| AgencyCode | AgencyName |
| 2NDNATURE | 2NDNATURE, LLC |
| 4MARBLES | 4Marbles, Inc. |
| ABL | A & B Laboratories |
| ALWAL | A & L Western Agricultural Laboratories, Inc. |
| A1ANAL | A-1 Analytical Labs, Salinas |
| CIWQS 553 | AAF-McQuay, Inc |
| ABALONE | Abalone Coast Analytical |
| ACCULAB | Acculab Environmental Services |
| Acterra | Acterra |
| ACUREX | Acurex Analytical Chemistry Lab |
| ADH | ADH Environmental |
| ATL | Advanced Technology Laboratories |
| AD_SCI | Adventure Scientists |
| AECOM | AECOM |
| AECOM-Oakland | AECOM Oakland Office |
| AECOM-Sacramento | AECOM Sacramento Office |
| CIWQS 854 | Aerojet General Corp |
| AEROJET | Aerojet TechSystems |
| Not Recorded | Agency Not Recorded |
| AHC | Agoura Hills City |
| AGTECH | Agricultural Technology Services Lab |
| APPL | Agriculture & Priority Pollutants Laboratories, Inc |
| ALBL | Air Liquide Balazs Laboratories |
| AlamedaCounty | Alameda County |
| ACFCWCD | Alameda County Flood Control & Water Conservation District |
| ACPWA | Alameda County Public Works Agency |
| ACWD | Alameda County Water District |
| ACCWP | Alameda Countywide Clean Water Program |
| Albany | Albany City Dept Public Works |
| Algalita | Algalita |
| AWMA | Aliso Water Management Authority |
| APP | All Positives Possible |
| AlphaAnalytical_MA | Alpha Analytical - Mansfield, MA |
| ALPHA_San Diego | Alpha Analytical Laboratories Inc., San Diego |
| ALPHA_Ukiah | Alpha Analytical Laboratories Inc., Ukiah |
| ALPHA | Alpha Analytical, Inc. |
| AWG | Alpine Watershed Group |
| ALS | ALS Laboratory Group |
| ALTA | Alta Environmental |
| CIWQS 1406 | Alturas City |
| AmadorCounty | Amador County |
| AMEC | AMEC Environment & Infrastructure |
| AMERANAL | American Analytical Lab |
| CIWQS 1520 | AMERICAN CANYON CITY |
| AEMC | American Environmental Management Corporation |
| AETL | American Environmental Testing Laboratories |
| AETL_RC | American Environmental Testing Laboratory, Inc., Rancho Cordova |
| ARC | American River Conservancy |
| AR | American Rivers |
| AMERWW | American Water Works, Bellville |
| CIWQS 3211 | Ameripride Services Inc |
| AMTECH | Amtech Laboratories |
| ANACON | ANACON, Inc. |
| ACWDL | Anaheim City Water Quality Laboratory |
| ANARES | Analytical Resources, Inc. |
| AS | Analytical Sciences, LLC |
| ANALTECH | Analytical Technologies, Inc. Lab |
| ANAMETRIX | Anametrix |
| ANATEC | Anatec Labs, Inc. |
| AnchorQEA | Anchor QEA |
| CIWQS 1728 | Anderson City |
| CIWQS 1797 | Angels City |
| ADSL | Anlab-Dewante and Stowell Lab |
| AVEK | Antelope Valley - East Kern Water Agency |
| AWTP | Antioch Water Treatment Plant |
| APGL | AP Genomic Labs Inc. |
| AMS-CA | Applied Marine Sciences, Inc. California |
| AMSLabs | Applied Microbiological Services |
| APCL | Applied P & Ch Laboratories, Inc. |
| AREL | Applied Remediation Environmental Lab |
| ARS | Applied River Sciences |
| AQUALAB | AquaLab |
| AquaSci | AquaScience |
| AA | Aquatic Analysts |
| ABCL | Aquatic Bioassay and Consulting Laboratories, Inc. |
| ABL_Chico | Aquatic Bioassessment Lab - Chico |
| DFW-ABL | Aquatic Bioassessment Lab - DFW |
| ABA | Aquatic Biology Associates, Inc. |
| AET | Aquatic EcoTechnologies, LLC |
| ARI | Aquatic Research, Inc. |
| DFW-ATL | Aquatic Toxicology Laboratory |
| CIWQS 1988 | Arcata City |
| ACWL | Arcata City Water Laboratory |
| ALA | Arrowhead Lake Association |
| ARROWHEAD | Arrowhead Puritas |
| AGCity | Arroyo Grande City |
| ASBESTOSTEM | Asbestos TEM Laboratories, Inc. |
| AssocLabs | Associated Laboratories |
| AL | Assoicated Laboratories |
| AEHL | Atkins Environmental Help Labs |
| CIWQS 2372 | Atwater City |
| CIWQS 2383 | Auburn City |
| CIWQS 3672 | Avalon City |
| CIWQS 2475 | Avila Beach CSD |
| AXYS | AXYS Analytical Services Ltd. |
| BBL | B and B Laboratories, Inc. |
| Babcock | Babcock Laboratories |
| Babcock_ElCentro | Babcock Laboratories, El Centro |
| Bachand | Bachand & Associates |
| CIWQS 40631 | BAE Systems San Diego Ship Repair Inc |
| Balance | Balance Hydrologics, Inc. |
| BARRINGER | Barringer Laboratories, Inc. |
| BAL | Basic Laboratory, Inc. |
| BASMAA_RMC | BASMAA Regional Monitoring Coalition |
| Battelle-MA | Battelle Marine Sciences Laboratory - MA |
| Battelle-WA | Battelle Marine Sciences Laboratory - WA |
| BCA | Battle Creek Alliance |
| BCWC | Battle Creek Watershed Conservancy |
| BACWA | Bay Area Clean Water Agencies |
| BADA | Bay Area Dischargers' Association - Local Effects Monitoring |
| BAMSC_RMC | Bay Area Municipal Stormwater Collaborative Regional Monitoring Coalition |
| BART | Bay Area Rapid Transit District |
| BCL | BC Laboratories, Inc. |
| CIWQS 4251 | Bear Valley CMSD |
| CIWQS 4256 | Bear Valley Water District (Bear Valley, CA) |
| CIWQS 445907 | Beaumont City |
| CIWQS 4343 | Bell Carter Olive Company Inc |
| CIWQS 4357 | Bella Vista Water District |
| BendGX | Bend Genetics LLC |
| CIWQS 4406 | Benicia City |
| BCWTPL | Benicia City Wastewater Treatment Plant Laboratory, Lake Herman |
| CIWQS 4484 | Berry Petroleum Company |
| BBMWD | Big Bear Municipal Water District |
| BVB_Pomo | Big Valley Band of Pomo Indians |
| BAS | BioAssessment Services |
| BTRL | Biological Testing & Research Laboratory |
| BiovirLab | Biovir Laboratories |
| BOLSA | Bolsa Analytical Laboratory |
| BRANCIFORTE | Branciforte Laboratories, Watsonville |
| BSKL | Braun, Skaggs and Kevorkian Lab |
| CIWQS 5169 | Brawley City |
| BRL | Brelje and Race Laboratories, Inc. |
| CIWQS 148431 | Brentwood City |
| BA | Brooks Applied Labs |
| BR | Brooks Rand Labs |
| BRWNCALD | Brown and Caldwell |
| BrCaL-Emeryville | Brown and Caldwell Lab, Emeryville |
| BrCaL-Pasadena | Brown and Caldwell Lab, Pasadena |
| BrCaL | Brown and Caldwell Laboratories |
| BBWTPL | Bryte Bend Water Treatment Plant Laboratory |
| BSA_Env | BSA Environmental Servises, Inc. |
| BSK | BSK Analytical Laboratory |
| BSK-Fresno | BSK Associates Fresno |
| BSK-RanchoCordova | BSK Associates Rancho Cordova |
| BVC | Buena Vista Coalition |
| BVWSD | Buena Vista Water Storage District |
| CIWQS 6656 | Burbank City DPW |
| BLM | Bureau of Land Management |
| BureauVeritas_Miss | Bureau Veritas Laboratories, Mississauga |
| BCWTP | Burlingame City Wastewater Treatment Plant |
| CIWQS 5597 | Burney Forest PWR/Shasta Green |
| ButteCounty | Butte County |
| BCPHD | Butte County Public Health Department |
| CLTECH | C.L. Technology, Inc. |
| CDSH-Napa | CA Department of State Hospitals-Napa |
| DWR-MWQI | CA Department of Water Resources - Municipal Water Quality Investigations |
| CIWQS 6913 | CA Dept of Corrections |
| CIWQS 6912 | CA Dept of Corrections Imperial |
| CIWQS 6904 | Ca Dept of Corrections San Luis Obispo |
| CIWQS 6896 | CA Dept of Fish & Game Fresno |
| CIWQS 6940 | Ca Dept of Fish & Game Independence |
| CIWQS 6930 | Ca Dept of Fish & Game Nimbus |
| CIWQS 6934 | Ca Dept of Fish & Wildlife Hornbrook |
| CIWQS 6927 | Ca Dept of Fish & Wildlife Redding |
| CDFA_Berkeley | CA Dept of Food and Agriculture Lab, Berkeley |
| CDHS_Berkeley | CA Dept of Health Services Lab, Berkeley |
| CDHS_LosAngeles | CA Dept of Health Services Lab, Los Angeles |
| CIWQS 6995 | Ca Dept of Parks & Rec Sacramento Headquaters |
| CIWQS 7123 | Ca Dept of Parks & Rec Tahoma |
| CALTRANSD1 | CA Dept of Transportation District 1, Eureka |
| CALTRANSD2 | CA Dept of Transportation District 2, Redding |
| CIWQS 7046 | Ca Dept of Water Resources Pearblossom |
| CASG-MLML | CA Sea Grant at Moss Landing Marine Laboratories |
| CASG-RRSSMP | CA Sea Grant Russian River Salmon and Steelhead Monitoring Program |
| CSUSD-WIRL_SWL | CA State University San Diego - Water Innovation Research Laboratory (WIRL) & Safe WaTER Research Lab (SWL) |
| CUSA_TST | CA Urban Streams Alliance-The Stream Team |
| CIWQS 7164 | Cabrillo Power I LLC |
| Cabrillo | Cabrillo Power I, LLC |
| CalabasasCity | Calabasas City |
| CIWQS 7274 | Calaveras Cnty Water District |
| CIWQS 7281 | Calaveras Trout Farm, Inc |
| CIWQS 8661 | Calexico City |
| CAD_TWG | California Algae and Diatom Taxonomic Working Group |
| CAWC | California American Water Company |
| CAWC-Monterey | California American Water Company Lab, Monterey |
| CALANAL | California Analytical Lab |
