Coinjock, NC Water Safety: 60/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Water systems across Coinjock produce average compliance results for NC overall — pockets with documented violations exist, and the variation between areas makes checking the specific system serving a given address the most useful step for residents here.
How Coinjock Compares
Data: EPA SDWIS Last verified: 2026-06-03
Coinjock Water: The Quick Version
- Homes built before 1986: 55% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 12.62 — above typical levels.
Water Systems Serving Coinjock
Water delivery in Coinjock, NC is handled by 3 utilities rather than a single system — drawn from 3 providers in federal records, each filing its own compliance reports and setting its own rates.
Overview
We track water quality and home safety data for 1 ZIP code in Coinjock, North Carolina (population ~479), covering 3 community water systems serving approximately 32,639 people region-wide.
No EPA violations recorded across any ZIP codes in Coinjock — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Coinjock: C (60/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Coinjock water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Coinjock
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 27923 | C | CURRITUCK COUNTY WATER SYSTEM | 24,130 |
All ZIP Codes in Coinjock
- 27923 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Coinjock
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Coinjock's Housing Stock?
With 55% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead solder was standard in copper plumbing until federally banned in 1986; lead pipes were common in service lines pre-1970. Coinjock's median build year of 1962 reflects a housing stock where these older materials are a pervasive feature — not a rare legacy — of the residential plumbing landscape.
Over half of homes in Coinjock were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Coinjock: Remediation Cost in Perspective
Equity impact data for Coinjock lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Coinjock are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 32% above the North Carolina average.
Protecting Children from Lead in Coinjock
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 55% of the Coinjock inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Coinjock
Measured across the NFIP's multi-decade tracking period, Coinjock shows a moderate flood record — 67 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Coinjock has a moderate flood history with 67 FEMA claims averaging $11,037 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Coinjock
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 55% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Coinjock, NC