Tilton, NH: 6 Violations — 70/100 (2026)
3 ZIP codes · 5 water systems · Updated 2026-06-03
How does Tilton tap water hold up under EPA scrutiny? Above average for NH — documented violations are uncommon and the safety grade reflects a clean overall record.
How Tilton Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Tilton Water
- Your city's water systems recorded 6 violations in the past 5 years.
- Estimated remediation: $800 per household.
- CDC health risk index: 12.77 — above typical levels.
Who Supplies Your Water in Tilton
Tilton, NH draws its residential water from 3 separate providers among the 5 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 3 ZIP codes in Tilton, New Hampshire, covering 5 community water systems serving approximately 9,046 people.
3 of 3 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Tilton: B (70/100)
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
Tilton water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Tilton
- 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): 3 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 |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 8 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 03276 | C | 2 | 0 | Tilton Northfield Water District |
| 03298 | B | 2 | 0 | Tilton Northfield Water District |
| 03299 | B | 2 | 0 | Tilton Northfield Water District |
All ZIP Codes in Tilton
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 Tilton
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 Tilton Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Tilton Homeowners
Placing remediation in the context of Tilton's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in Tilton are relatively low compared to home values. The $267–$1,400 estimated range is a small fraction of median property value. Home values are 33% below the New Hampshire average.
Flood & Climate Risk in Tilton
Multiple flood events have been recorded for Tilton through the NFIP — 15 claims in total, with 33% of ZIP codes in FEMA-designated zones — pointing to a flood exposure profile that merits inclusion in a water quality assessment without reaching high-severity planning territory.
Tilton has a moderate flood history with 15 FEMA claims averaging $9,335 per payout. 33% 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>$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.
Deep Dive Reports
Detailed analysis for Tilton, NH