| CCC | California Coastal Commission |
| CDFW-R4 | California Department of Fish and Wildlife, Central Region 4 |
| CDFW-R1 | California Department of Fish and Wildlife, Northern Region 1 |
| CDFA | California Department of Food and Agriculture, Center for Analytical Chemistry |
| CADeptParksGFD | California Department of Parks and Recreation - Gold Fields District |
| DPR | California Department of Pesticide Regulation |
| CDPH | California Department of Public Health |
| Caltrans | California Department of Transportation |
| DWR-ND | California Department of Water Resources, Northern District |
| CLS | California Laboratories Services |
| CalPoly_SLO | California Polytechnic State University San Luis Obispo |
| CalPoly_HSU | California Polytechnic State University, Humboldt |
| CRC | California Rice Commission |
| CA_SCC | California State Coastal Conservancy |
| CSP-MC | California State Park Malibu Creek |
| CSP-Angeles | California State Parks Angeles District |
| CSUS | California State University at Sacramento |
| CSUCI | California State University Channel Islands |
| CSULB | California State University Long Beach |
| CSULB-IIRMES | California State University Long Beach Institute for Integrated Research in Materials, Environments, and Society |
| CSULB-SEAL | California State University Long Beach Stream Ecology and Assessment Laboratory |
| CSUMB | California State University Monterey Bay |
| CSUMB-WEE | California State University Monterey Bay Watershed Environment and Ecology Lab |
| CSUSB | California State University San Bernardino |
| CSUSD-Biology | California State University, San Diego - Department of Biology |
| CSUSM | California State University, San Marcos |
| CSUStan-CL | California State University, Stanislaus - Cover Lab |
| CTC | California Tahoe Conservancy |
| CalTrout | California Trout |
| CALWATLAB | California Water Labs |
| CALWATER | California Water Service Company Lab |
| CIWQS 7483 | CALIPATRIA CITY |
| CIWQS 7485 | Calistoga City |
| CIWQS 7514 | CALMAT COMPANY |
| CALSCI | CalScience Laboratories |
| CALTEST | CalTest Analytical Laboratory |
| CIWQS 10191 | Camarillo Sanitary District |
| CAMSD | Camarillo Sanitation District |
| CAMPBELL | Campbell Soup Company Central Environmental Lab |
| CAMROSA | Camrosa Water District Laboratory |
| CANONIE | Canonie Environmental Services Lab |
| CAPCO | Capco Analytical Services, Inc. |
| CapeFear | Cape Fear Analytical |
| Cardno | Cardno |
| CarlsbadCity | Carlsbad City |
| CASC_Eng | CASC Engineering |
| CMWD | Casitas Municipal Water District |
| CATE | Cate School |
| CWD | Cawelo Water District |
| CDMS | CDM Smith |
| CEIMIC | CEIMIC Corporation |
| CELA | CEL Analytical, Inc |
| CCAMP | Central Coast Ambient Monitoring Program |
| CCAL | Central Coast Analytical Lab, Santa Barbara |
| CCSE | Central Coast Salmon Enhancement |
| CCWC | Central Coast Water Conservancy (CCWC) |
| CCWQP | Central Coast Water Quality Preservation, Inc. |
| CCWG-MLML | Central Coast Wetlands Group at Moss Landing Marine Labs |
| CCCSD | Central Contra Costa Sanitary District |
| CSERC | Central Sierra Environmental Resource Center |
| CERCO | Cerco Analytical, Inc. |
| CERES | Ceres Analytical Laboratory |
| CERT | Certified Testing |
| CH2MHILL | CH2M HILL |
| CINMS | Channel Islands National Marine Sanctuary |
| CINC | Channel Islands Neighborhood Council |
| CHEMANAL | Chemanal |
| CHEMWEST | Chemwest Analytical Laboratories, Inc. |
| CBL | Chesapeake Biological Laboratories |
| CPCC | Chevron Phillips Chemical Company |
| CIWQS 481638 | CHEVRON USA INC |
| CUPC | Chevron USA Products Company |
| CIWQS 8451 | Chico City |
| CHROMALAB | Chromalab, Inc. |
| CIBA-GEIGY | Ciba-Geigy |
| CCSF | City and County of San Francisco |
| CCSF-MWQDL | City and County of San Francisco - Millbrae WQ Division Lab |
| CCSF-OBL | City and County of San Francisco - Oceanside Biology Lab |
| CCSF-ORG | City and County of San Francisco - Organics Lab |
| CCSF-SWQDL | City and County of San Francisco - Southeast WQ Division Lab |
| CCRML | City of Carmel-By-The-Sea |
| CC | City of Chico |
| CCV | City of Chula Vista |
| CE | City of Encinitas |
| CES | City of Escondido |
| CLN | City of Laguna Niguel |
| CLBHHS | City of Long Beach Health and Human Services |
| LBCPW | City of Long Beach Public Works |
| LABOSWPD | City of Los Angeles, Bureau of Sanitation, Watershed Protection |
| LAC_DPW_BSS | City of Los Angeles, Department of Public Works, Bureau of Street Services |
| CLAEMD | City of Los Angeles, Environmental Monitoring Division |
| OS | City of Oceanside |
| COXLSP | City of Oxnard Laboratory Services Program |
| PRC | City of Paso Robles |
| CPL | City of Porterville Laboratory |
| CSD | City of San Diego |
| EMTS | City of San Diego Environmental Monitoring & Technical Services Laboratory |
| CSD_TSW | City of San Diego Transportation & Storm Water Department |
| CSJ-ESD-WSP-SM | City of San Jose - Environmental Services Department - Watershed Protection Division - Stormwater Management |
| CSJ | City of San Jose Water Pollution Control Plant |
| CSC | City of Santa Cruz |
| CSM | City of Santa Monica |
| CSR | City of Santa Rosa |
| CS | City of Santee |
| COSVWWTPL | City of Simi Valley WWTP laboratory |
| CTDPW | City of Torrance Department of Public Works |
| Vallejo | City of Vallejo |
| CV | City of Ventura |
| WC | City of Watsonville |
| WC_Lab | City of Watsonville Lab |
| CYC | City of Yuba City Water/Wastewater Laboratory |
| CWE | Civil, Water, Environmental |
| CKY | CKY Inc. Analytical Laboratories |
| CKY_PT | CKY Inc. Analytical Laboratories, Pleasanton and Torrence |
| CLARKSON | Clarkson Laboratory and Supply Inc. |
| CLAYTON | Clayton Environmental |
| CIWQS 8809 | Clear Creek CSD |
| CLERC | Clear Lake Environmental Research Center |
| CLSB | Clinical Laboratory of San Bernardino |
| CIWQS 8865 | Clovis City |
| CMANAL | CM Analytical, Inc. |
| CIWQS 8901 | Coachella SD |
| CVILC | Coachella Valley Irrigated Lands Coalition |
| CVWD | Coachella Valley Water District |
| CIWQS 8902 | Coachella Valley WD |
| CURES | Coalition for Urban/Rural Environmental Stewardship |
| CCAS | Coast to Coast Analytical Specialists, Inc. |
| CCR | Coastal Conservation and Research |
| CSLRCD | Coastal San Luis Resource Conservation District |
| CWC | Coastal Watershed Council |
| CIWQS 9009 | Colfax City |
| CIWQS 9014 | College of the Redwoods |
| CIWQS 9021 | Collins Pine Company Chester |
| CAS | Columbia Analytical Services |
| CIWQS 9073 | Colusa City |
| ColusaCounty | Colusa County |
| Condor | Condor Earth Technologies |
| CFR | Conservation Farms and Ranches, Inc. |
| CCCWP | Contra Costa Clean Water Program |
| CCRCD | Contra Costa Resource Conservation District |
| CCWDL | Contra Costa Water District Laboratory, Concord |
| CFEP | Controls for Environmental Pollution |
| CONVERSE | Converse Envirolab, Inc. |
| COOK | Cook Research Lab |
| CORE | Core Laboratories, Inc. |
| CIWQS 9406 | Corning City |
| CIWQS 524675 | Corona City DWP |
| CDMWTPL | Corona Del Mar Water Treatment Plant Laboratory |
| Ccity | Coronado City |
| CNR | Coronado Naval Reserve |
| CWH | Council for Watershed Health |
| DN | County of Del Norte Health and Human Care |
| CMaEHS | County of Marin Environmental Health Services |
| CMeEHS | County of Mendocino Environmental Health |
| MY | County of Monterey Department of Health Division of Environmental Health |
| CSDDEH | County of San Diego Department of Environmental Health |
| CSHSEHD | County of Sonoma Health Services Environmental Health Division |
| Cranmer | Cranmer Engineering Inc |
| CEI | Cranmer Enginering and Anaytical Laboratory |
| CEL | Creek Environmental Laboratories, Inc. |
| CIWQS 9674 | Crescent City |
| CCWQL | Crescent City Water Quality Laboratory |
| Cressey | Cressey and Associates |
| CRGML | CRG Marine Laboratories, Inc. |
| CIWQS 9704 | Crockett Cogeneration |
| CROSBY | Crosby Laboratories, Inc. |
| CIWQS 9780 | Crystal Creek Aggregate Inc |
| CSUF | CSU Fresno, Lab |
| CulverCity | Culver City |
| CATL | Curtis and Tompkins, Ltd |
| DPC | Dana Point City |
| DCE | Dancing Coyote Environmental |
| DataChem | DataChem Laboratories, Inc |
| DAVI | Davi Laboratories Environmental Associates |
