Mount Washington, NH Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Systems across Mount Washington show elevated violation counts against NH benchmarks — the low safety grade reflects that ongoing compliance pattern.
How Mount Washington Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Mount Washington Water
- Estimated remediation: $400 per household.
- CDC health risk index: 14.55 — above typical levels.
Who Supplies Your Water in Mount Washington
Water service in Mount Washington, NH is organized around a single utility — one of 1 tracked by regulator, and the one that manages the local distribution network while holding primary responsibility for EPA compliance reporting.
Overview
We track water quality and home safety data for 1 ZIP code in Mount Washington, New Hampshire, covering 1 community water system serving approximately 428 people.
No EPA violations recorded across any ZIP codes in Mount Washington — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mount Washington: 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
Mount Washington water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Mount Washington
- 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 |
|---|---|---|---|
| 03589 | D | W STEWARTSTOWN WATER PCT | 428 |
All ZIP Codes in Mount Washington
- 03589 [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.
Health Outcomes in Mount Washington
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
What You Can Do in Mount Washington
- 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. 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 Mount Washington, NH