Skip to content
TapBuff
ZIP

Is South El Monte, CA tap water safe?

2 utilities serve South El Monte, 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 2 utilities serving South El Monte 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.

San Gabriel Valley Water Co. - El Monte, which serves the most people here, has 3 results above the health goal. The worst: Nitrate at 23 ppm, above the health goal. Health goals are stricter than legal limits and are not enforced.

The water from San Gabriel Valley Water Co. - El Monte is moderately hard to very hard depending on the source, 91 to 340 mg/L (5.3 to 19.9 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 South El Monte’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 San Gabriel Valley Water Co. - El Monte’s water, which serves the most people here. Another utility’s report names what handles its own results.

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Every claim, and more filters, in the full report

Water testing near South El Monte

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

  • Weck Laboratories, Inc.

    City of Industry, CA · about 5 miles

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

    (626) 336-2139

  • Michelson Laboratories, Inc.

    Commerce, CA · about 7 miles

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

    (562) 928-0553

  • EMSL Analytical, Inc. (LA Testing)

    South Pasadena, CA · about 8 miles

    Certified for bacteria, asbestos

    (323) 254-9960

All 145 certified labs for California

ZIP codes in South El Monte

Which ZIP codes are in South El Monte: 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 South El Monte

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

What to do next