Nolensville, TN: High Radon Risk — 62/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
Safe water is the norm across most of Nolensville, TN — but documented violations push the city to the middle safety tier.
How Nolensville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Nolensville Residents
- Average lead level: 0.0062 mg/L.
- Homes built before 1986: 12% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 11.33.
Nolensville's Water Providers
Water delivery in Nolensville, TN is handled by 3 utilities rather than a single system — drawn from 6 providers in federal records, each filing its own compliance reports and setting its own rates.
Overview
We track water quality and home safety data for 1 ZIP code in Nolensville, Tennessee (population ~23,231), covering 6 community water systems serving approximately 1,162,218 people region-wide.
No EPA violations recorded across any ZIP codes in Nolensville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Nolensville: C (62/100)
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
Nolensville water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0062 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| 37135 | C | Nolensville-college Grove U.d. | 32,793 |
All ZIP Codes in Nolensville
- 37135 [C]
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.
Nolensville 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
Nolensville Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead solder was federally prohibited in new plumbing in 1986. In Nolensville, the median build year of 2018 puts a majority of homes in the lower-risk category for that specific contamination pathway — though the pre-1986 share shown above still carries real exposure potential at the individual household level.
Most homes in Nolensville were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Nolensville
At current valuations, Nolensville sits in the low remediation-share tier — the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Nolensville are relatively low compared to home values. The $2,000–$4,100 estimated range is a small fraction of median property value. Home values are 181% above the Tennessee average.
Nolensville: 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.
Older homes from the pre-rule era make up 12% of Nolensville's inventory, a contained slice. Citywide aggregate readings stay below 0.015 mg/L under EPA Lead and Copper Rule monitoring, suggesting systemic lead is not a dominant local concern. What the aggregate cannot do is reflect conditions inside any single building, where interior plumbing age, water chemistry, and stagnation patterns interact differently than they do across thousands of service connections combined into one figure.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Nolensville: Flood History & Water Damage Risk
Within the NFIP's national dataset, Nolensville falls in moderate-exposure territory — 41 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Nolensville has a moderate flood history with 41 FEMA claims averaging $14,749 per payout. 100% 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>$3,000</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.
What You Can Do in Nolensville
- 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.
Deep Dive Reports
Detailed analysis for Nolensville, TN