| CIWQS 12331 | Davis City |
| DEAN | Dean Laboratories, Norco |
| LABQA | default setting for lab generated QA samples |
| DEL | Del Mar Analytical |
| DELMAR | Del Mar Analytical, Colton |
| DelMarCity | Del Mar City |
| DelNorteCounty | Del Norte County |
| DDLV | Dellavalle Laboratory, Inc. |
| CIWQS 12599 | Delta Diablo Sanitation District |
| DeltaEnv | Delta Environmental Lab |
| DELTAKEEPER | Deltakeeper |
| DEL-TECH | Del-Tech Geotechnical Support Services |
| DFW | Department of Fish and Wildlife |
| DFW-BDD | Department of Fish and Wildlife - Bay Delta Division |
| DFW-Belden | Department of Fish and Wildlife Belden Office |
| DFW-LOSALA | Department of Fish and Wildlife Los Alamitos Office |
| DFW-Portola | Department of Fish and Wildlife Portola Office |
| DFW-RED | Department of Fish and Wildlife Redding Office |
| DFW-SanDiego | Department of Fish and Wildlife San Diego Office |
| DFW-Weave | Department of Fish and Wildlife Weaverville Office |
| DFW-WestSac | Department of Fish and Wildlife West Sacramento Office |
| DFW-Yreka | Department of Fish and Wildlife Yreka Office |
| DFW-OSPR | Department of Fish and Wildlife-OSPR |
| DWR | Department of Water Resources - Sacramento Office |
| DWR-BRYTE | Department of Water Resources Bryte Analytical Laboratory |
| DWR-CASTAIC | Department of Water Resources Castaic Analytical Laboratory |
| DWR-SCRO | Department of Water Resources, South Central Region Office |
| CIWQS 12837 | Dicalite Minerals Corp |
| Dionex | Dionex |
| D-Max | D-Max Engineering, Inc |
| CIWQS 13111 | Donner Summit Public Utilities District |
| CIWQS 13129 | Dos Cuadras Offshore Res. LLC |
| DOWAGRO | Dow Agrosciences Analytical Laboratory, Indianapolis |
| DOWCHEM | Dow Chemical USA, Western Division, Pittsburg |
| Risebrough | Dr. Robert Risebrough's laboratory at the UCB Richmond Field Station |
| DCC | Dry Creek Conservancy |
| DU | Ducks Unlimited |
| DUDEK_Encinitas | Dudek Environmental and Engineering, Encinitas |
| Duke | Duke University |
| CIWQS 13316 | Dunsmuir City |
| DYNAMIC | Dynamic Consultants, Inc. |
| E&S | E&S Environmental Chemistry, Inc. |
| ESJWQC | E. San Joaquin Water Quality Coalition |
| EagleLkGuard | Eagle Lake Guardians |
| EALCORP | EAL Corporation Laboratory |
| EBB | East Bay Beautiful |
| EBMUD | East Bay Municipal Utility District |
| CIWQS 14380 | EAST BAY MUNICIPAL UTILITY DISTRICT (Water Plants) |
| CIWQS 14384 | East Bay Reg Park Dist, Union SD & EBDA |
| EBRPD | East Bay Regional Park District |
| ECCCHC | East Contra Costa County Habitat Conservancy |
| CIWQS 309528 | Eastern Municipal Water District |
| CIWQS 497348 | Eco Resources Inc |
| EcoAnalysts | EcoAnalysts, Inc |
| ESC | Ecological System Corporation (DOMINGUES WS) |
| ECORP-Rocklin | ECORP Consulting, Inc. Rocklin |
| Edge_Corvallis | Edge Analytical Laboratories, Corvallis Laboratory |
| CEC | El Cajon City |
| CIWQS 11077 | El Centro City |
| ElDoradoCounty | El Dorado County |
| CIWQS 14606 | El Dorado Irrigation District |
| EID | El Dorado Irrigation District Monitoring |
| EDTU | El Dorado Trout Unlimited |
| eli | elimnology, Inc. |
| EGCDPW | Elk Grove City Dept of Public Works |
| EKR | Elk Valley Rancheria |
| ESNERR | Elkhorn Slough National Estuarine Research Reserve NOAA |
| EMAX | EMAX Laboratories, Inc. |
| EMCON | Emcon Associates |
| EMSL | EMSL Analytical, Inc. |
| EN | Encina |
| EWA | Encina Wastewater Authority |
| ENGINSCI | Engineering Science |
| ENSECO-CAL | ENSECO-CAL, Orange County |
| ENSECO-CRL | ENSECO-CRL, Ventura |
| ENTHALPY | Enthalpy Analytical, Inc. |
| ENTHALPY_Berkeley | Enthalpy Analytical, Inc., Berkeley |
| ENTHALPY_EDH | Enthalpy Analytical, Inc., EDH |
| ENTHALPY_SanDiego | Enthalpy Analytical, Inc., San Diego |
| ENTHALPY_Wilmington | Enthalpy Analytical, Inc., Wilmington NC |
| ENVIRO-CHEM | Enviro-Chem Laboratories, Inc. |
| EnviroMatrix | EnviroMatrix Analytical, Inc. |
| EELI | Environmental Engineering Lab, Inc., San Diego |
| EHL | Environmental Health Labs |
| ELNI | Environmental Laboratory Network, Inc. |
| EMA | Environmental Micro Analysis |
| EMASI | Environmental Monitoring and Services, Inc., Lab |
| EPARD | Environmental Protection Agency office of Research and Development |
| UCD-EQL | Environmental Quality Laboratory |
| ERGI | Environmental Research Group, Inc., Lab |
| ETS | Environmental Technical Service |
| EWG | Environmental Working Group |
| EOA | EOA, Inc. |
| EPA-R9 | EPA Region 9 Lab |
| CIWQS 14960 | Escondido City |
| ECWQL | Escondido City Water Quality Laboratory |
| EUREKA | Eureka Laboratories, Inc. |
| EuroFins | Eurofins |
| Eurofins_Tustin | Eurofins Built Environment Testing - Tustin |
| EuroCal_Irvine | Eurofins Calscience Irvine |
| Eurofins_Pomona | Eurofins Drinking Water Testing - Pomona |
| EEA | Eurofins Eaton Analytical, Inc. |
| EFGS | Eurofins Frontier Global Sciences |
| EXADMS | Exa Data & Mapping Services |
| ExcelChem | Excelchem Environmental Labs |
| CIWQS 29010 | ExxonMobil Oil Corporation Torrance |
| CIWQS 15842 | Fairfield Suisun Sewer District |
| FSURMP | Fairfield Suisun Urban Runoff Management Program |
| FARWEST | Far West Laboratories, Riverbank |
| FRCRM | Feather River Coordinated Resource Management Group |
| CIWQS 16050 | Ferndale City |
| FFIC | Firemans Fund Insurance Companies, Environmental Lab |
| FISHBIO | FISHBIO |
| FFC | Fishery Foundation of California |
| FMC | FMC Lab |
| Fordham | Fordham University |
| FASI | Forensic Analytical Specialties, Inc. |
| CIWQS 16413 | Forestville Water District |
| FBC | Fort Bragg City |
| FBML | Fort Bragg Municipal Laboratory |
| CIWQS 16475 | Fortuna City |
| CIWQS 16691 | Fresno City |
| FresnoCounty | Fresno County |
| FCPHL | Fresno County Public Health Laboratory |
| FoAR | Friends of Auburn Ravine |
| FoCC | Friends of Concord Creeks |
| FDC | Friends of Deer Creek |
| FSRC | Friends of San Ramon Creek |
| FOSC | Friends of Sausal Creek |
| Frog | Frog Environmental |
| FAL | Frontier Analytical Laboratory |
| FGS | Frontier Geosciences, Inc. |
| FGLE | Fruit Growers Lab (FGL Environmental) |
| FGLE-Stockton | Fruit Growers Lab (FGL Environmental) Stockton |
| CIWQS 17625 | Galt City |
| GANDA | Garcia and Associates |
| GCAL | Garratt-Callahan Analytical Laboratory |
| GWMA | Gateway Water Management Authority |
| GEI | GEI Consultants, Inc. |
| GEI-Carlsbad | GEI Consultants, Inc. - Carlsbad |
| GEL | GEL Laboratories |
| CIWQS 31242 | General Dynamics National Steel & Shipbuilding Co (NASSCO) |
| CIWQS 17824 | General Electric Co |
| GEOANAL | Geoanalytical Laboratories, Inc. |
| GERG | Geochemical and Environmental Research Group |
| Geocon_RC | Geocon Consultants, Inc. - Rancho Cordova Office |
| GEOMONITOR | Geo-Monitor, Inc. |
| GMU-AEL | George Mason University - Algal Ecology Lab |
| GCSU | Georgia College and State University |
| GC | Geosyntec Consultants |
| Geosyntec_Sac | Geosyntec Consultants, Sacramento |
| GlennCounty | Glenn County |
| GGC-Canoga | Global Geochemical Corporation, Canoga Park |
| GRRCD | Gold Ridge RDC |
| GGNRA | Golden Gate National Recreation Area |
| GOLDPL | Golden Pacific Laboratories |
| Golder | Golder |
| CIWQS 18325 | GOLETA SD |
| GLC | Goose Lake Coalition |
| GPL | GPL Laboratories Lllp |
| GMA | Graham Matthews and Associates |
| CIWQS 19392 | Granite Rock Co |
| CIWQS 18512 | Grass Valley City |
| GBP | Grassland Bypass Project |
| GrassrootsEcology | Grassroots Ecology |
| GBOC | Grassy Bar Oyster Company |
| GHWRMC-1415 | Greater Harbor Waters Regional Monitoring Coalition 2014/15 |
| GHWRMC-1516 | Greater Harbor Waters Regional Monitoring Coalition 2015/16 |
| GHWRMC-1617 | Greater Harbor Waters Regional Monitoring Coalition 2016/17 |
| GHWRMC-1718 | Greater Harbor Waters Regional Monitoring Coalition 2017/18 |
| GHWRMC-1819 | Greater Harbor Waters Regional Monitoring Coalition 2018/19 |
| GHWRMC-1920 | Greater Harbor Waters Regional Monitoring Coalition 2019/20 |
| GVLR | Green Valley Lake Recreation |
| GWL | Green Water Laboratories |
| CIWQS 18681 | Grizzly Lake Resort Imp Dist |
| GTEL | GTEL Environmental Laboratories, Inc. |
| HGPRATT | H.G. Pratt Company |
| HPUL | Habematolel Pomo of Upper Lake |
