Is Richland, WA tap water safe?
The short answer
1 of the 3 utilities serving Richland has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records: Badger Mountain Irrigation District.
City of Richland, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOS at 17 ppt, above EPA’s new limit, which takes effect in 2029.
The water from City of Richland is moderately hard to very hard depending on the source, 70 to 266 mg/L (4.1 to 15.6 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 Richland’s ZIP codes, from EPA’s estimates.
- Open report
City of Richland
Washington · serves 106,499 people · about 45,800 in Richland
2 results above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOS at 17 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: moderately hard to very hard depending on the source, 70 to 266 mg/L (4.1 to 15.6 grains per gallon).
No health-based violations since 2016
- Open report
Badger Mountain Irrigation District
Washington · serves 2,331 people · about 990 in Richland
2 results above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 90.1 ppb, above the legal limit.
7 health-based violations since 2016
- Open report
Tri - City Water District #45
Washington · serves 300 people · nearly all in Richland
2 results above the health goal. The worst: Lead at 4.4 ppb, above the health goal. Hardness: very hard, typically 270 mg/L (15.8 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 Richland’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: PFOS, PFOA, 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: PFOS, PFOA, 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: PFOS, PFOA, Arsenic, Lead
Water testing near Richland
The 3 labs Washington certifies closest to Richland, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Energy NW Environmental (PPL) Lab
Richland, WA · about 3 miles
Certified for bacteria
Energy Northwest Environmental Services Lab
Richland, WA · about 3 miles
Certified for nitrate, lead and copper, metals, minerals and other inorganics
Benton-Franklin Health District Lab
Kennewick, WA · about 8 miles
Certified for bacteria, nitrate, minerals and other inorganics
Which ZIP codes are in Richland: 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 Richland
Towns nearby with a page of their own.
What to do next
- Read City of Richland’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOSRanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water