KNOX COUNTY WATER AND WASTEWATER PWS

MOUNT VERNON, OH · ~7,710 people served

Check your exact address → MOUNT VERNON overview

100

Excellent

PurityRadar safety score

PWSID

OH4202012

State

Ohio

City

MOUNT VERNON

Population served

7,710

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Other · EPA contaminant 7000 began Nov 2025 Unaddressed

Other · EPA contaminant 7000 began Sep 2022 Unaddressed

Other · EPA contaminant 7000 began Nov 2020 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2013 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2013 Resolved

Monitoring & reporting · Total coliform began May 2004 Resolved

Recent enforcement actions

State action · SIA Nov 2025
State action · SIA Sep 2022
State action · SOX Dec 2020
State action · SIA Nov 2020
State action · SOX Sep 2014
State action · SIF Jun 2014
State action · SIA Nov 2013
State action · SIE Nov 2013

This profile is built from EPA public records for system OH4202012 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.