ASHTABULA COUNTY WATER SYSTEM

JEFFERSON, OH · ~14,757 people served

Check your exact address → JEFFERSON overview

100

Excellent

PurityRadar safety score

PWSID

OH0400803

State

Ohio

City

JEFFERSON

Population served

14,757

Primary source

SWP

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 →

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2005 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Monitoring & reporting · EPA contaminant 1094 began Jan 2004 Resolved

Recent enforcement actions

State action · SIA Nov 2025
State action · SIE Nov 2025
State action · SOX Aug 2020
State action · SIF Jun 2020
State action · SIA Jun 2020
State action · SIE Jun 2020
State action · SOX Feb 2008
State action · SIF Nov 2005

This profile is built from EPA public records for system OH0400803 — 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.