AQUA OHIO - LAWRENCE COUNTY

WESTERVILLE, OH · ~8,130 people served

Check your exact address → WESTERVILLE overview

Excellent

PurityRadar safety score

PWSID

OH4400803

State

Ohio

City

WESTERVILLE

Population served

8,130

Primary source

SWP

Score history

▼ 9 points — the score moved from 100 to 91 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 91

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Jul 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4.2 ppt

limit 4 ppt

Above EPA limit · 1.0×

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2024 Resolved

Monitoring & reporting · Total coliform began Sep 2010 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 1999 Resolved

Recent enforcement actions

State action · SOX Jan 2025
State action · SIF Nov 2024
State action · SIE Nov 2024
State action · SIA Nov 2024
State action · SIF Jun 2011
State action · SOX May 2011
State action · SIE Nov 2010
State action · SIA Nov 2010

This profile is built from EPA public records for system OH4400803 — 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.