Water Quality Testing Labs

Cal Water tests water at the source and in the distribution system, but does not perform tests of water in customers’ homes. However, such tests can be useful, particularly if you are concerned about health problems caused by your home plumbing or similar issues. If you have a concern about your home water, you can contact one of the below agencies for information on home water testing.

Other labs may also be available, and you should check a lab’s accreditation status before using it. Also, the labs listed below may not be certified for all constituents of interest, so you should ask to see if they are ELAP-certified for the analysis requested before ordering a test. A current list of accredited laboratories can be viewed on the State Water Resources Control Board’s interactive map.

Note: Cal Water is providing this list as a convenience to customers and is not endorsing these agencies. Cal Water makes no representations or warranties concerning the accuracy of their results, methodologies employed, or fees charged.

Anaheim

Physis Environmental, Inc.
1904 East Wright Circle
Anaheim, CA 92806
(714) 602-5320

Anderson

Shasta Analytical Laboratory, Inc.
20550 Dersch Road
Anderson, CA 96007
(530) 378-2200

Arcadia

Acculabs, Inc.
118 La Porte St
Unit C and D
Arcadia, CA 91006
(626)447-1888

Arcata

North Coast Laboratories, Ltd.
5680 West End Road
Arcata, CA 95521
(707)-822-4649

Atwater

Castle Analytical Laboratory
2333 Shuttle Drive
Bldg 908/909
Atwater, CA 95301
(209) 384-2930

Auburn

Diamond Water Laboratory
1660 Old Airport Road
Auburn, CA 95602
(530) 823-0354

Bakersfield

BC Laboratories, Inc.
4100 Atlas Court
Bakersfield, CA 93308
(661) 327-4911

McRay Laboratory
3123 19th Street
Bakersfield, CA 93301
(661) 322-1548

Precision Analytical, Inc.
321 19th Street
Bakersfield, CA 93301
(661) 323-1682

Provera Laboratories, Inc.
5300 Woodmere Dr
Bakersfield, CA 93313
(661) 827-5240

Zalco Laboratories, Inc.
4309 Armour Avenue
Bakersfield, CA 93308-4573
(661) 395-0539

Benicia

Biovir Laboratories, Inc.
685 Stone Road,
Unit 6
Benicia, CA 94510
(707) 747-5906

Delta Environmental Laboratories, LLC
685 Stone Road #11 #12
Benicia, CA 94510
(800) 747-6082

Berkeley

Asbestos Tem Laboratories, Inc
630 Bancroft Way
Berkeley, CA 94710
(510) 704-8930

Curtis & Tompkins, Ltd.
2323 Fifth Street
Berkeley, CA 94710
(510) 486-0900

Brawley

ATS Analytical Laboratories
104 South 8th Street
Brawley, CA 92227
(760) 344-2532

Buena Park

Certified Laboratories of California
6460 Dale Street
Buena Park, CA 90621
(714) 562-8622

Burbank

American Environmental Testing Laboratory, Inc.
2834 and 2908 North Naomi Street
Burbank, CA 91504
(818) 845-8200

Calexico

Imperial Valley Environmental Laboratory
501 East 3rd Street
Calexico, CA 92231
(760) 357-8764

Carlsbad

D-Tek Analytical Laboratories, Inc.
2722 Loker Avenue West, Suite B
Carlsbad, CA 92010
(760) 930-2555

H&P Mobile Geochemistry, Inc.
2470 Impala Drive
Carlsbad, CA 92010
(760) 804-9678

Weston Solutions, Inc.
2433 Impala Drive
Carlsbad, CA 92010
(760) 795-6900

Carmichael

Asbestech
6825 Fair Oaks Boulevard, Suite 103
Carmichael, CA 95608
(916) 481-8902

Carson

Amerisci Los Angeles
24416 S Main Street Suite 308
Carson, CA 90745
(310) 834-4868

Ceres

Argon Analytical Services, Inc.
2905 Railroad Avenue
Ceres, CA 95307
(209) 581-9280

Cerritos

Alpha Scientific Corporation
16760 Gridley Road
Cerritos, CA 90703
(562) 809-8880

