Supply, NC Water Safety: 50/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
If you're researching Supply, NC tap water quality, the baseline finding is below average — health-based violations are documented in several service areas, and verifying the specific system at your address is the right next step.
How Supply Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Supply Residents
- Homes built before 1986: 35% — older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 14.3 — above typical levels.
Supply's Water Providers
With one provider handling most of Supply's residential supply in NC, water service accountability is concentrated in a single utility among the 1 system on record.
Overview
We track water quality and home safety data for 1 ZIP code in Supply, North Carolina (population ~12,336), covering 1 community water system serving approximately 142,227 people region-wide.
No EPA violations recorded across any ZIP codes in Supply — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Supply: D (50/100)
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
Supply water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Supply
- 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 |
|---|---|---|---|
| 28462 | D | BRUNSWICK COUNTY WATER SYSTEM | 142,227 |
All ZIP Codes in Supply
- 28462 [D]
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.
Supply Community Health Snapshot
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
Supply Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Supply's residential inventory spans multiple construction eras, with the median build year of 1997 landing in a zone where pre- and post-1986 homes are both well represented. That split matters because homes built before 1986 may contain lead-soldered copper joints — a plumbing practice banned that year — while those built before 1970 face the additional possibility of lead pipes in the service line. Whether a specific household sits on the older or newer end of this distribution is the primary variable shaping its individual exposure risk.
Most homes in Supply were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Supply
Setting Supply remediation figures against its property market, the resulting ratio sits comfortably in the low tier — a classification that reflects the kind of household financial position where most homeowners can identify documented issues, schedule the work, and absorb the cost without it registering as a significant budget disruption.
Remediation costs in Supply are relatively low compared to home values. The $1,200–$2,600 estimated range is a small fraction of median property value. Home values are 3% below the North Carolina average.
Supply: Lead Risk & Vulnerable Populations
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.
Wherever 35% of local housing was built before solder rules changed — as is the case in Supply — a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Supply: Flood History & Water Damage Risk
Supply's NFIP record reflects high flood exposure — 2409 claims spanning a long history of significant events, with 100% of ZIP codes in FEMA-designated zones. High flood frequency increases the probability of water quality disruptions at each point in the supply chain: treatment facilities, transmission infrastructure, and private wells all face elevated stress risk when flooding is a recurring feature rather than a rare exception.
Supply has a significant flood history with 2,409 FEMA flood insurance claims on record, averaging $6,323 per claim. With 100% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
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>$1,800</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 Supply
- 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 35% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Supply, NC