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Is Irwindale, CA tap water safe?

5 utilities serve Irwindale, 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

1 of the 5 utilities serving Irwindale has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: San Gabriel Valley Water Co. - El Monte.

Valley County Water Dist., which serves the most people here, has 3 results above the health goal. The worst: Nitrate at 54 ppm, above the health goal. Health goals are stricter than legal limits and are not enforced.

The water from Valley County Water Dist. is hard to very hard depending on the source, 149 to 364 mg/L (8.7 to 21.3 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 Irwindale’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 Valley County Water Dist.’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 Irwindale

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

  • Eurofins Pomona

    Pomona, CA · about 11 miles

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

    (626) 386-1100

  • Weck Laboratories, Inc.

    City of Industry, CA · about 11 miles

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

    (626) 336-2139

  • EMSL Analytical, Inc. (LA Testing)

    South Pasadena, CA · about 14 miles

    Certified for bacteria, asbestos

    (323) 254-9960

All 145 certified labs for California

ZIP codes in Irwindale

Which ZIP codes are in Irwindale: 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 Irwindale

Other towns in Los Angeles County with a page of their own.

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