Chatsworth

American Analytics
9765 Eton Avenue
Chatsworth, CA 91311
(818) 998-5547

Chico

Basic Laboratory, Inc
3860 Morrow Lane, Suite F
Chico, CA 95928
(530) 894-8966

Fruit Growers Laboratory – Chico
563 East Lindo Avenue
Chico, CA 95926
(530) 343-5818

Chino

Western Analytical Laboratories, Inc.
13744 Monte Vista Avenue
Chino, CA 91710-5512
(909) 627-3628

Chula Vista

Clarkson Laboratory and Supply, Inc.
350 Trousdale Drive
Chula Vista, CA 91910
(619) 425-1993

City of Industry

Weck Laboratories, Inc.
14859 East Clark Avenue
City of Industry, CA 91745
(626) 336-2139

Clovis

APPL, Inc.
908 North Temperance Avenue
Clovis, CA 93611
(559) 275-2175

Colton

MWH Laboratories
1012 E. Cooley Drive, Suite N-P
Colton, CA 92324
(909) 254-0381

Colusa

Sierra Foothill Laboratory Inc
2800 Will S. Green Road
Colusa, CA 95932
(530) 458-7883

Commerce

Michelson Laboratories, Inc.
6280 Chalet Drive
Commerce, CA 90040-3761
(562) 928-0553

Compton

Demenno / Kerdoon
2000 North Alameda Street
Compton, CA 90222
(310) 537-7100

Concord

Cerco Analytical, Inc.
1100 Willow Pass Court
Concord, CA 94520-1006
(925) 462-2771

Costa Mesa

MBC Applied Environmental Sciences
3000 Red Hill Avenue
Costa Mesa, CA 92626
(714) 850-4830

Cypress

Food Microbiological Laboratories, Inc.
10653 Progress Way
Cypress, CA 90630
(714) 657-7527

Davis

Aqua -Science
630 Cantrill Drive, Suite 630
Davis, CA 95618
(530) 753-5456

Kiff Analytical, LLC
2795 2nd Street, Suite 300
Davis, CA 95618
(530) 297-4800×150

Nachtmann Analytical Laboratory, Inc.
1100 West Chiles Road
Davis, CA 95618
(530) 758-5850

Dublin

Alpha Analytical Laboratories, Inc.
6398 Dougherty Road Suite 35
Dublin, CA 94568
(925) 828-6226

El Dorado Hills

Frontier Analytical Laboratory
5172 Hillsdale Circle
El Dorado Hills, CA 95762
(916) 934-0900

Sierra Foothill Laboratory, Inc.
4625 Latrobe Road
El Dorado Hills, CA 95762
(916) 939-3574

Vista Analytical Laboratory
1104 Windfield Way
El Dorado Hills, CA 95762
(916) 673-0520

El Monte

Micron Environmental Labs, Inc.
3565 Lexington Avenue
El Monte, CA 91731
(626) 454-4782

El Segundo

Anachem Laboratories, LLC
140 Standard Street
El Segundo, CA 90245
(310) 322-4993

Emeryville

Micro Analytical Laboratories, Inc.
5900 Hollis Street, Suite M
Emeryville, CA 94608
(510) 653-0824

Fairfield

Pacific EcoRisk, Inc.
2250 Cordelia Road
Fairfield, CA 94534
(707) 207-7760

Folsom

Eurofins Air Toxics Inc.
180 Blue Ravine Road, Suite B
Folsom, CA 95630
(916) 985-1000

Fremont

Aemtek, Inc
46309 Warm Springs Blvd.
Fremont, CA 94539
(510) 979-1979

Air Liquide Balazs Analytical Services
46409 Landing Parkway
Fremont, CA 94538-6496
(510) 624-4001

Fresno

BSK Associates
1414 Stanislaus Street
Fresno, CA 93706-1623
(559) 497-2888

Dellavalle Laboratory, Inc.
1910 West Mckinley Avenue, Suite 110
Fresno, CA 93728
(559) 233-6129

