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Water system · PWSID OH2501003

SANITARY DISTRICT #4

COLUMBUS, OH · ~8,575 people served

Check your exact address → COLUMBUS overview
72
Good
PurityRadar safety score

PWSID

OH2501003

State

Ohio

City

COLUMBUS

Population served

8,575

Primary source

SWP

Score history

▼ 28 points — the score moved from 100 to 72 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 72

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

PFOA

Perfluorooctanoic acid

7.2 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxA

22 ppt

limit —

No federal limit

PFBA

17 ppt

limit —

No federal limit

PFPeA

17 ppt

limit —

No federal limit

PFBS

11 ppt

limit —

No federal limit

PFHpA

5.4 ppt

limit —

No federal limit

Violations & enforcement

14

Violations on record

2

Unaddressed

5

Health-based

39

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2026. Official EPA record →

Other · EPA contaminant 7000 began Dec 2025 Unaddressed
Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2012 Resolved
Monitoring & reporting · EPA contaminant 0600 began Oct 2011 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved
Monitoring & reporting · Total coliform began Feb 2007 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2005 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Feb 2026
  • EPA/federal action · EFL Dec 2025
  • State action · SIA Dec 2025
  • State action · SIA Oct 2025
  • State action · SIE Oct 2025
  • State action · SIA Sep 2025
  • State action · SIE Sep 2025
  • State action · SOX Aug 2025

This profile is built from EPA public records for system OH2501003 — 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.