Nelson, NH Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Water systems serving Nelson record elevated violation rates against NH benchmarks — residents in affected areas may want to check their local system's current compliance status.
How Nelson Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Nelson Residents
- Homes built before 1986: 63% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 12.22 — above typical levels.
Nelson's Water Providers
A single dominant system supplies most of Nelson, NH. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Nelson, New Hampshire, covering 1 community water system serving approximately 720 people.
No EPA violations recorded across any ZIP codes in Nelson — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Nelson: D (53/100)
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
Nelson water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Nelson
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 03457 | D | MARLBOROUGH WATER WORKS | 750 |
All ZIP Codes in Nelson
- 03457 [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.
Nelson 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
Nelson Infrastructure Age
With 63% 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. Nelson's median build year of 1979 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 Nelson 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.
How Remediation Costs Compare in Nelson
Because property values in Nelson comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Nelson are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 4% below the New Hampshire average.
Nelson: 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.
Even where utility-side monitoring meets Lead and Copper Rule requirements, the 63% pre-rule share in Nelson keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Nelson
- 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 63% 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 Nelson, NH