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West Kitsap

What EPA’s and Washington’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
2,248 people
Connections
699
Water source
Groundwater
Based in
Poulsbo, WA
County
Kitsap
Owner
Local government
Hardness
Soft
The 2 ZIP codes it serves

98312, 98380

The short answer

Nothing in EPA’s and Washington’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

None of the contaminants in the records below were found at or above the reporting levels.

7 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)
  • Lead
  • Nitrate
  • Total trihalomethanes (TTHM)

Hardness

Soft, typically 54 mg/L (3.1 grains per gallon), across 2 sampling points, in 2024.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 3.1 grains per gallon, salt includedSoftener or salt-free conditioner?Washington water hardness, utility by utility

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Arsenic, chromium (total), fluoride, haloacetic acids (HAA5), nitrate and total trihalomethanes (TTHM) results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. West Kitsap’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Washington’s results run from May 19, 2020 to July 28, 2026.

Testing your own tap

West Kitsap’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Washington certifies.

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

  • Spectra Laboratories - Kitsap, LLC

    Poulsbo, WA · about 15 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (360) 779-5141

  • Eurofins EPK Built Environment Testing, LLC

    Seattle, WA · about 22 miles

    Certified for bacteria, asbestos

    (206) 781-0155

  • MCL Food Testing

    Seattle, WA · about 23 miles

    Certified for bacteria

    (206) 633-3637

All 84 certified labs for Washington

Sources

PWSID WA5308367. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Kitsap County

All Washington utilities

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