Mountain Home, TN: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Mountain Home, TN water systems: poor compliance record, lower-tier safety grade.
How Mountain Home Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Mountain Home Residents
- Estimated remediation: $1,200 per household.
- CDC health risk index: 14.04 — above typical levels.
Mountain Home's Water Providers
Consolidated water delivery characterizes Mountain Home, TN: among 1 system in federal records, one utility holds the dominant service position — carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.
Overview
We track water quality and home safety data for 1 ZIP code in Mountain Home, Tennessee, covering 1 community water system serving approximately 105,057 people.
No EPA violations recorded across any ZIP codes in Mountain Home — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mountain Home: 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
Mountain Home water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Mountain Home
- 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 |
|---|---|---|---|
| 37684 | D | JOHNSON CITY WATER DEPT | 105,057 |
All ZIP Codes in Mountain Home
- 37684 [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.
Mountain Home 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
What You Can Do in Mountain Home
- 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 Mountain Home, TN