City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Williamsburg, Virginia.
Median indexed hardness
20PPM
2 indexed ZIPs
Range 20–20 PPM
City summary
Williamsburg has 2 published ZIP profiles across James City County. The indexed median is 20 PPM, compared with 34 PPM across Virginia.
Among the 37 Virginiacities with an indexed median, Williamsburg ranks #37from highest to lowest. Across all 133 state ZIP profiles, available estimates run from 9to 253 PPM.
The 20–20 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 5, 2016 to Jun 30, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID VA3830850
The system names this served city; Census place overlap links the city to this 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.
No violation records are included in the current lookback window.
Practical next steps
Continue comparing
Questions people ask
The indexed city median is 20 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.