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Is La Crescenta-Montrose, CA tap water safe?

3 utilities serve La Crescenta-Montrose, 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 3 utilities serving La Crescenta-Montrose has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Los Angeles - City, Dept. of Water & Power.

Crescenta Valley CWD, 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: PFOA at 5.1 ppt, above EPA’s new limit, which takes effect in 2029.

The water from Crescenta Valley CWD is hard to very hard depending on the source, 140 to 360 mg/L (8.2 to 21.1 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 La Crescenta-Montrose’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 Crescenta Valley CWD’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 La Crescenta-Montrose

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

  • EMSL Analytical, Inc. (LA Testing)

    South Pasadena, CA · about 9 miles

    Certified for bacteria, asbestos

    (323) 254-9960

  • Pat-Chem Laboratories

    San Fernando, CA · about 13 miles

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

    (800) 400-5227

  • Positive Lab Service

    Los Angeles, CA · about 14 miles

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

    (213) 745-5312

All 145 certified labs for California

ZIP codes in La Crescenta-Montrose

Which ZIP codes are in La Crescenta-Montrose: 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 La Crescenta-Montrose

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

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