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Pit Water Co 328

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
48 people
Connections
16
Water source
Groundwater
Based in
Lacey, WA
County
Grays Harbor
Owner
Local government
Hardness
Moderately hard
The ZIP code it serves

98557

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

Nitrate, arsenic, chromium (total) and fluoride: Washington’s own results, samples taken from March 3, 2020 to May 4, 2026.

Below EPA’s limits1

Nitrate

Comes from the source

Below EPA’s limits

0.24ppm

Highest sample; found in 1 of 7

2026: not found

The highest sample, in 2020, was 0.24 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, it wasn’t found in its one sample.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • Lead

Hardness

Moderately hard, 72 mg/L (4.2 grains per gallon), at its one sampling point, in 2025.

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 4.2 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.

What this report can’t tell you

  • Everything else. Nitrate, arsenic, chromium (total) and fluoride results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Pit Water Co 328’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 March 3, 2020 to May 4, 2026.

Testing your own tap

Pit Water Co 328’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 Pit Water Co 328 serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Olympic Analytical LLC dba Vanguard Laboratory

    Olympia, WA · about 12 miles

    Certified for bacteria, nitrate

    (360) 967-7010

  • Grays Harbor County Water Testing Lab

    Montesano, WA · about 19 miles

    Certified for bacteria, nitrate

    (360) 249-4413

  • Thurston County Health Department Laboratory

    Olympia, WA · about 19 miles

    Certified for bacteria, nitrate

    (360) 867-2631

All 84 certified labs for Washington

Sources

PWSID WA5305956. Rebuilt from EPA data on Oct. 18, 2026.

Also in Grays Harbor County

All Washington utilities

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