City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Lancaster, Pennsylvania.
Median indexed hardness
110PPM
3 indexed ZIPs
Range 106–111 PPM
City summary
Lancaster has 3 published ZIP profiles across Lancaster County. The indexed median is 110 PPM, compared with 84 PPM across Pennsylvania.
Among the 50 Pennsylvaniacities with an indexed median, Lancaster ranks #22from highest to lowest. Across all 139 state ZIP profiles, available estimates run from 43to 166.5 PPM.
The 106–111 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jan 4, 2016 to Jun 11, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID PA7360058
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 |
|---|---|---|---|
| Surface Water Treatment Rule | PA7360058 | May 1, 2025 | Resolved |
| Surface Water Treatment Rule | PA7360058 | Sep 1, 2024 | Resolved |
| TTHM | PA7360058 | Apr 1, 2024 | Resolved · health-based |
Practical next steps
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Questions people ask
The indexed city median is 110 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.