City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Chapel Hill, North Carolina.
Median indexed hardness
45PPM
4 indexed ZIPs
Range 43.7–45.2 PPM
City summary
Chapel Hill has 4 published ZIP profiles across Orange County and Chatham County. The indexed median is 45 PPM, compared with 41 PPM across North Carolina.
Among the 381 North Carolinacities with an indexed median, Chapel Hill ranks #184from highest to lowest. Across all 519 state ZIP profiles, available estimates run from 4.7to 267.5 PPM.
The 43.7–45.2 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
4 of 4 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Aug 2, 2016 to Nov 28, 2023.
ZIP directory
Open a ZIP for site-level provenance and measurements.
ZIP code
45.2 PPM
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ZIP code
45.2 PPM
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ZIP code
45.2 PPM
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ZIP code
43.7 PPM
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Public water systems
PWSID NC0368185
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0319110
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC4019004
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0319104
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0368130
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0368145
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0368179
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0368182
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0368188
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID NC0319135
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.
| Record | System | Period | Status |
|---|---|---|---|
| Public Notice | NC0368130 | Feb 15, 2026 | Addressed |
| Revised Total Coliform Rule | NC0368130 | Feb 1, 2026 | Resolved |
| Total Haloacetic Acids (HAA5) | NC4019004 | Jan 1, 2026 | Resolved |
| Lead and Copper Rule | NC0319128 | Jan 1, 2026 | Resolved |
| Public Notice | NC0319133 | Sep 21, 2025 | Addressed |
| Consumer Confidence Rule | NC0368130 | Jul 1, 2025 | Addressed |
| Consumer Confidence Rule | NC0319130 | Jul 1, 2025 | Resolved |
| E. COLI | NC0368119 | Jun 22, 2025 | Addressed |
| Revised Total Coliform Rule | NC0368182 | May 11, 2025 | Resolved |
| Revised Total Coliform Rule | NC0368152 | Apr 1, 2025 | Resolved |
Practical next steps
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Questions people ask
The indexed city median is 45 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.