| CIWQS 523382 | Hargis & Associates, Inc. |
| HAWKSLEY | Hawksley Laboratory |
| HCWPCFL | Hayward City Water Pollution Control Facility Laboratory |
| HML | Hazardous Materials Laboratory |
| HDR-SAC | HDR-Sacramento |
| CIWQS 20025 | Healdsburg City |
| HDCSMEH | Health Department County of San Mateo Environmental Health |
| CIWQS 20060 | Heber PUD |
| HWDLWTP | Helix Water District R.M. Levy Water Treatment Plant |
| HENRICI | Henrici Water Laboratory, Quincy |
| CIWQS 20185 | HERITAGE RANCH CSD |
| HPEL | Hewlett-Packard Environmental Lab |
| HSWL | High Sierra Water Laboratory |
| CIWQS 20513 | Holtville City |
| CIWQS 21348 | Honeywell International Inc. |
| Hoopa-Tribe | Hoopa Tribe |
| HBPIT | Hopland Band Of Pomo Indians Tribal EPA |
| HORNKOHL | Hornkohl Laboratories, Inc. |
| HI | Houston Industries, Inc. |
| HDL-SanJose | Hull Development Lab, Inc., San Jose |
| HumboldtCounty | Humboldt County |
| HCDEH | Humboldt County Division of Environmental Health |
| HCHHSDD | Humboldt County Health and Human Services Department Division of Environmental Health |
| HSU-SL | Humboldt State University Department of Biological Sciences Shaunghnessy Lab |
| HW | Humboldt Waterkeeper |
| HFI | HydroFocus, Inc. |
| Hydrozoology | Hydrozoology |
| ICF-Los Angeles | ICF Los Angeles |
| ICF-Sacramento | ICF Sacramento |
| ICF-San Diego | ICF San Diego |
| ICRI | I-Chem Research, Inc. |
| IEH | IEH Aquatic Research |
| IBCity | Imperial Beach City |
| CIWQS 21588 | Imperial CCD |
| CIWQS 21610 | Imperial City |
| ImperialCounty | Imperial County |
| CIWQS 21597 | Imperial ID |
| IID | Imperial Irrigation District |
| IVILC | Imperial Valley Irrigated Lands Coalition |
| CIWQS 21650 | Indian Springs School District |
| IVCSD | Indian Valley Community Services District |
| IEc | Industrial Economics, Inc |
| IMTL | Industrial Marine Testing Lab, Inc. |
| CIWQS 147335 | Inland Empire Utilities Agency |
| ICARE | Institute for Conservation, Advocacy, Research, and Education (ICARE) |
| Integral | Integral Consulting Inc. |
| IERS | Integrated Environmental Restoration Services |
| ITIS | Integrated Taxonomic Information System |
| InyoCounty | Inyo County |
| ICEHD | Inyo County Environmental Health Department |
| ICEHS | Inyo County Environmental Health Services Water Lab |
| CIWQS 21868 | Ironhouse Sanitary District |
| CIWQS 499770 | Irvine Ranch Water District |
| CIWQS 21509 | I'SOT Inc |
| ITCORP | IT Corporation Lab |
| CIWQS 22475 | J.F. Enterprises |
| CIWQS 22556 | Jackson City |
| JACOBS | Jacobs Lab |
| JMMCE | James M. Montgomery, Consulting Engineers, Inc., Lab |
| JPL | Jet Propulsion Laboratory |
| CIWQS 358762 | JF Shea Company Inc |
| JKBS | JK BioScience |
| JLAS | JL Analytical Services, Inc. |
| JLHA | John L Hunter and Associates |
| JLC | Jon Lee Consulting |
| JLLCV | June Lake Loop Citizen Volunteers |
| Karuk-Tribe | Karuk Tribe |
| KBWQA | Kaweah Basin Water Quality Association |
| Kaweah SW | Kaweah River Sub-Watershed |
| KTB | Keep Taho Blue |
| KJC | Kennedy/Jenks/Chilton |
| KernCounty | Kern County |
| KCDPH | Kern County Dept of Public Health |
| KCWA-WQL | Kern County Water Agency, Water Quality Laboratory |
| Kern SW | Kern River Sub-Watershed |
| KERNRWCA | Kern River Watershed Coalition Authority |
| KIFF | KIFF Analytical |
| CIWQS 24287 | Kinder Morgan Energy Partners LP |
| KCEL | King County Environmental Laboratory |
| KingsCounty | Kings County |
| KRCD | Kings River Conservation District |
| Kings SW | Kings River Sub-Watershed |
| KINGSRWCA | Kings River Watershed Coalition Authority |
| KEI | Kinnetic Environmental, Inc. |
| Kinnetic | Kinnetic Laboratories, Inc. |
| KLI-Santa Cruz | Kinnetic Laboratories, Inc. Santa Cruz Office |
| KBMP | Klamath Basin Monitoring Program |
| KBRT | Klamath Basin Rangeland Trust |
| Klamath-Tribes | Klamath Tribes |
| KTNRD | Klamath Tribes Natural Resource Department |
| KWP | Klamath Watershed Partnership |
| Kleinfelder | Kleinfelder |
| CIWQS 24377 | Klondike California Mining Corp |
| KPI | KPrime, Inc. |
| LMCity | La Mesa City |
| LASAN | LA Sanitation and Environment |
| LDSRF | Laguna de Santa Rosa Foundation |
| LEL | Laguna Environmental Laboratory |
| LAKEARROWHEAD | Lake Arrowhead Community Services District |
| LakeCounty | Lake County |
| LCWRD | Lake County Water Resources Department |
| LEC | Lake Elsinor City |
| LESJWA | Lake Elsinore and San Jacinto Watershed Authority |
| LMI | Lake Merritt Institute |
| Laragen | Laragen Sequencing, Inc. |
| LWA | Larry Walker Associates |
| CIWQS 25562 | Las Gallinas Valley Sanitary District |
| LVMWD | Las Virgenes Muncipal Water District |
| CIWQS 26657 | Las Virgenes MWD |
| LassenCounty | Lassen County |
| LLNL | Lawrence Livermore National Laboratory |
| LTSLT | League to Save Lake Tahoe |
| LEERO | Lee & Ro Environmental Laboratories |
| LCCC | Lehigh Cement Co Cupertino |
| CIWQS 25746 | Lehigh Southwest Cement Co Redding |
| LGCity | Lemon Grove City |
| LFE | LFE Environmental Analysis Lab |
| CIWQS 25963 | Lincoln Center Env Remed Trust |
| CIWQS 25974 | Lincoln City |
| CIWQS 25978 | Linda Cnty Water District |
| CIWQS 26056 | Live Oak City |
| CIWQS 11100 | Lodi City |
| CIWQS 26133 | Loleta CSD |
| CIWQS 26142 | Lompoc City |
| LCWTP | Lompoc City Water Treatment Plant |
| LongBeachCity | Long Beach City |
| LBCSMD | Long Beach City Stormwater Management Division |
| LBCWTD | Long Beach City Water Treatment Department |
| CIWQS 27069 | Long Beach Generation LLC |
| CIWQS 25146 | Los Angeles City Bureau of Sanitation |
| LACityDWP | Los Angeles City Dept of Water and Power Environmental Lab |
| CIWQS 25175 | Los Angeles Cnty SD |
| LosAngelesCounty | Los Angeles County |
| LACDBH | Los Angeles County Department of Beaches and Harbors |
| DH | Los Angeles County Department of Health Services |
| LACDPR | Los Angeles County Department of Parks and Recreation |
| LACDPW | Los Angeles County Department of Power and Water |
| LACDPH | Los Angeles County Department of Public Health |
| LACDPW-WMD | Los Angeles County Department of Public Works |
| LACEH | Los Angeles County Environmental Health |
| LACETL | Los Angeles County Environmental Toxicology Laboratory |
| LACSD | Los Angeles County Sanitation Districts |
| LMU | Loyola Marymount University |
| LSCE | Luhdorff & Scalmanini, Consulting Engineers |
| LU_FL | LuminUltra, Florida |
| Lunkefer | Lunkefer |
| MACS | MACS Lab, Inc. |
| MaderaCounty | Madera County |
| CIWQS 44013 | Magic Mountain, LLC (Former Six Flags Theme Parks, Inc) |
| CIWQS 27641 | Malaga CWD |
| MalC | Malibu City |
| CIWQS 27706 | Manteca City |
| MAN_City | Manteca, City of |
| MarinCounty | Marin County |
| MCSTOPPP | Marin County Stormwater Pollution Prevention Program |
| MMWD | Marin Municipal Water District |
| MCWDL | Marina Coast Water District Laboratory |
| MCCP | Marine Corps Base Camp Pendleton |
| MMC | Marine Mammal Center |
| MMVM | Marine Microbiology and Vector Management |
| MPSL-DFW | Marine Pollution Studies Laboratory-DFW |
| MPSL-MLML | Marine Pollution Studies Laboratory-MLML |
| MARRESSPEC | Marine Research Specialists |
| MTS | Marine Taxonomic Services |
| MariposaCounty | Mariposa County |
| CIWQS 27814 | MARIPOSA PUD |
| MTH | Mark Twain Hospital |
| MCWTP | Martinez City Water Treatment Plant |
| MAL | Maxxam Analytics |
| MBC | MBC Aquatic Sciences |
| CIWQS 28203 | McCabe USD |
| MCA | McCampbell Analytical Inc. |
| MEI | McCord Environmental, Inc. |
| MSLI | McDonald-Stevens Lab Inc. |
| MESL | McKesson Environmental Service Lab |
| CIWQS 28265 | McKinleyville CSD |
| MHEEC | McLaren/Hart Environmental Engineering Corporation |
| MEC | MEC Analytical Systems |
| Medallion | Medallion Labs |
| MendocinoCounty | Mendocino County |
| CIWQS 28505 | Merced City |
| MCWWL | Merced City WasteWater Laboratory |
| MercedCounty | Merced County |
| MERID | Merced Irrigation District |
| CIWQS 28528 | Meridian Gold Company |
| MERKELINC | Merkel and Associates Inc |
| MWDSC | Metropolitan Water District of Southern California |
| MLJ-LLC | Michael L. Johnson, LLC |
| Michelson | Michelson Laboratories, Inc |
| Microbac-Arcata | Microbac Laboratories Arcata |
| MKGSA | Mid-Kaweah Groundwater Sustainability Agency |