Moore Twining Associates, Inc.
2527 Fresno Street
Fresno, CA 93721
(559) 268-7021

Fullerton

Jones Environmental Laboratories, Inc.
320 East Las Palmas Drive
Fullerton, CA 92835
(714) 449-9937

Patriot Environmental Laboratory Services, Inc.
1041 S. Placentia Avenue
Fullerton, CA 92831
(714) 899-8900

Garden Grove

Calscience Environmental Laboratories, Inc.
7440 Lincoln Way
Garden Grove, CA 92841-1427
(714) 895-5494

LA Testing
11652 Knott Avenue Unit 5
Garden Grove, CA 92841
(714) 828-4999

Gardena

Chem Pro Laboratory, Inc.
941 West 190th Street
Gardena, CA 90248
(310) 532-8611

Gilroy

CM Analytical, Inc.
6700 Brem Lane #10
Gilroy, CA 95020
(408) 848-3619

Grand Terrace

Clinical Laboratory of San Bernardino, Inc.
21881 Barton Road
Grand Terrace, CA 92313
(909) 825-7693

Grass Valley

Cranmer Engineering, Inc.
1188 East Main Street
Grass Valley, CA 95945
(530) 273-7284

MACS Lab, Inc.
431 Crown Point Circle Suite 120
Grass Valley, CA 95945
(530) 274-1470

Greenville

White Water Laboratory
6732 Diamond Mountain Road
Greenville, CA 95947
(530) 284-1568

Hayward

Forensic Analytical Laboratories, Inc.
3777 Depot Road #409
Hayward, CA 94545
(510) 887-8828

Hercules

Davi Laboratories Environmental Associates
730 Alfred Nobel Drive
Hercules, CA 94547
(510) 724-9450

Hesperia

Geo-Monitor, Inc
17152 Darwin Avenue
Hesperia, CA 92345
(760) 244-3481

Hollister

Bolsa Analytical
2337 Technology Parkway, Suite K
Hollister, CA 95023
(831) 637-4590

Huntington Beach

AES Huntington Beach, LLC
21730 Newland Street
Huntington Beach, CA 92646
(714) 374-1408

Baseline Analytical Services
5242 Warner Avenue
Huntington Beach, CA 92649
(714) 273-2955

Irvine

Environmental Support Technologies
16510 Aston Street
Irvine, CA 92606-4805
(949) 679-9500

Qualtest, Inc
2458 Alton Parkway
Irvine, CA 92606
(949) 838-0378

Testamerica Irvine
17461 Derian Avenue, Suite 100
Irvine, CA 92614
(949) 261-1022

Kettleman City

Chemical Waste Management, Inc.
35251 Old Skyline Road
Kettleman City, CA 93239
(559) 386-9711

Laguna Hills

Sierra Analytical Laboratories, Inc.
26052 Merit Circle, Suite 104
Laguna Hills, CA 92653
(949) 348-9389

Lake Forest

Sunstar Laboratories, Inc.
25712 Commercentre Drive
Lake Forest, CA 92630
(949) 297-5020

Livermore

Elite Analytical
111 Lindbergh Avenue, Suite B
Livermore, CA 94551
(925) 371-8821

National Food Laboratory, Inc.
2441 Constitution Drive
Livermore, CA 94551
(925) 551-4206

Lompoc

Clinical Laboratory of San Bernardino II
516-A North Eighth Street
Lompoc, CA 93436
(805) 737-7300

Long Beach

Applied Microbiological Services
1538 West Gaylord Street
Long Beach, CA 90813
(562) 495-9500

Frog Environmental – Lab Services
800 East Ocean Boulevard suit #105
Long Beach, CA 90802
(310) 241-1367

Los Angeles

American Scientific Laboratories, LLC
2520 N San Fernando Road
Los Angeles, CA 90065
(323) 223-9700

Positive Lab Service
781 East Washington Boulevard
Los Angeles, CA 90021
(213) 745-5312

Siemens Water Technology Corp.
5375 South Boyle Avenue
Los Angeles, CA 90058
(323) 277-3083

