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Moscow, TN Tap Water Quality 2026

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

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

Main Utility: Moscow Water Dept PWSID: TN0000477 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 11.10 ppb, 74% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Moscow earns a C for water quality

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

Lead: 11.10 ppb — 74% of the federal action level
PFAS never sampled at this system
18 violations since 2015, 0 health-based
No violations currently open
Moscow's lead level vs. all Tennessee community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 11.10 ppb — 74% of the federal action level
✓ Lower lead than 0% of Tennessee utilities
Population Served
555
~263 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
18 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
74% of EPA action level
11.10 ppb
Action level: 15 ppb
The 90th-percentile lead result is 11.10 ppb, 74% 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
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Consumer Confidence Rule OTHER — — 2025 Unaddressed
Diquat MONITORING AND REPORTING — 0.02 mg/L 2025 Archived
Endothall MONITORING AND REPORTING — 0.1 mg/L 2025 Archived
Public Notice OTHER — — 2024 Unaddressed
Asbestos MONITORING AND REPORTING — 7 MFL 2022 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Archived
Barium MONITORING AND REPORTING — 2 mg/L 2022 Archived
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2022 Archived
Chromium MONITORING AND REPORTING — 0.1 mg/L 2022 Archived
CYANIDE MONITORING AND REPORTING — 0.2 mg/L 2022 Archived
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2022 Archived
Mercury MONITORING AND REPORTING — 0.002 mg/L 2022 Archived
Nickel MONITORING AND REPORTING — — 2022 Archived
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2022 Archived
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2022 Archived
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2022 Archived
Selenium MONITORING AND REPORTING — 0.05 mg/L 2022 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

18 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 Moscow Water Dept
PWSID TN0000477
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 555
Service connections 263
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Moscow tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 11.10 ppb, 74% of the action level.
Does Moscow 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 Moscow? ▼
Moscow Water Dept (PWSID TN0000477). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-05-29. Inspectors recorded 4 significant deficiencies.

What Should Moscow 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.

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