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Hollow Rock, TN Tap Water Quality 2026

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

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

Main Utility: Hollow Rock Water Dept PWSID: TN0000310 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.20 ppb, 1% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Hollow Rock earns a B for water quality

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

Lead: 0.20 ppb — 1% of the federal action level
PFAS never sampled at this system
6 violations since 2015, 0 health-based
No violations currently open
Hollow Rock's lead level vs. all Tennessee community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.20 ppb — 1% of the federal action level
✓ Lower lead than 99% of Tennessee utilities
Population Served
601
~389 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
6 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
1% of EPA action level
0.20 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.20 ppb, 1% 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.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate MONITORING AND REPORTING — 10 mg/L 2025 Archived
Public Notice OTHER — — 2018 Unaddressed
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Archived
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

6 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Hollow Rock Water Dept
PWSID TN0000310
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 601
Service connections 389
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Hollow Rock tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.20 ppb, 1% of the action level.
Does Hollow Rock water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Hollow Rock? ▼
Hollow Rock Water Dept (PWSID TN0000310), one of 3 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-08-12. Inspectors recorded 1 significant deficiency.

What Should Hollow Rock Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
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.

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