| MIDWAY | Midway Laboratory Inc. |
| MOE | Mikhail Ogawa Engineering |
| CIWQS 28870 | Mining Remedial Recovery Co |
| MissionEnv | Mission Environmental |
| MISSION | Mission Laboratory, Gilroy |
| MLJEnvironmental | MLJ Environmental |
| CIWQS 29046 | Modesto City |
| MODCSP | Modesto City Stormwater Program |
| MCU | Modesto City Utilities |
| MCWQCL | Modesto City Water Quality Control Laboratory |
| MODID | Modesto Irrigation District |
| ModocCounty | Modoc County |
| CIWQS 29055 | Modoc Joint Unified School District |
| ModocRCD | Modoc Resource Conservation District |
| MONARCH | Monarch Laboratory Inc., Chico |
| MBAS | Monterey Bay Analytical Services |
| MBARI | Monterey Bay Aquarium Research Institute |
| MBARI-JL | Monterey Bay Aquarium Research Institute; Marine Chemistry Department Johnson Laboratory |
| MBNMS | Monterey Bay National Marine Sanctuary |
| MontereyCounty | Monterey County |
| MRWPCA | Monterey Regional Water Pollution Control Agency |
| MTA | Moore Twining Associates, Inc. |
| MBNEP | Morro Bay National Estuary Program |
| MBOC | Morro Bay Oyster Company |
| MORSE | Morse Laboratories, Sacramento |
| MLML_Oakden | Moss Landing Marine Laboratories - Oakden Lab |
| MLML-Coale | Moss Landing Marine Laboratories Coale Lab |
| MLML-RDC | Moss Landing Marine Laboratories Regional Data Center |
| MLML-BL | Moss Landing Marine Laboratories-Benthic Lab |
| MLML-CO | Moss Landing Marine Laboratories-CO |
| MLML-GeoOc | Moss Landing Marine Laboratories-Geological Oceanography |
| MLML-NutrientLab | Moss Landing Marine Laboratories-Nutrient Lab |
| MLML-TM | Moss Landing Marine Laboratories-Trace Metals Lab |
| CIWQS 29366 | Mountain House CSD |
| MRCA | Mountains Recreation and Conservation Authority |
| MRT | Mountains Restoration Trust |
| CIWQS 29441 | Mt Lassen Trout Farms Inc |
| CIWQS 29446 | Mt Shasta City |
| CIWQS 29450 | MT. VIEW SANITARY DISTRICT |
| MULTITECH | Multi-Tech, Inc., Lab |
| MC | Murrieta City |
| MWH | MWH Laboratories |
| NAL | Nachtmann Analytical Laboratory, Davis |
| NapaCounty | Napa County |
| NAPARCD | Napa County Resource Conservation District |
| CIWQS 31164 | NAPA SANITATION DISTRICT |
| NAMC | National Aquatic Monitoring Center |
| NCCity | National City |
| NOAA | National Oceanic and Atmospheric Administration |
| NAUT | Nautilus Environmental |
| NIWC_Pacific | Naval Information Warfare Center Pacific |
| NELL | NEL Laboratories |
| NELSON | Nelson Lab |
| NWQAL | Nestle Waters Quality Assurance Laboratory |
| NETPACIFIC | Net Pacific, Inc. |
| CIWQS 31378 | Nevada City |
| NevadaCounty | Nevada County |
| CIWQS 31380 | Nevada CSD No 1 |
| NDEP | Nevada Division of Environmental Protection |
| NIDNAWTP | Nevada Irrigation District North Auburn Water Treatment Plant |
| NTCD | Nevada Tahoe Conservation District |
| CIWQS 31394 | NEW CENTURY BEVERAGE COMPANY |
| NewFields | NewFields |
| NL&FC | Newhall Land and Farming Company |
| CIWQS 400869 | Newhall Ranch Sanitation District |
| CIWQS 31531 | Niland SD |
| NOAACHHR | NOAA Center for Human Health Risk |
| NOAACOAST | NOAA Coastal Oceanographic Assessment Status and Trends |
| NBRWTP | North Bay Regional Water Treatment Plant |
| NCCWDL | North Coast County Water District Lab |
| NMWD | North Marin Water District |
| NSDCWMP | North San Diego County Watershed Monitoring Program |
| CIWQS 31673 | North San Mateo County Sanitation District |
| NSR | North State Resources, Inc. |
| NEC | Northcoast Environment Center |
| NECWA | Northeastern California Water Association |
| NAU | Northern Arizona University |
| NCPA | Northern California Power Agency |
| NCNRCD | Northern California-Nevada Resource Conservation District |
| NGEM | Northgate Environmental Management, Inc. |
| CIWQS 46428 | Northrop Grumman Systems Corporation |
| NorthStar | NorthStar Engineering |
| NV5_Long Beach | NV5 Long Beach Office |
| NV5_Oceanside | NV5 Oceanside Office |
| OID | Oakdale Irrigation District |
| OAMG | Ocean Acidification Monitoring Group |
| OCWUL | Oceanside City Water Utility Laboratory |
| OEC | Oilfield and Environmental Compliance |
| ORL | Oilwell Research Lab |
| CIWQS 33028 | Ojai Valley Sanitary District |
| CIWQS 32551 | Olivehurst PUD |
| OCWD | Orange City Water Department |
| OCA | Orange Coast Analytical, Inc. |
| OC | Orange County |
| OCEHD | Orange County Environmental Health Division |
| OCPHL | Orange County Public Health Lab |
| OCPW | Orange County Public Works |
| OCSD | Orange County Sanitation District |
| OCWR | Orange County Waste and Recycling |
| OCWDML | Orange County Water District Main Laboratory |
| ODEQ | Oregon Department of Environmental Quality |
| ODEQ-KFALLS | Oregon Department of Environmental Quality, Klamath Falls |
| OSU-Zoo | Oregon State University, Department of Zoology |
| OXN_PW | Oxnard City, Department of Public Works |
| PACE | Pace Analytical Service, Inc. |
| PACE_Camarillo | Pace Analytical Services, Inc., Camarillo |
| PAI | Pacific Analytical Inc. |
| PCAS | Pacific Coast Analytical Services |
| PER | Pacific Ecorisk |
| PEL | Pacific Environmental Laboratory |
| CIWQS 33523 | Pacific Gas & Electric Company Eureka |
| PGE-San Ramon | Pacific Gas and Electric San Ramon |
| PACRL | Pacific Ridgeline |
| CIWQS 33649 | Pacifica City |
| PacifiCorp | PacifiCorp |
| CIWQS 33676 | Pactiv Corp |
| CIWQS 33680 | Padre Dam Municipal Water District |
| CIWQS 33738 | Palo Alto City |
| PARWQCL | Palo Alto Regional Water Quality Control Laboratory |
| PVPWMG | Palos Verdes Peninsula Watershed Management Group |
| PDD | Panoche Drainage District |
| CIWQS 33785 | Paradise ID |
| USLT_CSL_RCD | Partnernship between Upper Salinas-Las Tablas and Coastal San Luis Resource Conservation Districts |
| PCWQL | Pasadena City Water Quality Laboratory |
| CIWQS 33896 | Paso Robles City |
| Pat-Chem | Pat-Chem Laboratories |
| PU | Pepperdine University |
| COP | Petaluma City Waste Water Treatment Facility |
| CIWQS 12244 | Peter M. Ormand |
| CIWQS 9217 | Phillips 66 (formerly ConocoPhillips) - SF Refinery |
| Phycotech | Phycotech, Inc. |
| PHYSIS | PHYSIS Environmental Laboratories, Inc. |
| PMWWFPL | Pittsburg Municipal Water Works Filtration Plant Laboratory |
| CIWQS 181411 | Placer Cnty Dept of Facility Services |
| PlacerCounty | Placer County |
| CIWQS 34521 | Placerville City |
| CIWQS 483625 | Plains West Coast Terminals, LLC |
| CIWQS 34528 | PLANADA CSD |
| PluCorp | Plumas Corporation |
| PNSSNS | PNSSNS Subwatershed Group |
| POLB | Port of Long Beach |
| POSD | Port of San Diego |
| PoS | Port of Stockton |
| CIWQS 34722 | Portola City |
| PowayCity | Poway City |
| PPCG | Provost & Pritchard Consulting Group |
| PTRL | PTRL West, Richmond |
| PTS | PTS Laboratories |
| PCWG | Putah Creek Watershed Group |
| QALSD | Quality Assurance Laboratory of San Diego |
| QWL | Quality Water Laboratory |
| QUANTERRA | Quanterra Lab |
| QVIR | Quartz Valley Indian Reservation |
| CIWQS 36414 | Quincy Community Services District |
| RFE_Rose | R&F Engineering, Roseville |
| RLC | Radian Lab Corporation |
| RDC | Radiation Detection Company |
| CIWQS 4573 | Ralph Beatty |
| Ramboll | Ramboll Environ |
| REBWCL | Ray E. Beam Water Consultant Lab |
| CIWQS 36963 | Red Bluff City |
| RedHills | Red Hills Environmental, LLC |
| CIWQS 37005 | Redding City |
| RCWD | Redlands City Wastewater Division |
| CIWQS 47658 | Regents of the University of California - UC Davis |
| RESIGHINI | Resighini Racheria |
| RCDMC | Resource Conservation District of Monterey County |
| RTD | Restore the Delta |
| Rhithron | Rhithron Associates, Inc. |
| RPAGCO | Rhone-Poulenc Ag Company |
| CIWQS 37426 | Rio Alto WD |
| CIWQS 37430 | Rio Dell City |
| CIWQS 37437 | Rio Vista City |
| CIWQS 37474 | River Highlands CSD |
| CIWQS 502400 | Riverside City |
| RiversideCounty | Riverside County |
| RCFC | Riverside County Flood Control |
| RCSA51 | Riverside County Service Area 51 |
| RWQCP | Riverside Water Quality Control Plant |
| RCRCD | Riverside-Corona Resource Conservation District |
| RJLG | RJ Lee Group, Inc. |
| RBI | Robertson-Bryan, Inc. |
| CIWQS 37731 | Rockwell Automation |
| RIRD | Rockwell International, Rocketdyne Division |
| CIWQS 11142 | Roseville City |
