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North Carolina Tap Water Quality Report

Water quality grades, lead levels, and violation data for all 1,085 ZIP codes in North Carolina

ZIP Codes

1,085

Health Violations (5yr)

2,075

Avg Safety Score

72.9/100

High Lead Risk ZIPs

32.8%

Overview: Drinking Water in North Carolina

The tap water quality in North Carolina currently sits near the national average, registering a composite safety score of 72.9/100 across 1,085 monitored ZIP codes. While a significant portion of the state maintains adequate water quality and full compliance with federal standards, 1% of ZIP codes in North Carolina have received a failing grade due to recent compliance issues. Monitoring data from the EPA indicates that while the majority of residents receive safe tap water, localized issues remain a challenge for several municipal systems.

The state's water infrastructure has experienced significant compliance hurdles recently, logging a staggering 2,075 health-based violations over the past 5-year monitoring window out of 12,821 total violations. When a state registers this volume of health-based violations, it often points to systemic challenges such as aging distribution networks, agricultural runoff affecting groundwater, or underfunded rural water systems. North Carolina Department of Environmental Quality is responsible for enforcing corrective actions and penalizing systems that repeatedly fail to meet safe drinking water standards.

One of the most pressing concerns for North Carolina residents is the elevated risk of lead exposure. EPA models and historical monitoring indicate that 32.8% of ZIP codes in North Carolina are classified as High or Very High risk for lead. This is frequently associated with older housing stock built before the 1986 federal ban on lead pipes and solder. Residents living in older homes should strongly consider having their tap water independently tested and utilizing a certified NSF/ANSI 53 water filter for drinking and cooking.

Surface Water

66.5%

of ZIP codes

Total Violations

12,821

5-year record

Grade A ZIPs

241

22% of state

Grade F ZIPs

11

1% of state

Water Quality Grade Distribution in North Carolina

How do North Carolina's 1,085 ZIP codes stack up by water quality grade?

A
241 ZIP codes22%
B
426 ZIP codes39%
C
290 ZIP codes27%
D
117 ZIP codes11%
F
11 ZIP codes1%

Common Drinking Water Contaminants in North Carolina

The following are common regulated contaminants found in North Carolina drinking water based on EPA violation records. Click any contaminant to learn about EPA safety limits and health effects.

Stage 2 DBP RuleHaloacetic Acids (HAA5)Total Trihalomethanes (TTHM)Combined RadiumContaminant 2946Stage 1 DBP RuleLeadConsumer Confidence Report Rule

Source: EPA Safe Drinking Water Act Maximum Contaminant Level regulations. For the complete list of regulated contaminants and MCLs, see the Water Quality Safety Guide.

Frequently Asked Questions โ€” North Carolina Drinking Water

Is tap water generally safe to drink in North Carolina?+
Yes, for the majority of residents, tap water in North Carolina is treated, heavily regulated, and safe to drink. However, safety varies significantly by location. Statewide, 241 ZIP codes earn an "A" grade for perfect compliance, while 11 earn an "F" due to historical violations. It is essential to search your specific ZIP code above to view the exact compliance record for your local water utility.
What are the biggest water quality issues in North Carolina?+
Based on a 5-year analysis of EPA violation data, the primary water quality challenges in North Carolina include managing 2,075 health-based violations statewide and addressing infrastructure age. Additionally, 32.8% of ZIP codes in the state are rated as having a High or Very High probability of lead exposure risk, which is a key metric residents should monitor.
Who regulates and enforces drinking water standards in North Carolina?+
Drinking water in North Carolina is primarily regulated by North Carolina Department of Environmental Quality under a primacy agreement with the U.S. Environmental Protection Agency (EPA). The EPA sets the federal baseline standards (Maximum Contaminant Levels) through the Safe Drinking Water Act, while North Carolina Department of Environmental Quality conducts the day-to-day monitoring, issues compliance orders, and enforces penalties against local water systems that fail to meet these standards.
Where does North Carolina get its drinking water?+
Water sources in North Carolina vary widely by municipality. Statewide, approximately 66.5% of the monitored ZIP codes rely on surface water sources (such as rivers, lakes, and reservoirs), which require extensive filtration and disinfection. The remaining systems primarily rely on groundwater pumped from underground aquifers, which is naturally filtered but can be susceptible to agricultural runoff or naturally occurring minerals.
How do I find the official water quality report for my home in North Carolina?+
You can enter your ZIP code in our search box above for a detailed, easy-to-read report based on EPA data. Furthermore, your local water utility is required by federal law to distribute an annual Consumer Confidence Report (CCR) by July 1 of each year. You can contact your utility directly to request this document, which outlines exact contaminant measurements from the previous year.
View All 1,085 ZIP Codes in North Carolina

Browse EPA water quality data for every monitored ZIP code. For faster results, use the search bar above.

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+ 785 more ZIP codes โ€” please search by city above