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Mount Vernon, IN Tap Water Quality 2026

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

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

Main Utility: Mount Vernon Water Works PWSID: IN5265006 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS was detected below the federal limit.

A

Mount Vernon earns an A for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS detected below the federal limit
17 violations since 2015, 0 health-based
No violations currently open
Mount Vernon's lead level vs. all Indiana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Indiana utilities
Population Served
6462
~2400 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
17 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
TTHM MONITORING AND REPORTING — 0.080 mg/L 2026 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2026 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2016 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2016 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2016 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2016 Resolved
LASSO MONITORING AND REPORTING — — 2016 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2015 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2015 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2015 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2015 Resolved
LASSO MONITORING AND REPORTING — — 2015 Resolved
Consumer Confidence Rule OTHER — — 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

17 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 Mount Vernon Water Works
PWSID IN5265006
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 6,462
Service connections 2,400
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Mount Vernon tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Mount Vernon water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Mount Vernon? ▼
Mount Vernon Water Works (PWSID IN5265006). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2024-08-16. No significant deficiencies were recorded.

What Should Mount Vernon 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.

Nearby Cities in Indiana

Poseyville, In Tap Water Quality 2026 Posey New Harmony, In Tap Water Quality 2026 Posey Cynthiana, In Tap Water Quality 2026 Posey