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Is Vashon, WA tap water safe?

13 utilities serve Vashon, by EPA’s records. Here is what EPA’s and Washington’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

2 of the 13 utilities serving Vashon have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records: Water District 19 and Needle Creek Water System.

Water District 19, which serves the most people here, has 1 result above the legal limit, 1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 46.7 ppb, above the legal limit.

The water from Water District 19 is moderately hard, typically 99 mg/L (5.8 grains per gallon). How Washington’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 Vashon’s ZIP codes, from EPA’s estimates.

3 more utilities in Vashon

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

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Water District 19’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 Vashon

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 Washington certifies.

The 3 labs Washington certifies closest to Vashon, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Analytical Resources, LLC

    Tukwila, WA · about 10 miles

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

    (206) 695-6200

  • Friedman & Bruya, Inc.

    Seattle, WA · about 12 miles

    Certified for lead and copper, metals

    (800) 487-8231

  • AmTest Laboratories

    Renton, WA · about 13 miles

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

    (425) 885-1664

All 84 certified labs for Washington

ZIP codes in Vashon

Which ZIP codes are in Vashon: 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: Washington State Department of Ecology, Lab Accreditation Program, environmental laboratories accredited for drinking water analyses; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Vashon

Other towns in King County with a page of their own.

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