Concord, NH: 56 Health Violations — 54/100 (2026)
4 ZIP codes · 6 water systems · Updated 2026-06-03
State safety rankings put Concord, NH near the lower tier — below-average compliance on record.
How Concord Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Concord Water
- Your city's water systems recorded 84 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Estimated remediation: $2,225 per household.
- CDC health risk index: 11.83.
Who Supplies Your Water in Concord
Water service in Concord, NH is split across 3 utilities out of 6 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 4 ZIP codes in Concord, New Hampshire, covering 6 community water systems serving approximately 50,355 people.
4 of 4 ZIP codes (100%) have recorded EPA violations. 56 health-based violations documented.
Home Safety Score
Average Home Safety Score for Concord: D (54/100)
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
Concord water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 4 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 45 | 4 |
| Consumer Confidence Report Rule | Reporting | 30 | 4 |
| Total Coliform | Microbiological | 10 | 4 |
| Surface Water Treatment Rule | Treatment Technique | 5 | 4 |
| Lead and Copper Rule | Treatment Technique | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 03301 | D | 21 | 14 | Concord Water Department |
| 03302 | C | 21 | 14 | Concord Water Department |
| 03303 | D | 21 | 14 | Concord Water Department |
| 03305 | D | 21 | 14 | Concord Water Department |
All ZIP Codes in Concord
- 03301 [D] — 21 violations ⚠
- 03302 [C] — 21 violations ⚠
- 03303 [D] — 21 violations ⚠
- 03305 [D] — 21 violations ⚠
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.
Health Outcomes in Concord
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
Top Contaminants in Concord Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Concord Homeowners
Property equity in Concord runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Concord are relatively low compared to home values. The $1,150–$4,200 estimated range is a small fraction of median property value. Home values are 5% below the New Hampshire average.
Lead Exposure Risk for Children in Concord
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.
Lead risk in Concord appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Concord
A moderate NFIP record for Concord — 32 insurance claims paired with 75% of ZIP codes in FEMA flood zones — points to a flood history where water-quality pathways have likely been periodically relevant.
Concord has a moderate flood history with 32 FEMA claims averaging $117,771 per payout. 75% 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>$2,225</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 Concord
- 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. Filters rated for Total Trihalomethanes (TTHM) can reduce the most common contaminant found in Concord's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- 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 Concord, NH