Milpitas

Torrent Laboratory, Inc.
483 Sinclair Frontage Road
Milpitas, CA 95035
(408) 263-5258

Modesto

A & L Western Agricultural Laboratories, Inc.
1311 Woodland Avenue, Suite 1
Modesto, CA 95351
(209) 529-4080

IEH-JL Analytical Services
217 Primo Way
Modesto, CA 95358
(209) 538-8111

Monrovia

MWH Laboratories
750 Royal Oaks Drive, Suite 100
Monrovia, CA 91016
(626) 386-1100

Monterey

Monterey Bay Analytical Services
4 Justin Court, Suite D
Monterey, CA 93940
(831) 375-6227

Moorpark

Pat-Chem Laboratories
11990 Discovery Court
Moorpark, CA 93021
(805) 532-0012

Napa

Caltest Analytical Laboratory
1885 North Kelly Road
Napa, CA 94558
(707) 258-4000

National City

H.M. Pitt Labs, Inc.
2434 Southport Way, Suite L
National City, CA 91950
(619) 474-8548

Nice

Lake Labs
7267 Marin Street
Nice, CA 95464
(707) 274-3322

Oceanside

Motile Laboratory Services
537 Vine Street
Oceanside, CA 92054
(760) 840-0577

Ontario

ABC Environmental Laboratories
1640 South Grove Avenue, Suite B
Ontario, CA 91761
(562) 413-8343
(909) 923-8628

Orange

Americhem Testing Laboratory
1761 North Batavia Street
Orange, CA 92865
(714) 921-1550

Associated Laboratories
806 North Batavia Street
Orange, CA 92868
(714) 771-6900

Envirocheck, Inc.
2211 West Orangewood Avenue
Orange, CA 92868
(714) 937-0750

Paramount

Caltech Environmental Laboratories, Inc.
6814 Rosecrans Avenue
Paramount, CA 90723-3146
(562) 272-2700

Pasadena

EMS Laboratories, Inc.
117 West Bellevue Drive
Pasadena, CA 91105
(626) 568-4065

Petaluma

Analytical Sciences, Inc.
110 Liberty Street
Petaluma, CA 94952
(707) 769-3128

Pittsburg

McCampbell Analytical, Inc.
1534 Willow Pass Road
Pittsburg, CA 94565
(925) 252-9262

Pleasant Hill

Block Environmental Services, Inc.
2451 Estand Way
Pleasant Hill, CA 94523
(925) 682-7200

Pleasanton

Testamerica San Francisco
1220 Quarry Lane
Pleasanton, CA 94566
(925) 484-1919

Pomona

Enviro-Chem, Inc.
1214 East Lexington Avenue
Pomona, CA 91766
(909) 590-5905

Rancho Cordova

BSK Associates Engineers & Laboratories
3140 Gold Camp Drive
Rancho Cordova, CA 95670
(916) 853-9293

California Laboratory Services
3249 Fitzgerald Road
Rancho Cordova, CA 95742
(916) 638-7301

Sunland Analytical Lab, Inc.
11353 Pyrites Way, Suite 4
Rancho Cordova, CA 95670
(916) 852-8557

TEG Northern California
11350 Monier Park Place (Mobile Lab)
Rancho Cordova, CA 95742
(916) 853-8010

Rancho Dominguez

Forensic Analytical Laboratories, Inc
2959 Pacific Commerce Drive
Rancho Dominguez, CA 90221
(310) 763-2374

Redding

Basic Laboratory, Inc.
2218 Railroad Avenue
Redding, CA 96001
(530) 243-7234

Richmond

Eberline Analytical Corporation, Richmond Laboratory
2030 Wright Avenue
Richmond, CA 94804-3849
(510) 235-2633

Riverbank

Far West Laboratories, Inc.
6602 2nd Street
Riverbank, CA 95367
(209) 869-9260

Riverside

A & R Laboratories
1401 Research Park Drive, Suite 100
Riverside, CA 92507
(951) 779-0310

Edward S. Babcock & Sons, Inc.
6100 Quail Valley Court
Riverside, CA 92507
(951) 653-3351

