Water Quality: Chapel Hill, NC

18 water systems • 3,353 people served

Multiple Health Violations
527
Total Violations
57
Health-Based Violations
18
Water Systems
3,353
Population Served

Water Quality Summary

Chapel Hill is served by 18 public water systems with a combined service population of 3,353 people, and has 527 EPA Safe Drinking Water Act violations on record. Critically, 57 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Chapel Hill's violation count is 334% above the national average for North Carolina. Contaminants associated with violations include Disinfection Byproducts, HAA5, Haloacetic Acids, Selenium, Stage 2 DBP.

Contaminants Found

Disinfection Byproducts

Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.

Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter

HAA5

Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.

Common source: Reaction of chlorine disinfectants with organic matter in treated water

EPA limit: 0.060 mg/L (60 ppb)

Haloacetic Acids

Linked to increased cancer risk and potential reproductive and developmental effects with long-term exposure.

Common source: Reaction of chlorine disinfectants with organic matter in treated water

EPA limit: 0.060 mg/L (60 ppb)

Selenium

Hair loss, nail brittleness, and nervous system damage at elevated concentrations.

Common source: Natural geological deposits, mining discharges, oil refinery waste

EPA limit: 0.05 mg/L (50 ppb)

Stage 2 DBP

Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.

Common source: Chlorine disinfection reacting with natural organic matter in source water

EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L

Water Systems Serving Chapel Hill

System Name PWSID Source Population Violations
ROCKBRIDGE S/D NC4092073 Groundwater 1,042 54
SOUTHERN TRACE S/D NC4392141 Groundwater 485 37
ACRES OF SPACE MHP NC0392101 Groundwater 332 20
HORSESHOE MOBILE ESTATES NC0392113 Groundwater 255 40
DOGWOOD MHP NC0279108 Groundwater 228 6
THE HILLS OF ROSEMONT NC4019015 Groundwater 192 10
70 EAST MOBILE ACRES NC0392107 Groundwater 140 11
LAKEVIEW MOBILE ESTATES NC0392151 Groundwater 114 11
WILLIAM`S MHP NC0279124 Groundwater 86 28
SOUTH GROVE SUBDIVISION NC4068021 Groundwater 75 6
COLONIAL VILLAGE NC0279160 Groundwater 71 3
RILEY`S MHP NC0368160 Groundwater 65 54
OAK GROVE MHP NC0368152 Groundwater 64 54
TRINITY FARMS S/D NC0392274 Groundwater 42 21
MANNSFIELD CONDOMINIUMS NC0319133 Groundwater 41 35
WOODLAND PARK NC0368147 Groundwater 41 25
CEDAR LAKE CONDO NC0319128 Groundwater 40 69
CAROLANTIC PARK NC0368125 Groundwater 40 43

Concerned About Your Water?

A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.

Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.

Other Cities in North Carolina

Charlotte 1202 violations • 1,253,056 served Raleigh 887 violations • 647,319 served Cary 3297 violations • 439,492 served Pfafftown 11 violations • 388,060 served Durham 1147 violations • 323,806 served Greensboro 241 violations • 321,041 served Fayetteville 47 violations • 215,789 served Jacksonville 894 violations • 215,628 served

View all cities in North Carolina →

Data Sources

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.

Verify at epa.gov • Search ECHO for NC