Is Ellensburg, WA tap water safe?
The short answer
None of the 3 utilities serving Ellensburg has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
Ellensburg Water Dept, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 1.3 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Ellensburg Water Dept is soft to moderately hard depending on the source, 39 to 99 mg/L (2.3 to 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 Ellensburg’s ZIP codes, from EPA’s estimates.
- Open report
Ellensburg Water Dept
Washington · serves 20,900 people · about 120 in Ellensburg
2 results above the health goal. The worst: Arsenic at 1.3 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 39 to 99 mg/L (2.3 to 5.8 grains per gallon).
No health-based violations since 2016
- Open report
Grasslands Water System
Washington · serves 264 people · under 100 in Ellensburg
Nothing in its records is above a health goal. Hardness: hard, 160 mg/L (9.4 grains per gallon).
No health-based violations since 2016
- Open report
Central Mobile Home Park
Washington · serves 110 people · under 100 in Ellensburg
2 results above the health goal. The worst: Arsenic at 1.0 ppb, above the health goal. Hardness: moderately hard, 110 mg/L (6.4 grains per gallon).
No 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 Ellensburg Water Dept’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Water testing near Ellensburg
The 3 labs Washington certifies closest to Ellensburg, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Anatek Labs, Inc - Wenatchee
Wenatchee, WA · about 29 miles
Certified for bacteria
Anatek Labs, Inc. - Yakima
Yakima, WA · about 30 miles
Certified for bacteria, nitrate, minerals and other inorganics
LabTest
Yakima, WA · about 30 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
ZIP codes in Ellensburg
Which ZIP codes are in Ellensburg: 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 Ellensburg
Other towns in Kittitas County with a page of their own.
What to do next
- Read Ellensburg Water Dept’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water