Best Well Water Testing in San Diego, CA
Compare 27 local well water testing providers in San Diego. Verified listings with real contact info.
27 services listed
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Kleinfelder
770 First Ave. Suite 400, San Diego, CA 92101
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
4.6 ★
17 reviews
Water Ionizer Expert
887 Island Ave, San Diego, CA 92101
Quest Diagnostics
1855 First Ave. #200b, San Diego, CA 92101
Monday: 9:00 AM – 1:00 PM, 1:30 – 3:00 PM | Tuesday: 9:00 AM – 1:00 PM, 1:30 – 2:30 PM | Wednesday: 9:00 AM – 1:00 PM, 1:30 – 2:30 PM | Thursday: 9:00 AM – 1:00 PM, 1:30 – 2:30 PM | Friday: 9:00 AM – 1:00 PM, 1:30 – 3:00 PM | Saturday: Closed | Sunday: Closed
3.5 ★
81 reviews
Precision Mold Testing
3356 Second Ave, San Diego, CA 92103
Monday: Open 24 hours | Tuesday: Open 24 hours | Wednesday: Open 24 hours | Thursday: Open 24 hours | Friday: Open 24 hours | Saturday: 9:00 AM – 5:00 PM | Sunday: Closed
5 ★
393 reviews
SD Mold Inspection
3911 Cleveland Ave Unit # 635104, San Diego, CA 92103
Monday: Open 24 hours | Tuesday: Open 24 hours | Wednesday: Open 24 hours | Thursday: Open 24 hours | Friday: Open 24 hours | Saturday: Open 24 hours | Sunday: Open 24 hours
5 ★
65 reviews
Culligan Water of San Diego
885 Gateway Center Way Suite 101, San Diego, CA 92102
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
4.3 ★
1028 reviews
Environmental Laboratory Network Inc
3440 El Cajon Blvd, San Diego, CA 92104
Monday: 8:00 AM – 6:00 PM | Tuesday: 8:00 AM – 6:00 PM | Wednesday: 8:00 AM – 6:00 PM | Thursday: 8:00 AM – 6:00 PM | Friday: 8:00 AM – 6:00 PM | Saturday: Closed | Sunday: Closed
4.5 ★
17 reviews
Metropolitan Water Systems EP
2515 Camino del Rio S #334, San Diego, CA 92108
Monday: 9:00 AM – 7:00 PM | Tuesday: 9:00 AM – 7:00 PM | Wednesday: 9:00 AM – 7:00 PM | Thursday: 9:00 AM – 7:00 PM | Friday: 9:00 AM – 7:00 PM | Saturday: 9:00 AM – 5:00 PM | Sunday: 9:00 AM – 5:00 PM
4.9 ★
66 reviews
Filtercon Technologies
2801 Camino del Rio S, San Diego, CA 92108
Monday: 9:00 AM – 5:00 PM | Tuesday: 9:00 AM – 5:00 PM | Wednesday: 9:00 AM – 5:00 PM | Thursday: 9:00 AM – 5:00 PM | Friday: 9:00 AM – 5:00 PM | Saturday: 9:00 AM – 4:00 PM | Sunday: Closed
4.6 ★
22 reviews
Apollotek SD
1022 W Morena Blvd suite h, San Diego, CA 92110
Monday: 8:00 AM – 8:00 PM | Tuesday: 8:00 AM – 8:00 PM | Wednesday: 8:00 AM – 8:00 PM | Thursday: 8:00 AM – 8:00 PM | Friday: 8:00 AM – 8:00 PM | Saturday: 8:00 AM – 8:00 PM | Sunday: 8:00 AM – 8:00 PM
5 ★
5 reviews
Forensic Analytical Consulting Services, Inc.
3111 Camino Del Rio N STE 426, San Diego, CA 92108
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
5 ★
2 reviews
Aquashields
2307 Fenton Pkwy #107-163, San Diego, CA 92108
Monday: 9:00 AM – 6:00 PM | Tuesday: 9:00 AM – 6:00 PM | Wednesday: 9:00 AM – 6:00 PM | Thursday: 9:00 AM – 6:00 PM | Friday: 9:00 AM – 6:00 PM | Saturday: Closed | Sunday: Closed
5 ★
1 reviews
Metropolitan Solutions
2403 Hoover Ave, National City, CA 91950
Monday: 8:00 AM – 6:00 PM | Tuesday: 8:00 AM – 6:00 PM | Wednesday: 8:00 AM – 6:00 PM | Thursday: 8:00 AM – 6:00 PM | Friday: 8:00 AM – 6:00 PM | Saturday: Closed | Sunday: Closed
5 ★
2 reviews
Enthalpy Analytical
4340 Vandever Ave, San Diego, CA 92120
Monday: 9:00 AM – 5:00 PM | Tuesday: 9:00 AM – 5:00 PM | Wednesday: 9:00 AM – 5:00 PM | Thursday: 9:00 AM – 5:00 PM | Friday: 9:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
5 ★
1 reviews
Clarkson Laboratory and Supply Inc
350 Trousdale Dr, Chula Vista, CA 91910
Monday: 8:30 AM – 4:00 PM | Tuesday: 8:30 AM – 4:00 PM | Wednesday: 8:30 AM – 4:00 PM | Thursday: 8:30 AM – 4:00 PM | Friday: 8:30 AM – 4:00 PM | Saturday: Closed | Sunday: Closed
4.3 ★
9 reviews
Allstar Water Systems
4635 Ruffner St, San Diego, CA 92111
Monday: 8:00 AM – 3:00 PM | Tuesday: 8:00 AM – 3:00 PM | Wednesday: 8:00 AM – 3:00 PM | Thursday: 8:00 AM – 3:00 PM | Friday: 8:00 AM – 3:00 PM | Saturday: Closed | Sunday: Closed
4.7 ★
57 reviews
Air Check Solutions, LLC
4645 Ruffner St suite r, San Diego, CA 92111
Monday: 8:00 AM – 6:00 PM | Tuesday: 8:00 AM – 6:00 PM | Wednesday: 8:00 AM – 6:00 PM | Thursday: 8:00 AM – 6:00 PM | Friday: 8:00 AM – 6:00 PM | Saturday: 8:00 AM – 1:00 PM | Sunday: Closed
5 ★
20 reviews
Vert Environmental
4715 Viewridge Ave Suite 210, San Diego, CA 92123
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: 8:00 AM – 4:00 PM | Sunday: Closed
4.7 ★
113 reviews
Socal Testing
9187 Clairemont Mesa Blvd Suite 6-514, San Diego, CA 92123
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: 9:00 AM – 3:00 PM | Sunday: Closed
5 ★
28 reviews
EMSL Analytical, Inc.
