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Water system · PWSID OH2504412

COLUMBUS PUBLIC WATER SYSTEM

COLUMBUS, OH · ~1,305,946 people served

Check your exact address → COLUMBUS overview
84
Good
PurityRadar safety score

PWSID

OH2504412

State

Ohio

City

COLUMBUS

Population served

1,305,946

Primary source

Surface water

Score history

▼ 16 points — the score moved from 100 to 84 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 84

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

5.3 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFHxA

18 ppt

limit —

No federal limit

PFBA

17 ppt

limit —

No federal limit

PFPeA

14 ppt

limit —

No federal limit

PFBS

11 ppt

limit —

No federal limit

PFHpA

4.3 ppt

limit —

No federal limit

Violations & enforcement

9

Violations on record

0

Unaddressed

8

Health-based

29

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2016. Official EPA record →

Max contaminant level (MCL) · Nitrate health-based began Jun 2016 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jun 2015 Resolved
Other · EPA contaminant 0800 began Jun 2012 Resolved
Treatment technique · EPA contaminant 0200 health-based began Mar 2007 Resolved
Max contaminant level (MCL) · Nitrate health-based began May 2006 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jun 2000 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jun 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1993 Resolved

Recent enforcement actions

  • State action · SOX Nov 2016
  • State action · SIF Jul 2016
  • State action · SIA Jun 2016
  • State action · SIE Jun 2016
  • State action · SOX Jun 2015
  • State action · SIF Jun 2015
  • State action · SIE Jun 2015
  • State action · SIA Jun 2015

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

10 stations · latest Dec 2024

44.6 · max 223 ug/L · 78

Copper

9 stations · latest Dec 2024

2.73 · max 8.91 ug/L · 62

Arsenic

10 stations · latest Sep 2024

2.38 · max 3.77 ug/L · 60

Atrazine

5 stations · latest Sep 2023

32.4 · max 422 ng/l · 5

Fluoride

5 stations · latest Sep 2023

0.31 · max 0.53 mg/l · 5

Lead

1 station · latest Apr 2024

2.96 · max 3.31 ug/L · 4

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 OH2504412 — 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.