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Desert Hills

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
30 people
Connections
16
Water source
Groundwater
Based in
Moses Lake, WA
County
Grant
Owner
Private
Hardness
Moderately hard
The ZIP code it serves

98837

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

Fluoride, arsenic, chromium (total) and nitrate: Washington’s own results, samples taken from June 3, 2020 to July 16, 2026.

Below EPA’s limits1

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.61ppm

Highest yearly average, 2025

Averaged by year, the highest was 0.61 ppm, in 2025, below EPA’s legal limit of 4.0 ppm. That is the only year on file.

What handles it

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Lead
  • Nitrate

Hardness

Moderately hard, 86 mg/L (5 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 5 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. Fluoride, arsenic, chromium (total) and nitrate results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Desert Hills’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 June 3, 2020 to July 16, 2026.

Testing your own tap

Desert Hills’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 Desert Hills serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Soiltest Farm Consultants, Inc. Laboratory

    Moses Lake, WA · under a mile

    Certified for nitrate, minerals and other inorganics

    (509) 765-1622

  • AV Labs, Inc

    Othello, WA · about 24 miles

    Certified for bacteria

    (509) 488-2468

  • Ag Health Laboratories, Inc.

    Sunnyside, WA · about 48 miles

    Certified for bacteria, nitrate

    (509) 836-2020

All 84 certified labs for Washington

Sources

PWSID WA53AC131. Rebuilt from EPA data on Oct. 18, 2026.

Also in Grant County

All Washington utilities

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