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Is Discovery Bay, CA tap water safe?

Town of Discovery Bay serves Discovery Bay, by EPA’s records. Here is what EPA’s and California’s records show for it, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

Town of Discovery Bay serves Discovery Bay. In EPA’s and California’s records it has 2 results above the health goal and 1 result above EPA’s health benchmark, and no health-based violation since 2016.

The worst: Lithium at 34 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.

The water from Town of Discovery Bay is hard to very hard depending on the source, 144 to 288 mg/L (8.4 to 16.8 grains per gallon). How California’s water compares.

Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Town of Discovery Bay’s water.

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Every claim, and more filters, in the full report

Water testing near Discovery Bay

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 Discovery Bay, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Precision Enviro-Tech

    Stockton, CA · about 19 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics

    (209) 405-0601

  • San Joaquin County Public Health Laboratory

    Stockton, CA · about 19 miles

    Certified for bacteria

    (209) 468-3460

  • Alpha Analytical Laboratories, Inc.

    Livermore, CA · about 20 miles

    Certified for bacteria

    (707) 769-3128

All 145 certified labs for California

ZIP codes in Discovery Bay

Which ZIP codes are in Discovery Bay: 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 Discovery Bay

Other towns in Contra Costa County with a page of their own.

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