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Is Tustin, CA tap water safe?

4 utilities serve Tustin, by EPA’s records. Here is what EPA’s and California’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

None of the 4 utilities serving Tustin has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.

City of Tustin, which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOS at 4.2 ppt, above EPA’s new limit, which takes effect in 2029.

A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Tustin’s ZIP codes, from EPA’s estimates.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in City of Tustin’s water, which serves the most people here. Another utility’s report names what handles its own results.

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Every claim, and more filters, in the full report

Water testing near Tustin

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab California certifies.

The 3 labs California certifies closest to Tustin, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Onterris Laboratories, LLC

    Orange, CA · about 5 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts

    (714) 771-6900

  • Envirocheck, Inc.

    Orange, CA · about 6 miles

    Certified for lead and copper

    (714) 937-0750

  • Onterris Laboratories, LLC - Anaheim

    Anaheim, CA · about 7 miles

    Certified for organic chemicals, disinfection byproducts

    (714) 771-6900

All 145 certified labs for California

ZIP codes in Tustin

Which ZIP codes are in Tustin: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Tustin

Other towns in Orange County with a page of their own.

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