States ›Tennessee ›Williamson County ›Nolensville

Nolensville, TN Tap Water Quality 2026

Water quality report for Nolensville, TN — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Nolensville's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Nolensville-College Grove U.d. PWSID: TN0000511 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 6.17 ppb, 41% of the action level and no violations are open. PFAS was sampled but not enough times for a compliance determination.

C

Nolensville earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 6.17 ppb — 41% of the federal action level
PFAS sampled, too few results to judge
1 violations since 2015, 1 health-based
No violations currently open
Nolensville's lead level vs. all Tennessee community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 6.17 ppb — 41% of the federal action level
✓ Lower lead than 2% of Tennessee utilities
Population Served
13422
~11944 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
1 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
41% of EPA action level
6.17 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
135.4% of EPA action level
1,760 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 6.17 ppb, 41% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Nolensville-College Grove U.d.
PWSID TN0000511
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 13,422
Service connections 11,944
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Nolensville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 6.17 ppb, 41% of the action level.
Does Nolensville water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Nolensville? ▼
Nolensville-College Grove U.d. (PWSID TN0000511), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2026-03-19. No significant deficiencies were recorded.

What Should Nolensville Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Tennessee

Franklin, Tn Tap Water Quality 2026 Williamson Spring Hill, Tn Tap Water Quality 2026 Williamson Brentwood, Tn Tap Water Quality 2026 Williamson Fairview, Tn Tap Water Quality 2026 Williamson Thompson's Station, Tn Tap Water Quality 2026 Williamson