California laboratory directory
State-certified laboratory
San Mateo County Public Health Laboratory
225 37th Avenue Building A First Floor, San Mateo, CA, 94403
Services listed in the certification record
Certified for: Drinking water
Address225 37th Avenue Building A First Floor, San Mateo, CA, 94403
Phone(650) 573-2500
Certification statuscertified
Certifying stateCalifornia (CA)
Residential customersResidential service unknown — confirm with lab
Sample methodSample intake unknown — confirm with lab
Source listOfficial state source
How to use a water testing lab
Contact the laboratory before collecting a sample. Ask whether it offers the test you need, request its current sampling instructions and containers, and confirm timing, pricing, and how to submit the sample.
Listing data fetched from the official source: 2026-09-05T03:25:53+00:00 · View listing data (JSON)
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Claim this listing or report an update: email hello [at] watertestingfinder [dot] com and put lab ID CA-320 in the subject line.