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Is Chino Hills, CA tap water safe?

2 utilities serve Chino Hills, 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

Neither of the 2 utilities serving Chino Hills 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 Chino Hills, which serves the most people here, has 1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Arsenic at 65 ppb, above the limit’s level, no violation. Health goals are stricter than legal limits and are not enforced.

The water from City of Chino Hills is soft to very hard depending on the source, 13 to 630 mg/L (0.8 to 36.8 grains per gallon). How California’s water compares.

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 Chino Hills’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 Chino Hills’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 Chino Hills

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

  • Western Analytical Laboratories, Inc.

    Chino, CA · about 4 miles

    Certified for bacteria, minerals and other inorganics

    (909) 627-3628

  • Enviro-Chem, Inc.

    Pomona, CA · about 5 miles

    Certified for metals

    (909) 590-5905

  • Eurofins Pomona

    Pomona, CA · about 8 miles

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

    (626) 386-1100

All 145 certified labs for California

ZIP codes in Chino Hills

Which ZIP codes are in Chino Hills: 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 Chino Hills

Other towns in San Bernardino County with a page of their own.

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