Is Four Lakes, WA tap water safe?
The short answer
None of the 3 utilities serving Four Lakes has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
City of Cheney, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.9 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Cheney is moderately hard to hard depending on the source, 110 to 160 mg/L (6.4 to 9.4 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 Four Lakes’s ZIP codes, from EPA’s estimates.
- Open report
City of Cheney
Washington · serves 16,954 people · about 110 in Four Lakes
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.9 ppb, above EPA’s health benchmark. Hardness: moderately hard to hard depending on the source, 110 to 160 mg/L (6.4 to 9.4 grains per gallon).
No health-based violations since 2016
- Open report
Four Lakes Water District 10
Washington · serves 433 people · under 100 in Four Lakes
1 result above the health goal. The worst: Lead at 0.6 ppb, above the health goal. Hardness: moderately hard, typically 72 mg/L (4.2 grains per gallon).
No health-based violations since 2016
- Open report
City of Spokane
Washington · serves 346,138 people · under 100 in Four Lakes
1 result above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOS at 6.1 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: moderately hard to hard depending on the source, 87 to 174 mg/L (5.1 to 10.2 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 City of Cheney’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Four Lakes
The 3 labs Washington certifies closest to Four Lakes, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Anatek Labs, Inc - Spokane
Spokane, WA · about 20 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Tshimakain Creek Laboratories
Spokane Valley, WA · about 23 miles
Certified for bacteria, nitrate, minerals and other inorganics
Eurofins Spokane
Spokane Valley, WA · about 23 miles
Certified for bacteria, nitrate, minerals and other inorganics
Which ZIP codes are in Four Lakes: 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 Four Lakes
Towns nearby with a page of their own.
What to do next
- Read City of Cheney’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water