City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for West Richland, Washington.
Median indexed hardness
60PPM
2 indexed ZIPs
Range 60.4–60.4 PPM
City summary
West Richland has 2 published ZIP profiles across Benton County. The indexed median is 60 PPM, compared with 104 PPM across Washington.
Among the 133 Washingtoncities with an indexed median, West Richland ranks #111from highest to lowest. Across all 189 state ZIP profiles, available estimates run from 20.6to 238 PPM.
The 60.4–60.4 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jan 19, 2016 to Jun 2, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID WA5394900
A municipal system, in-state city, and served county all agree with this Census ZCTA.
Compliance history
No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.
| Record | System | Period | Status |
|---|---|---|---|
| Nitrate | WA5394900 | Jan 1, 2021 | Resolved |
Practical next steps
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Questions people ask
The indexed city median is 60 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.
Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.
Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.