Gilmanton, WI: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Federal monitoring data for Gilmanton puts the city in WI's lower safety tier — exceedances show up in multiple utility districts, several systems have met thresholds requiring public notification under the Safe Drinking Water Act, and the compliance deficit has persisted across more than one consecutive reporting cycle, with no clear reversal visible in the most recent data available.
How Gilmanton Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Gilmanton Water
- Estimated remediation: $1,200 per household.
- CDC health risk index: 14.16 — above typical levels.
Who Supplies Your Water in Gilmanton
A single dominant system supplies most of Gilmanton, WI. 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 Gilmanton, Wisconsin, covering 1 community water system serving approximately 2,667 people.
No EPA violations recorded across any ZIP codes in Gilmanton — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Gilmanton: D (40/100)
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
Gilmanton water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Gilmanton
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High 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 |
|---|---|---|---|
| 54743 | D | MONDOVI WATERWORKS | 2,667 |
All ZIP Codes in Gilmanton
- 54743 [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 Gilmanton
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 Gilmanton
- 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 Gilmanton, WI