City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Youngstown, Ohio.
Median indexed hardness
119PPM
11 indexed ZIPs
Range 116–120.5 PPM
City summary
Youngstown has 11 published ZIP profiles across Mahoning County. The indexed median is 119 PPM, compared with 226 PPM across Ohio.
Among the 119 Ohiocities with an indexed median, Youngstown ranks #105from highest to lowest. Across all 162 state ZIP profiles, available estimates run from 77.2to 387 PPM.
The 116–120.5 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
11 of 11 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jan 25, 2016 to Jun 15, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
ZIP code
118.5 PPM
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ZIP code
118.5 PPM
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ZIP code
118 PPM
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ZIP code
116 PPM
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ZIP code
118.5 PPM
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ZIP code
118.5 PPM
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ZIP code
119 PPM
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ZIP code
118.5 PPM
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ZIP code
119 PPM
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ZIP code
120.5 PPM
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ZIP code
118 PPM
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Public water systems
PWSID OH5002303
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 |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | OH5002303 | Jul 2, 2025 | Resolved |
Practical next steps
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Questions people ask
The indexed city median is 119 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.