7725 Convoy Ct, San Diego, CA 92111
Monday: 8:00 AM – 6:00 PM | Tuesday: 8:00 AM – 6:00 PM | Wednesday: 8:00 AM – 6:00 PM | Thursday: 8:00 AM – 6:00 PM | Friday: 8:00 AM – 6:00 PM | Saturday: 8:30 AM – 5:00 PM | Sunday: Closed
4.9 ★
11 reviews
Eurofins Built Environment Testing - San Diego
9445 Farnham St #103, San Diego, CA 92123
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
4.1 ★
10 reviews
ENVIRONMENTAL ANALYSIS ASSOCIATES, INC.
5290 Soledad Rd, San Diego, CA 92109
Monday: 6:00 AM – 8:00 PM | Tuesday: 6:00 AM – 8:00 PM | Wednesday: 6:00 AM – 8:00 PM | Thursday: 6:00 AM – 8:00 PM | Friday: 6:00 AM – 8:00 PM | Saturday: 6:00 AM – 8:00 PM | Sunday: 6:00 AM – 8:00 PM
5 ★
1 reviews
San Diego Pure Water
7556 Trade St, San Diego, CA 92121
Monday: 8:00 AM – 4:30 PM | Tuesday: 8:00 AM – 4:30 PM | Wednesday: 8:00 AM – 4:30 PM | Thursday: 8:00 AM – 4:30 PM | Friday: 8:00 AM – 4:30 PM | Saturday: Closed | Sunday: Closed
5 ★
69 reviews
Origin Environmental Mold Inspections and Testing
8920 Activity Rd #110, San Diego, CA 92126
Monday: Open 24 hours | Tuesday: Open 24 hours | Wednesday: Open 24 hours | Thursday: Open 24 hours | Friday: Open 24 hours | Saturday: Open 24 hours | Sunday: Open 24 hours
5 ★
17 reviews
High Quality Water of San Diego
9825 Carroll Centre Rd, San Diego, CA 92126
Monday: 9:00 AM – 9:00 PM | Tuesday: 9:00 AM – 9:00 PM | Wednesday: 9:00 AM – 9:00 PM | Thursday: 9:00 AM – 9:00 PM | Friday: 9:00 AM – 8:30 PM | Saturday: Closed | Sunday: Closed
4.9 ★
456 reviews
Water Quality Specialists
511 Venture St, Escondido, CA 92029
5 ★
1 reviews
Alpha Analytical Laboratories, Inc.
980 Park Center Dr Suite C, Vista, CA 92081
Monday: 8:00 AM – 5:00 PM | Tuesday: 8:00 AM – 5:00 PM | Wednesday: 8:00 AM – 5:00 PM | Thursday: 8:00 AM – 5:00 PM | Friday: 8:00 AM – 5:00 PM | Saturday: Closed | Sunday: Closed
4.2 ★
12 reviews
Frequently Asked Questions
What should I test my well water for in California?
**CDPH** and **CalEPA** recommend testing annually for coliform bacteria and nitrates at minimum. Given regional contamination history in parts of California, also test for **TCE/PCE**, **hexavalent chromium**, **perchlorate**, and **1,2,3-TCP**, plus lead, arsenic, volatile organic compounds (VOCs), iron, manganese, and pH. Check with **CDPH**, **CalEPA**, and your **county Environmental Health** office for contaminants of concern in your area.
How often should well water be tested in California?
Test annually for bacteria and nitrates. Comprehensive testing every 2-3 years is recommended. Test immediately after any flooding event, if you notice changes in taste, odor, or color, or if you receive a notice about contamination in your area from local authorities.
Where can I get my well water tested in California?
Use a state-certified laboratory. Your local board of health, state university cooperative extension office, or environmental watch program can provide sampling kits and recommend certified labs. Some well service companies also partner with certified labs.
How much does well water testing cost in California?
Basic bacterial and nitrate testing costs $75-$150. A standard potable water panel (bacteria, nitrates, pH, iron, manganese, hardness) costs $150-$300. Extended testing for specific contaminants adds $150-$300 per sample. A comprehensive panel including multiple contaminant types costs $400-$700.