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Water system · PWSID OH0701516

ST. CLAIRSVILLE, CITY OF PWS

ST. CLAIRSVILLE, OH · ~5,097 people served

Check your exact address → ST. CLAIRSVILLE overview
86
Excellent
PurityRadar safety score

PWSID

OH0701516

State

Ohio

City

ST. CLAIRSVILLE

Population served

5,097

Primary source

Surface water

Score history

▼ 14 points — the score moved from 100 to 86 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 86

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 Oct 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4.9 ppt

limit 4 ppt

Above EPA limit · 1.2×

Violations & enforcement

71

Violations on record

1

Unaddressed

29

Health-based

146

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2025 Unaddressed
Monitoring · Lead & Copper Rule began May 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2024 Resolved
Monitoring · Lead & Copper Rule began Nov 2023 Resolved
Other · EPA contaminant 7500 began Feb 2023 Resolved
Other · EPA contaminant 7500 began Nov 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2022 Resolved
Other · EPA contaminant 7000 began Aug 2022 Resolved
Other · EPA contaminant 7000 began Oct 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2021 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2021 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SIF Dec 2024
  • State action · SOX Dec 2024
  • State action · SIF Oct 2024
  • State action · SIA Oct 2024
  • State action · SIE Oct 2024
  • State action · SIA Oct 2024
  • State action · SIE Oct 2024

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

4 stations · latest Dec 2024

165 · max 2,560 ug/L · 8

Copper

3 stations · latest Dec 2024

8.3 · max 28.2 ug/L · 6

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system OH0701516 — 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.