Microbac Laboratories
1401 Research Park Drive, Suite 100
Riverside, CA 92507
(951) 779-0310

Rocklin

Excelchem
1135 West Sunset Boulevard, Suite A
Rocklin, CA 95765
(916) 543-4445

Sacramento

Continental Water Laboratory
8631 Younger Creek Drive
Sacramento, CA 95828
(916) 379-2323

Sparger Technology, Inc.
3738 Bradview Drive
Sacramento, CA 95827
(916) 369-7688

TJ/H2B Analytical Services, Inc
3123 Fite Circle Suite 105
Sacramento, CA 95827
(916) 361-7177

Weidmann Diagnostic Solutions, Inc.
4011 Power Inn Road
Sacramento, CA 95826
(916) 455-2286

San Bruno

EMLab P & K, LLC
1150 Bayhill Drive, Suite 100
San Bruno, CA 94066
(650) 829-5800

San Diego

Analytical Chemical Labs, Inc.
1123 West Morena Boulevard
San Diego, CA 92110-3853
(619) 276-1558

EMSL Analytical Inc.
7916 Convoy Court
San Diego, CA 92111
(858) 499-1302

Enviromatrix Analytical, Inc.
4340 Viewridge Avenue., Suite A
San Diego, CA 92123
(858) 560-7717

Environmental Engineering Laboratory, Inc
3538 Hancock Street
San Diego, CA 92110
(619) 298-6131

JMR Environmental Services, Inc.
4560 Alvarado Canyon Road, Suite 2D
San Diego, CA 92120
(619) 858-7260

Nautilus Environmental, LLC
4340 Vandever Avenue
San Diego, CA 92120
(858) 587-7333

Pacific Chemical Labs, Inc
905 South 33rd Street
San Diego, CA 92113
(619) 218-4191

Ultimate Labs Inc
5940 Pacific Mesa Court #209/210
San Diego, CA 92121
(858) 677-9297

UMB Analytical, Inc
6153 Fairmount Ave, Suite 104
San Diego, CA 92120
(619) 501-7698

San Francisco

Anresco Laboratories
1370 Van Dyke Avenue
San Francisco, CA 94124
(415) 822-1100

Cel Analytical, Inc.
82 Mary Street, Suite #2
San Francisco, CA 94103
(415) 882-1690

San Jose

Accutest Laboratories
2105 Lundy Avenue
San Jose, CA 95131
(408) 588-0200

Datalab
1893 Concourse Drive
San Jose, CA 95131
(408) 943-1888

San Leandro

EMSL Analytical Inc.
2235 Polvorosa Avenue, Suite 230
San Leandro, CA 94577
(510) 895-3675

San Luis Obispo

Abalone Coast Analytical, Inc.
141 Suburban Road, Suite C1
San Luis Obispo, CA 93401
(805) 595-1080

FGL Environmental, Inc
3442 Empresa Drive, Suite D
San Luis Obispo, CA 93401
(805) 783-2940

San Mateo

Dysert Environmental, Inc.
918 South Humboldt Street
San Mateo, CA 94402
(650) 799-9204

Santa Fe Springs

C & E Laboratories, Inc.
14148 East Firestone Boulevard
Santa Fe Springs, CA 90670
(562) 921-8123

Chemtek Environmental Laboratories, Inc.
13554 Larwin Circle
Santa Fe Springs, CA 90670
(562) 926-9848

Exova, Inc.
9240 Santa Fe Springs Road
Santa Fe Springs, CA 90670
(562) 948-2225

Santa Maria

Oilfield Environmental & Compliance Inc.
307 Roemer Way, Suite 300
Santa Maria, CA 93454
(805) 922-4772

Primus Group, Inc.
2810 Industrial Parkway
Santa Maria, CA 93455
(805) 922-0055

Santa Monica

Clean Earth Environmental Testing Laboratory
1639 11th Street, Suite 114
Santa Monica, CA 90404
(310) 399-4447

Santa Paula

FGL Environmental, Inc.
853 Corporation Street
Santa Paula, CA 93060
(805) 392-2000

