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Is Arroyo Grande, CA tap water safe?

11 utilities serve Arroyo Grande, 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

3 of the 11 utilities serving Arroyo Grande have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Woodland Park Mutual Water Co, Country Hills Estates and Ken Mar Gardens.

City of Arroyo Grande Utilities Division, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOS at 6.8 ppt, above EPA’s new limit, which takes effect in 2029.

The water from City of Arroyo Grande Utilities Division is soft to very hard depending on the source, 8 to 505 mg/L (0.5 to 29.5 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 Arroyo Grande’s ZIP codes, from EPA’s estimates.

1 more utility in Arroyo Grande

By EPA’s estimate, each serves fewer people in Arroyo Grande than those above.

  • Ken Mar Gardensserves 84 people · under 100 in Arroyo Grande · 23 health-based violations since 2016

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in City of Arroyo Grande Utilities Division’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 Arroyo Grande

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

  • County of San Luis Obispo Public Health Laboratory

    San Luis Obispo, CA · about 12 miles

    Certified for bacteria

    (805) 781-5507

  • Fruit Growers Laboratory, Inc.

    San Luis Obispo, CA · about 12 miles

    Certified for bacteria

    (805) 783-2940

  • Abalone Coast Analytical, Inc.

    San Luis Obispo, CA · about 12 miles

    Certified for bacteria

    (805) 595-1080

All 145 certified labs for California

ZIP codes in Arroyo Grande

Which ZIP codes are in Arroyo Grande: 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 Arroyo Grande

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

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