| RCWWCL | Roseville City WasteWater Control Laboratory |
| RVIT | Round Valley Indian Tribes |
| RWQCB1 | RWQCB1-North Coast Region |
| RWQCB2 | RWQCB2-San Francisco Bay Region |
| RWQCB3 | RWQCB3-Central Coast Region |
| RWQCB4 | RWQCB4-Los Angeles Region |
| LACRWQCB-TMDL | RWQCB4-Los Angeles Region-TMDL |
| RWQCB5 | RWQCB5-Central Valley Region |
| RWQCB5F | RWQCB5-Central Valley Region (Fresno) |
| RWQCB5L | RWQCB5-Central Valley Region (Lower Sacramento) |
| RWQCB5R | RWQCB5-Central Valley Region (Redding) |
| RWQCB5S | RWQCB5-Central Valley Region (Sacramento) |
| RWQCB5U | RWQCB5-Central Valley Region (Upper Sacramento) |
| RWQCB6 | RWQCB6-Lahontan Region |
| RWQCB6V | RWQCB6-Lahontan Region (Victorville) |
| RWQCB7 | RWQCB7-Colorado River Basin Region |
| RWQCB8 | RWQCB8-Santa Ana Region |
| RWQCB9 | RWQCB9-San Diego Region |
| CIWQS 39410 | Sacramento City |
| SCARWTP | Sacramento City American River Water Treatment Plant |
| CIWQS 39382 | Sacramento Cnty Solid Waste Management |
| SacramentoCounty | Sacramento County |
| SCEQCL | Sacramento County Environmental Quality Control Laboratory |
| SMUD | Sacramento Municipal Utility District |
| SRCSD | Sacramento Regional County Sanitation District |
| CIWQS 39399 | Sacramento Regional CSD |
| SRWTP | Sacramento Regional Wastewater Treatment Plant |
| SRWP | Sacramento River Watershed Program |
| SVWQC | Sacramento Valley Water Quality Coalition |
| SSJDC | Sacramento-San Joaquin Delta Conservancy |
| SALCO | Salco Laboratory Services |
| SRRC | Salmon River Restoration Council |
| SRF | Salmonid Restoration Federation |
| CIWQS 39539 | San Andreas SD |
| SanBenitoCounty | San Benito County |
| SBC | San Bernardino County |
| SBCFC | San Bernardino County Flood Control |
| SBCP | San Bernardino County Parks |
| SBCSL | San Buenaventura City Sanitation Laboratory, Ventura |
| SCCPW | San Clemente City Public Works |
| SCWRP | San Clemente City Water Reclamation Plant |
| SDAA | San Diego Airport Authority |
| SDCity | San Diego City |
| SDCPUD | San Diego City Public Utilities Department, La Mesa |
| SDCK | San Diego Coastkeeper |
| SDC | San Diego County |
| SDCDEH | San Diego County Department of Environmental Health |
| SDCPHL | San Diego County Public Health Laboratory |
| SDRPF | San Diego River Park Foundation |
| SDSU-HL | San Diego State University - Hoh Laboratory |
| CIWQS 39664 | San Elijo Joint Powers |
| SEJPA | San Elijo Joint Powers Authority |
| SELC | San Elijo Lagoon Conservancy |
| SanFranciscoCity | San Francisco City |
| SanFranciscoCounty | San Francisco County |
| SFDPH | San Francisco Department of Public Health |
| SFEI | San Francisco Estuary Institute |
| SFIA | San Francisco International Airport |
| SFPUC-RSWPCP | San Francisco Public Utilities Commision, Richmond-Sunset Water Pollution Control Plant |
| SFPUC-STP | San Francisco Public Utilities Commision, Southeast Treatment Plant |
| SFPUC-WDDNR | San Francisco Public Utilities Commission Water Department Division of Natural Resources |
| SFSU-RTC | San Francisco State University - Romberg Tiburon Center |
| SJDWQC | San Joaquin and Delta Water Quality Coaliton, ILRP |
| SanJoaquinCounty | San Joaquin County |
| SJCRD38 | San Joaquin County Reclamation District No. 38 Staten Island |
| SJVDA | San Joaquin Valley Drainage Authority |
| SJSURF | San Jose State University Research Foundation |
| SJSCRWF | San Jose-Santa Clara Regional Wastewater Facility |
| SLDMWA | San Luis and Delta Mendota Water Authority |
| CIWQS 39771 | San Luis Obispo City |
| SLOCWTP | San Luis Obispo City Water Treatment Plant |
| SanLuisObispoCounty | San Luis Obispo County |
| SLOCPHDEH | San Luis Obispo County Public Health Department Environmental Health |
| SLOCPHDL | San Luis Obispo County Public Health Department Lab |
| SLODPW | San Luis Obispo County Public Works Department |
| SLO_City | San Luis Obispo, City of |
| SLR | San Luis Rey Wastewater Department |
| SLWD | San Luis Water District |
| SMBOMI | San Manuel Band Of Mission Indians |
| SanMarcosCity | San Marcos City |
| CIWQS 39800 | San Mateo City |
| SanMateoCounty | San Mateo County |
| SMCL | San Mateo County - Public Health Lab |
| SMCRCD | San Mateo County Resource Conservation District |
| SMCWPPP | San Mateo Countyside Water Pollution Prevention Program |
| SO | San Onofre Generating Station |
| SPAWNERS | San Pablo Watershed Neighbors Education and Restoration Society |
| SFI | Sanctuary Forest, Inc. |
| SOCI | Sanitation And Operation Consultants, Inc. |
| SAC | Santa Ana City |
| SARDA | Santa Ana River Dischargers Association |
| CIWQS 39886 | Santa Ana Watershed Project Authority |
| SAWPA | Santa Ana Watershed Protection Authority |
| SBCK | Santa Barbara Channelkeeper |
| SBarbC | Santa Barbara City |
| SBCDPWWL | Santa Barbara City Dept of Public Works Wastewater Laboratory |
| SantaBarbaraCounty | Santa Barbara County |
| SBCPCW | Santa Barbara County - Project Clean Water |
| SBEHS | Santa Barbara County Environmental Health Services |
| SantaClaraCounty | Santa Clara County |
| SCCDH | Santa Clara County Dept of Health, Occupational Health and Safety |
| SCCWDRWTP | Santa Clara County Water District Rinconada Water Treatment Plant |
| SCVURPPP | Santa Clara Valley Urban Runoff Pollution Prevention Program |
| SCVWD | Santa Clara Valley Water District |
| CIWQS 39958 | Santa Cruz City |
| SCCWPCEL | Santa Cruz City Water Pollution Control Environmental Laboratory |
| SantaCruzCounty | Santa Cruz County |
| SCCEHS | Santa Cruz County Environmental Health Service |
| SCMUL | Santa Cruz Municipal Utilities Lab |
| SMBBC_CIMP | Santa Monica Bay Beach Cities CIMP Group |
| SMCDPWWD | Santa Monica City Dept of Public Works Water Division |
| CIWQS 148702 | Santa Rosa City Dept of Public Works |
| SYCEA | Santa Ynez Chumash Environmental Office |
| SCWTPL | Santee City Wastewater Treatment Plant Laboratory |
| SAIC | Science Applications International Corporation |
| SCIENV | Scientific Environmental Laboratories |
| SCOTT | Scott Laboratories, Petaluma |
| S3LAB | S-Cubed Lab |
| SEA | Sea Education Association |
| SeaWorld | SeaWorld Parks and Entertainment |
| CIWQS 40389 | Seeley Cnty WD |
| SEPRO | SePRO Corporation |
| SAL-MH | Sequoia Analytical - Morgan Hill |
| SAL-WC | Sequoia Analytical - Walnut Creek |
| SAL | Sequoia Analytical Laboratories, Inc. |
| SEQUOIA | Sequoia Analytical Laboratory, Redwood City |
| CIWQS 40516 | SEWER AUTHORITY MID-COASTSIDE |
| CIWQS 40517 | Sewerage Commission Oroville Region |
| SGS AXYS | SGS AXYS Analytical Services Ltd. |
| SGS-Clovis | SGS North America Clovis |
| ShastaCounty | Shasta County |
| CIWQS 40607 | Shasta CSA #17 |
| CIWQS 40620 | Shasta Lake City |
| SVRCD | Shasta Valley Resource Conservation District |
| SHN-Willits | SHN Engineers & Geologists, Inc. - Willits |
| SierraLabs | Sierra Analytical Labs, Inc. |
| SIERRA | Sierra Cascade Laboratory |
| SEM | Sierra Environmental Monitoring, Inc. |
| SFL | Sierra Foothill Laboratory, Inc. |
| SNARL | Sierra Nevada Aquatic Research Laboratory |
| SPI-Redding | Sierra Pacific Industries - Redding |
| CIWQS 40887 | Sierra Pacific Industries Arcata |
| CIWQS 449187 | Sierra Pacific Industries Burney |
| CIWQS 40884 | Sierra Pacific Industries Quincy |
| CIWQS 40878 | Sierra Pacific Industries Redding |
| SSI_FDC | Sierra Streams Institute |
| STL | Sierra Testing Laboratories, Inc. |
| SLKR | Silliker, Inc. |
| SilverState | Silver State Analytical Laboratories, Inc. |
| CIWQS 43973 | Simi Valley City |
| SiskiyouCounty | Siskiyou County |
| Siskiyou-RCD | Siskiyou Resource Conservation District |
| SRA | Smith River Alliance |
| SMITHEMERY | Smith-Emery Company Dept of Chemistry |
| SPLI | Soil & Plant Laboratory Inc. |
| SCL | Soil Control Laboratory |
| SolanaBeachCity | Solana Beach City |
| SolanoCounty | Solano County |
| Solano CWA | Solano County Water Agency |
| SOLANOID | Solano Irrigation District |
| Solano RCD | Solano Resource Conservation District |
| SSA | Solano Stormwater Alliance |
| CIWQS 41499 | Sonoma Cnty Water Agency (SCWA) R1 |
| SonomaCounty | Sonoma County |
| SCAPOSD | Sonoma County Agricultural Preservation and Open Space District |
| SCPRMD | Sonoma County Permit and Resource Management Department |
