West Richland City of Water Quality (Washington) – 2025 Report Results

We read 16 results from West Richland City of’s 2025 water quality report. No results over a legal limit; 9 above a health goal or guideline.

Serves about 18,280 people · Water system ID WA5394900 · Read the district’s 2025 report (opens in a new tab)

Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.

Results from the 2025 report

Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.

Contaminant	Result	Health goal	Legal limit	What it means
Arsenichighest measured · range ND to 6 · 2025 report, page 2	6 ppb	0.004 ppb	10 ppb	Above the health goal1,500x the health goal
Cadmiumhighest measured · range ND to 3 · 2025 report, page 2	3 ppb	0.04 ppb	5 ppb	Above the health goal75x the health goal
Copper90th percentile of 33 homes tested, 0 over the action level · Customer taps · 2025 report, page 2	0.41 ppm	0.3 ppm	1.3 ppm (action level)	Above the health goal1.4x the health goal
Fluoridehighest measured · range ND to 3.57 · 2025 report, page 2	3.57 ppm	1 ppm	4 ppm	Above the 2 ppm secondary standard1.8x the 2 ppm secondary standard (EPA's level to prevent tooth discoloration, also used as health guidance); below the 4 ppm legal limit
Gross alpha (radioactivity)highest measured · range 1 to 9.5 · 2025 report, page 2	9.5 pCi/L	0 pCi/L	15 pCi/L	Above the health goalThe health goal is zero
Gross beta (radioactivity)highest measured · range 1.44 to 12.5 · 2025 report, page 2	12.5 pCi/L	0 pCi/L	50 pCi/L	Above the health goalThe health goal is zero
Lead90th percentile of 33 homes tested, 0 over the action level · printed as 0.014 ppm · Customer taps · 2025 report, page 2	14 ppb	0.2 ppb	15 ppb (action level)	Above the health goal70x the health goal
Radium (combined 226 + 228)highest measured · range 0.2 to 2.35 · 2025 report, page 2	2.35 pCi/L	0 pCi/L	5 pCi/L	Above the health goalThe health goal is zero
Total dissolved solidshighest measured · range 212 to 505 · 2025 report, page 1	505 ppm	—	500 ppm guideline	Above the guideline1x the guideline (taste, odor or stains; not a health limit)
Bariumhighest measured · range ND to 0.1 · 2025 report, page 2	0.1 ppm	2 ppm	2 ppm	Below the health goal
Chlorineaverage · 2025 report, page 2	0.94 ppm	None set	4 ppm	Below the legal limit
Chromium (total)highest measured · range ND to 30 · printed as 0.03 ppm · 2025 report, page 2	30 ppb	None set	100 ppb	Below the legal limit
Disinfection byproducts (HAA5)highest measured · range ND to 33.2 · 2025 report, page 2	33.2 ppb	None set	60 ppb	Below the legal limit
Disinfection byproducts (TTHM)highest measured · range 3.2 to 60.1 · 2025 report, page 2	60.1 ppb	None set	80 ppb	Below the legal limit
Nitrate (as N)highest measured · range ND to 4.7 · 2025 report, page 2	4.7 ppm	10 ppm	10 ppm	Below the health goal
Hardnesshighest measured · range 1.19 to 18 · 2025 report, page 1	18 gpg (308 ppm)	—	—	Very hard

Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.

EPA testing for PFAS and lithium

EPA’s own nationwide testing (UCMR 5) found these in West Richland City of’s water between Feb 2024 and Oct 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.

Lithium31.9 ppbFound in 4 of 8 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)

Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.

What you can do

Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.