Nolensville-college Grove U.d.
EPA ID: TN0000511 · 32,793 people served · 11 ZIP codes
Throughout five consecutive years of federal water monitoring, Nolensville-college Grove U.d. recorded zero violations — solid performance for a utility serving 32,793 people.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 1 (2021) to 11 (2023). Violation counts have remained relatively steady.
Service Area Map
Coverage area for Nolensville-college Grove U.d. Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Nolensville-college Grove U.d. serves a community with a median household income of $110,202 and an estimated 389,686 residents across its service area.
🌊 Where Does Your Water Come From?
Nolensville-college Grove U.d.'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Williamson County, Tennessee rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 46 detections recorded. 8 exceed federal EPA limits (4 ppt for PFOA/PFOS). 8 exceed state limits.
Comparable Water Systems
Similar-sized systems in Tennessee
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
NOLENSVILLE-COLLEGE GROVE U.D. (EPA ID: TN0000511) is a community water system in Tennessee that serves approximately 32,793 people from surface water sources.
This system provides water to 11 ZIP codes across 10 communities.
Average Home Safety Score: C (58/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 37135 | 0.00617 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TN or modeled from parcel and building-footprint data.
- 37014 — Arrington
- 37027 — Brentwood
- 37046 — College Grove
- 37060 — Eagleville
- 37064 — Franklin
- 37067 — Franklin
- 37129 — Murfreesboro
- 37135 — Nolensville
- 37167 — Smyrna
- 37174 — Spring Hill
- 37179 — Thompsons Station
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Nolensville-college Grove U.d. (TN0000511) on EPA.gov.
Frequently Asked Questions
Is Nolensville-college Grove U.d. water safe to drink?
Based on EPA records, Nolensville-college Grove U.d. has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Nolensville-college Grove U.d. serve?
Nolensville-college Grove U.d. serves approximately 32,793 people across 11 ZIP codes in Tennessee.
Where does Nolensville-college Grove U.d. get its water?
The primary water source is surface water.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from NOLENSVILLE/COLLEGE GROVE UTILITY DISTRICT Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: NOLENSVILLE/COLLEGE GROVE UTILITY DISTRICT Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
The Nolensville/College Grove Utility District sources rated as reasonably susceptible to potential contamination.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment classification and chemical list sourced from NOLENSVILLE/COLLEGE GROVE UTILITY DISTRICT Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
A Lead Service Line Inventory has been completed for our system and is accessible by contacting our office during regular business hours.
Lead Service Line Replacement Tracker
This water utility's lead service line (LSL) replacement program is tracked from public Consumer Confidence Report filings. Email signup notifies subscribers when the utility files an updated replacement plan or progress milestone.
NOLENSVILLE/COLLEGE GROVE UTILITY DISTRICT
ZipCheckup is not affiliated with this water utility. LSL replacement-program data is sourced from public CCR filings published by the utility. Subscription notifications are based on automated parsing of subsequent CCR releases.
Learn more about Lead and Copper Rule replacement requirements →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Nolensville-college Grove U.d. (EPA ID: TN0000511) — request the latest Consumer Confidence Report or ask about specific contaminants.