| SCPHRL | Sonoma County Public Health Regional Laboratory |
| SCWA | Sonoma County Water Agency |
| SEC | Sonoma Ecology Center |
| SMC | Source Molecular Corporation |
| SCWD | South Coast Water District |
| SDAL | South Dakota Agricultural Laboratories |
| SEM_City | South El Monte City |
| CIWQS 41573 | South Feather Water & Power Agency |
| SSJID | South San Joaquin Irrigation District |
| SoSCCo_RegPartners | South Santa Clara County Regional Partners |
| STPUDL | South Tahoe Public Utility District Laboratory |
| SYRCL | South Yuba River Citizens League |
| SRRA | Southeast Regional Reclamation Authority |
| SCAMIT | Southern California Association of Marine Invertebrate Taxonomists |
| SCCWRP | Southern California Coastal Water Research Project |
| SCE | Southern California Edison |
| CIWQS 44116 | Southern California Edison- Rosemead |
| SIU | Southern Illinois University |
| SOCWA | Southern Orange County Water Authority |
| SSJWQC | Southern San Joaquin Water Quality Coalition |
| SAFIT | Southwest Association of Freshwater Invertebrate Taxonomists |
| SDWCL | Sparkletts Drinking Water Corp Lab, McKesson Water Division |
| SPECTRUM | Spectrum Labs, Inc. |
| SRWQL | Sprague River Water Quality Lab |
| SRES | Spring Rivers Ecological Sciences |
| SVLA | Spring Valley Lake Association |
| CIWQS 41889 | SPX Corp |
| CIWQS 41942 | ST. HELENA CITY |
| CIWQS 41969 | Stallion Springs CMSD |
| Stanford ELC | Stanford Environmental Law Clinic |
| Stanford | Stanford Univ |
| StanislausCounty | Stanislaus County |
| Stantec_SD | Stantec Consulting Services Inc., San Diego Office |
| Stantec_SJ | Stantec Consulting Services Inc., San Jose Office |
| Stantec_ZC | Stantec Consulting Services Inc., Zephyr Cove Office |
| SRS | Starr Ranch Sanctuary |
| SFCWA | State and Federal Contractors Water Agency |
| CAWCB | State of California Wildlife Conservation Board |
| SWRCB | State Water Resources Control Board |
| SWRCB-SWAMP | State Water Resources Control Board - Surface Water Ambient Monitoring Program |
| SWRCB-SWAMP-BOG | State Water Resources Control Board - Surface Water Ambient Monitoring Program - Bioaccumulation Oversight Program |
| SWRCB-SWAMP-CHAB | State Water Resources Control Board - Surface Water Ambient Monitoring Program - Cyanobacteria Harmful Algal Bloom Monitoring Program |
| SWRCB-SWAMP-EPA-NS | State Water Resources Control Board - Surface Water Ambient Monitoring Program - EPA National Surveys Participation |
| SWRCB-SWAMP-PSA | State Water Resources Control Board - Surface Water Ambient Monitoring Program - Perennial Streams Assessment |
| SWRCB-SWAMP-RCMP | State Water Resources Control Board - Surface Water Ambient Monitoring Program - Reference Condition Management Program |
| SWRCB-SWAMP-SPoT | State Water Resources Control Board - Surface Water Ambient Monitoring Program - Stream Pollution Trends Monitoring Program |
| CIWQS 44632 | Stellar Biotechnologies, Inc |
| Stetson_Carlsbad | Stetson Engineers, Carlsbad Office |
| Stetson_SanRafael | Stetson Engineers, San Rafael Office |
| SRH | Steve Hanson and Associates |
| SWS | Stillwater Sciences |
| CIWQS 4247 | Stimpel-Wiebelhaus Associates |
| CIWQS 42240 | Stockton City |
| SCMUD | Stockton City Municipal Utilities District |
| SEWD | Stockton East Water District |
| SESJWCD | Stockton-E. San Joaquin Water Conservation District |
| SCID | Stone Corral Irrigation District |
| STONER | Stoner Lab |
| SETTEK | Summit Environmental Technologies, Inc |
| SUN-MTV | Sunnyvale City - Mountain View City |
| SCWPCPL | Sunnyvale City Water Pollution Control Plant Lab |
| SunStar | SunStar Laboratories |
| Surfrider | Surfrider Foundation |
| McCormick | Susan McCormick |
| SLSII | Sustainable Land Stewardship International Institute |
| SBFCA | Sutter Butte Flood Control Agency |
| SutterCounty | Sutter County |
| CIWQS 42701 | Sweetwater Authority |
| SweetwaterFP | Sweetwater Filtration Plant |
| SWRCB-SMC | SWRCB Stormwater Monitoring Coalition |
| TKPOA | Tahoe Keys Property Owners Association |
| TKWQL | Tahoe Keys Water Quality Laboratory |
| TPP | Tahoe Paradise Park |
| TRPA | Tahoe Regional Planning Agency |
| TahoeRCD | Tahoe Resource Conservation District |
| TKSA | Tahoe Truckee Sanitation Agency |
| TDI-BI | TDI-Brooks International |
| CIWQS 45432 | Tehama Co SD #1 |
| TehamaCounty | Tehama County |
| TC | Temecula City |
| TTLI | Terra Tech Labs, Inc. |
| CIWQS 538992 | Test |
| TestAmerica | Test America Laboratories, Inc. |
| TCL | Testing and Controls Lab |
| TetraTech | Tetra Tech, Inc. |
| TEX-AM | Texas A&M University |
| 5Gyres | The 5 Gyres Institute |
| BFMB | The Bay Foundation of Morro Bay |
| CIWQS 39738 | The City of San Juan Bautista |
| MCCCL | The Monterey County Consolidated Chemistry Lab |
| TNC | The Nature Conservancy |
| TNC-BIGSPRINGS | The Nature Conservancy Big Springs |
| TNC-KFALLS | The Nature Conservancy Williamson River Delta |
| CSUSD-SafeWaTER | The Safe WaTER Laboratory at California State University, San Diego |
| TSF | The Sierra Fund |
| TWL | The Twining Laboratories, Inc. |
| CIWQS 45707 | THE VENDO COMPANY |
| TWP | The Watershed Project |
| TWC | The Wildlands Conservancy |
| THERMOL | Thermol Analytical Lab |
| TA | Thomas Analytical |
| CIWQS 47044 | Thousand Oaks City |
| TOCWWTPL | Thousand Oaks City WasteWater Treatment Plant Laboratory |
| TPC | Timber Products Company |
| TDN | Tolowa Dee-ni Nation |
| Torrent | Torrent Laboratory, Inc. |
| TOTALFLOW | Total Flow, Inc. |
| ToxScan | ToxScan |
| CIWQS 46150 | Tracy City |
| TCWTP | Tracy City Water Treatment Plant |
| TrinityCounty | Trinity County |
| TU | Trout Unlimited |
| SCTU | Trout Unlimited South Coast |
| TRWC | Truckee River Watershed Council |
| Truesdail | Truesdail Laboratories, Inc. |
| TulareCounty | Tulare County |
| TBWQC | Tule Basin Water Quality Coalition |
| Tule SW | Tule River Sub-Watershed |
| TuolomneCounty | Tuolomne County |
| TuolumneRCD | Tuolumne County Resource Conservation District |
| TuolumneRT | Tuolumne River Trust |
| CIWQS 46497 | Tuolumne Utilities District |
| CIWQS 46509 | Turlock City |
| TCWQCL | Turlock City Water Quality Control Laboratory |
| TID | Turlock Irrigation District |
| TLSC | Twining Labs Southern California |
| USBR-SCCAO | U.S. Bureau of Reclamation - SCCAO |
| USBR-CGBRO | U.S. Bureau of Reclamation California-Great Basin Regional Office |
| USBR-KFALLS | U.S. Bureau of Reclamation Klamath Falls |
| USBR-NC | U.S. Bureau of Reclamation Northern California Area Office, NC 312 |
| USBR-TRINITY | U.S. Bureau of Reclamation Trinity |
| USFWS-Arcata | U.S. Fish and Wildlife Service Arcata Fish and Wildlife Office |
| USFWS-Klamath | U.S. Fish and Wildlife Service Klamath Falls Office |
| USFWS | U.S. Fish and Wildlife Services - Sacramento |
| USFS | U.S. Forest Service |
| USFS-AREMP | U.S. Forest Service AREMP |
| USFS-FREMONT-WINEMA | U.S. Forest Service Fremont Winema |
| USFS-KLAMATH | U.S. Forest Service Klamath Butte |
| USFS-LAKE TAHOE | U.S. Forest Service Lake Tahoe |
| USFS-LASSEN | U.S. Forest Service Lassen |
| USFS-MODOC | U.S. Forest Service Modoc |
| USFS-San Bernardino | U.S. Forest Service San Bernardino |
| USFS-SHASTA-TRINITY | U.S. Forest Service Shasta Trinity |
| USFS-SIX-RIVERS | U.S. Forest Service Six Rivers |
| USFS-VALLEJO | U.S. Forest Service Vallejo |
| USGS-PCMSC | U.S. Geological Survey - Pacific Coastal and Marine Science Center |
| USGS-KFALLS | U.S. Geological Survey Klamath Falls |
| USGS-CAWSC | U.S. Geological Survey-California Water Science Center |
| USGS-CB | U.S. Geological Survey-Carnelian Bay Field Office |
| USGS-FRESC | U.S. Geological Survey-Forest and Rangeland Ecosystem Science Center |
| USGS-MRL | U.S. Geological Survey-Mercury Research Laboratory |
| USGS-NWQL | U.S. Geological Survey-National Water Quality Laboratory |
| USGS-Scto | U.S. Geological Survey-Water Resources-Sacramento |
| USGS-WERC | U.S. Geological Survey-Western Ecological Research Center |
| NPS-Whiskeytown | U.S. National Park Service-Whiskeytown National Recreation Area |
| USNV | U.S. Navy |
| CIWQS 470633 | UC Davis |
| UCD-AL | UC Davis Analytical Laboratory |
| UCD-SIF | UC Davis Stable Isotope Facility |
