01The verdict: is Nags Head water safe?
Based on EPA testing data, Nags Head's tap water is generally safe to drink. The water system earned a grade of A+ (96.4/100), meeting federal drinking water standards across key contaminant categories. The city's 1 water system serves approximately 3,125 residents using groundwater (wells).
Nothing over a legal limit
Every contaminant measured in Nags Head's water is within its EPA limit, and no violations are unresolved.
See the testing ↓Lead is well under the limit
90th-percentile lead is 0.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓A flood-prone service area
10 federal disaster declarations on record. After severe weather, watch for boil-water advisories.
See the risk factors ↓Nags Head's drinking water received a grade of A+ (96.4 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 3,125 residents using purchased ground water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 13 violations on record, including 0 health-based violations. All violations have been resolved.
Nags Head ranks #2 out of 400 cities in North Carolina for water quality, placing it one of the best in the state. Nags Head purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition. As a small community water system, Nags Head may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Nags Head's water
Every contaminant flagged in Nags Head, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in North Carolina
Cities ranked by compounds detected Cu Copper in North Carolina
Cities ranked by 90th-percentile copper
03Nags Head's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 13 violations on record, including 0 health-based violations. All violations have been resolved.
All ten of the last ten years were clean — no EPA violations recorded for Nags Head.
0ppb(2025)
One sampling round on record — 0% of the 15ppb EPA action level. Sampled at higher-risk homes (90th percentile).
04Where Nags Head's water comes from
Nags Head purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Purchased Groundwater
Water is bought from a regional wholesaler; quality starts at the supplier's intake and treatment.
Wholesale supplier
Primary treatment happens at the wholesaler; the local utility maintains disinfectant residual in its pipes.
1 system
1 water system, operated under local government ownership.
3,125 people
Residents served across Nags Head's service area.
Water quality depends on both the wholesaler's treatment standards and the condition of Nags Head's local distribution pipes and storage facilities. Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment. The system is operated by local government ownership and serves approximately 3,125 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| NAGS HEAD, TOWN OF | NC0428010 | 3,125 | Purchased Groundwater |
05Pressure on Nags Head's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Flood & storm history
10 federal disaster declarations on record for Dare County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
Drought
Dare County is in D1 (moderate drought) per the U.S. Drought Monitor (week of Jul 2026). Drought can raise disinfection-byproduct levels and taste/odor issues as utilities draw from lower reservoirs.
06How Nags Head compares
Scores for nearby North Carolina cities on one line, with the average marked.
dashed line = North Carolina average (43/100)
Nags Head scores 96.4/100 — above the North Carolina average of 43/100. It outscores 10 of 10 nearby cities. Full North Carolina rankings →
36.5 / 100FRaleigh, NC
30.7 / 100AClemmons, NC
86 / 100FDurham, NC
36.6 / 100FGreensboro, NC
33.5 / 100FCary, NC
34.6 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Nags Head's water — not generic advice.
A basic carbon filter still helps
Nags Head's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.
Compare tested filters →Read your utility's annual report
Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.
How to read a CCR →Watch for Nags Head alerts
This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.
All water alerts →Frequently asked questions
Is Nags Head, NC tap water safe to drink?
Nags Head's water quality earned a grade of A+ (96.4/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #2 out of 400 cities tested in North Carolina.
What contaminants are in Nags Head's water?
Lead was measured at 0.0 ppb (90th percentile). 13 violations are on record.
How is Nags Head's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Nags Head?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Nags Head's water come from?
Nags Head's water is sourced from Purchased ground water. The city has 1 water system serving approximately 3,125 residents.
Is Nags Head's groundwater at risk of contamination?
Nags Head uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 13 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Nags Head's water compare to other cities?
Nags Head ranks #2 out of 400 cities in North Carolina (better than 100% of state cities) and #185 out of 15382 cities nationally (99th percentile). The grade of A+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Nags Head's small water system affect quality?
Nags Head's system serves approximately 3,125 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 13 violations on record.