Santa Rosa

Bace Analytical and Field Services, Inc
5468 Skylane Blvd., Suite 104
Santa Rosa, CA 95403
(707) 687-2070

Brelje and Race Laboratories, Inc.
425 South E Street
Santa Rosa, CA 95404
(707) 544-8807

K Prime, Inc. Analytical Laboratory
3621 Westwind Boulevard
Santa Rosa, CA 95403
(707) 527-7574

Shingle Springs

Water Environmental Testing Laboratory
5649 Milton Ranch Road
Shingle Springs, CA 95682
(530) 677-5776

Sierra Madre

Hygeia Laboratories, Inc.
82 West Sierra Madre Boulevard
Sierra Madre, CA 91024-2434
(626) 355-4711

Signal Hill

Advanced Technology Laboratories
3275 Walnut Avenue
Signal Hill, CA 90755
(562) 989-4045

Strata-Analysts Group, Inc
3302 Industry Drive
Signal Hill, CA 90755
(562) 426-0199

Simi Valley

Columbia Analytical Services, Inc.
2655 Park Center Drive, Suite A
Simi Valley, CA 93065
(805) 526-7161

South El Monte

ABN Environmental Laboratories, Inc.
10926 Rush Street, Suite A-168
South El Monte, CA 91733
(626) 575-5137

South Pasadena

LA Testing – South Pasadena Laboratory
520 Mission Street
South Pasadena, CA 91030
(800) 303-0047

Stockton

FGL Environmental Inc.
2500 Stagecoach Road
Stockton, CA 95215
(209) 942-0182

Precision Enviro-Tech
3935 North Coronado Avenue
Stockton, CA 95204
(209) 477-8105

Sunnyvale

Spackman Analytic
1159 Sonora Court Suite 118
Sunnyvale, CA 94086
(650) 644-6285

Sylmar

Pacific Coast Analytical Services
15751 Roxford Street
Unit F
Sylmar, CA 91342
(818) 364-7470

Taft

Midway Laboratory Inc
315 Main Street
Taft, CA 93268
(661) 765-2364

Torrance

Bioscreen Testing Services, Inc.
3904 Del Amo Blvd., Suite 801
Torrance, CA 90503
(310) 214-0043

Torrance

EMAX Laboratories, Inc.
1835 West 205th Street
Torrance, CA 90501
(310) 618-8889

Turlock

Certified Laboratories
3241 Liberty Square Parkway
Turlock, CA 95380
(209) 664-1100

Denele Laboratories, Inc.
1232 South Avenue
Turlock, CA 95380
(209) 634-9055

Geoanalytical Laboratories, Inc.
2300 Maryann Drive
Turlock, CA 95380
(209) 669-0100

Tustin

Orange Coast Analytical, Inc.
3002 Dow, Suite 532
Tustin, CA 92780
(714) 832-0064

Truesdail Laboratories, Inc.
14201 Franklin Avenue
Tustin, CA 92780
(714) 730-6239

Twain Harte

Aqualab
18843 Fir Drive
Twain Harte, CA 95383
(209) 586-3400

Ukiah

Alpha Analytical Laboratories, Inc.
208 Mason Street
Ukiah, CA 95482
(707) 468-0401

Ventura

Aquatic Bioassay & Consulting Laboratories, Inc.
29 North Olive Street
Ventura, CA 93001
(805) 643-5621

Aquatic Testing Laboratories
4350 Transport Street
Unit 107
Ventura, CA 93003
(805) 650-0546

Capco Analytical Services
1536 Eastman Avenue, Suite B
Ventura, CA 93003
(805) 644-1095

Watsonville

Soil Control Laboratory
42 Hangar Way
Watsonville, CA 95076
(831) 724-5422

West Sacramento

TestAmerica West Sacramento
880 Riverside Parkway
West Sacramento, CA 95605
(916) 373-5600

Westminster

Power Production Chemical
7301 Fenwick Lane
2nd Floor
Westminster, CA 92683-5202
(714) 895-0525

Woodland

Environmental Micro Analysis, Inc.
460 North East Street
Woodland, CA 95776
(530) 666-6890