| UCD-AHPL | UC Davis-Aquatic Health Program Laboratory |
| UCD-FCCL | UC Davis-Fish Conservation and Culture Laboratory |
| UCD-SVM | UC Davis-School of Veterinary Medicine |
| UCLA | UC Los Angeles |
| UC Merced EAL | UC Merced Environmental Analytical Laboratory |
| UCR-ESRL | UC Riverside - Environmental Sciences Research Laboratory |
| CIWQS 285299 | UC San Diego |
| UCSD-SIO | UCSD Scripps Institution of Oceanography Oceanic |
| CIWQS 47705 | Ukiah City |
| CIWQS 47737 | Uni-Kool Company |
| UnionCity | Union City |
| CIWQS 47784 | Union Pacific RR Company |
| USD | Union Sanitary District |
| CIWQS 485093 | United Auburn Indian Community |
| UCSB-MSI | University of California at Santa Barbara Marine Science Institute |
| UCB-WL | University of California Berkeley-Weston Lab |
| UCCE_Monterey | University of California Cooperative Extension Monterey County |
| UCD_HGL | University of California Davis - Mercury Lab |
| UCD-ATW | University of California Davis Atwill Lab |
| UCD-GGE | University of California Davis Graduate Group in Ecology |
| UCD-PES | University of California Davis Plant and Environmental Sciences Department |
| UCD-WFCB | University of California Davis Wildlife, Fish and Conservation Biology |
| UCD-WRTZ | University of California Davis Wuertz Lab |
| ZALOM | University of California Davis, Zalom Entomology Laboratory |
| UCD-ALL | University of California Davis-Aquatic Limnology Lab |
| UCD-BML | University of California Davis-Bodega Marine Laboratory |
| UCD-GC | University of California Davis-Granite Canyon |
| UCD-HOBB | University of California Davis-Hobbs Laboratory |
| UCD-LAWR | University of California Davis-LAWR |
| UCD-TERC | University of California Davis-Tahoe Environmental Research Center |
| UCD-TATE | University of California Davis-Tate Laboratory |
| UCSB | University of California Santa Barbara |
| UCSB-HOLDEN | University of California Santa Barbara - Holden Laboratory |
| UCSB-VL | University of California Santa Barbara - Valentine Lab |
| UCSC-BSOL | University of California Santa Cruz - Biological and Satellite Oceanography Lab |
| UCSC-CASFS | University of California Santa Cruz - Center for Agroecology and Sustainable Food Systems |
| UCSC-OL | University of California Santa Cruz - Division of Natural Sciences |
| UCSC-DET | University of California Santa Cruz - Environmental Toxicology |
| UCSC-IMS | University of California Santa Cruz - Institute of Marine Sciences |
| UCSC-Shenn | University of California Santa Cruz - Shennan Laboratories |
| UCD-AEAL | University of California-Aquatic Ecoystems Analysis Laboratory |
| UCOB | University of Colorado Boulder |
| UGA | University of Georgia Atlanta |
| UIASL | University of Idaho Analytical Science Laboratory |
| UM-CES | University of Maryland Center for Environmental Science |
| UM-AGNR | University of Maryland, College of Agriculture and Natural Resources |
| UM-HPEL | University of Maryland, Horn Point Environmental Laboratory |
| UNR-NSPHL | University of Nevada, Reno - Nevada State Public Health Lab |
| USC | University of Southern California |
| USC-CL | University of Southern California-Caron Laboratory |
| UoT-RL | University of Toronto - Rochman Lab |
| UU-EGI | University of Utah, Energy and Geoscience Institute |
| UWT-CUW | University of Washington, Tacoma - Center for Urban Waters |
| UWLC | University of Wisconsin - La Crosse |
| UFRWG | Upper Feather River Watershed Group |
| UMRWC | Upper Merced River Watershed Council |
| USLT_RCD | Upper Salinas-Las Tablas Resource Conservation District |
| USGR EWMP Group | Upper San Gabriel River Enchanced Watershed Management Program Group |
| USMILG_TPG | Upper Santa Margarita Irrigated Lands Group |
| URS | URS Corporation |
| USAF-CLINIC | US Air Force Clinic EMC. |
| USAF-MAFB | US Air Force McClellan Air Force Base |
| USAF-BROOKS | US AIR FORCE, Brooks Base Lab, Texas |
| USARMY-ORD | US Army Fort Ord |
| USDA | US Dept Of Agriculture |
| USEPA | US Environmental Protection Agency |
| USEPA-REGION8 | US Environmental Protection Agency Region 8 Laboratory, Colorado |
| USGS | US Geological Survey |
| USGS-EMAP | US Geological Survey Environmental Monitoring And Assessment Program |
| USGS-CWSC | US Geological Survey-Clean Water Science Center |
| USGS-Lawrence | US Geological Survey-District Water Quality Laboratory, Lawrence, KS |
| USGS-PFRG-OCRL | US Geological Survey-Pesticide Fate Research Group (PFRG), Organic Chemistry Research Laboratory (OCRL) |
| USGS-Menlo | US Geological Survey-Water Resources-Menlo Park |
| USNPS | US National Park Service Water Resources Division |
| CIWQS 13831 | US Navy Naval Air Facility El Centro |
| USNAVY-PSL | US Navy Postgraduate School Lab |
| USNAVY-PWEEL | US Navy Public Works Environmental Engineering Lab |
| CIWQS 48447 | USDI Fish & Wildlife Service Coleman |
| CIWQS 48451 | USDI Fish & Wildlife Service Shasta Lake |
| CIWQS 31226 | USDI National Park Service Yosemite |
| CIWQS 48522 | USS-POSCO INDUSTRIES |
| USU-WCMAFE | Utah State University WCMAFE |
| CIWQS 11176 | Vacaville City DPW |
| VALENT | Valent Lab |
| VSFCD | Vallejo Sanitation and Flood Control District |
| CIWQS 48942 | Valley SD |
| VALLEY | Valley Toxicology Service |
| CIWQS 49654 | Valley Water Disposal Company |
| VCPWA | VCPWA-County Stormwater Program |
| CIWQS 11177 | Ventura City |
| VenturaCounty | Ventura County |
| VCEHD | Ventura County Environmental Health Division |
| VCHCA | Ventura County HCA Laboratories |
| VCSQMP | Ventura County Stormwater Quality Monitoring Program |
| VCWPD | Ventura County Watershed Protection District |
| VESTRA | VESTRA Resources, Inc. |
| Viejas | Viejas Tribal Government |
| VIMS-DEAAH | Virigina Institute of Marine Science-Department of Environmental and Aquatic Animal Health |
| CIWQS 8718 | Visalia City |
| VCE | Visalia City Engineering |
| VAL | Vista Analytical Laboratory |
| VistaCity | Vista City |
| VistaIG | Vista Irrigation District |
| CIWQS 49526 | VOPAK Terminal Los Angeles Inc |
| WRID | Walker River Irrigation District |
| CIWQS 50246 | Washington/Niagara Mining Ptnr |
| DFW-WPCL | Water Pollution Control Lab - DFW |
| WTCL | Water Testing & Consulting Laboratory |
| CIWQS 50305 | Watsonville City |
| WWW | Watsonville Wetlands Watch |
| WKL | Weck Laboratories, Inc. |
| WCAL | West Coast Analytical Service, Santa Fe |
| WCILP | Westcoast Coalition for Irrigated Lands Program |
| WAL | Western Agricultural Laboratory |
| WAL_Chino | Western Agricultural Laboratory, Chino |
| WETLAB | Western Environmental Testing Laboratory |
| CIWQS 517405 | Western Riverside County Regional Wastewater Authority |
| WSRCD | Western Shasta RCD |
| WSC | Westlands Stormwater Coalition |
| WWD | Westlands Water District |
| CIWQS 51663 | Westmorland City |
| WestonSolu | Weston Solutions |
| WSJRWC | Westside San Joaquin River Watershed Coalition |
| WWQC | Westside Water Quality Coalition |
| WRA | Wetlands Research Associates |
| CIWQS 50761 | Wheelabrator Shasta Energy Co |
| WRMWSD | Wheeler Ridge-Maricopa Water Storage District |
| Wildlands | Wildlands, Inc. |
| WLDC | Wildomar City |
| WRS | Willamette Research Station |
| CIWQS 523730 | Williams City |
| CIWQS 50967 | Willits City |
| CIWQS 50978 | Willows City |
| WFI | Windset Farms, Inc. |
| CIWQS 51027 | Windsor Water District |
| Windward | Windward Environmental LLC |
| WITZKE | Witzke Lab |
| WCCA | Wolf Creek Community Aliance |
| WoodAquaticTox | Wood Aquatic Toxicology Laboratory |
| WoodGroup | Wood Group, Inc. |
| WoodMolec | Wood Molecular Services Lab |
| WOODARDCURRAN | Woodard & Curran |
| CIWQS 51158 | Woodland City |
| WoRMS | World Register of Marine Species |
| WRECO | Wreco |
| WSU | Wright State University |
| WSPAquaticToxSD | WSP Aquatic Toxicology Laboratory San Diego |
| WSP_SD_MSL | WSP San Diego Molecular Services Laboratory |
| WSP_SD_SkyPkwy | WSP San Diego Sky Parkway |
| YoloCounty | Yolo County |
| CIWQS 52191 | Yountville, Town of |
| CIWQS 52205 | Yuba City |
| YubaCounty | Yuba County |
| CIWQS 356893 | Yucaipa Valley Water Dist |
| Yurok-Tribe | Yurok Tribal Environmental Program |
| ZALCO | Zalco Laboratories, Inc. |
| ZENECA | Zeneca Lab |
| Zone7 | Zone 7 Water Agency |
| ZYMAX | Zymax Envirotechnology |