C

Columbus, OH

B40/100

Contamination score

Higher = more contaminated vs. other cities.

⚠️3 health-based violations on record.
0
Water sources
29
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

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Reported illness & cancer claims

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Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.

Self-reported issues

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Pollution sources & reported claims near your water

Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.

Critical High Medium Reported claim

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Public water systems

SANITARY DISTRICT #4

PWSID:
OH2501003
Source:
Surface water
Serves:
8,575 people

MID-OHIO WSD WATER DISTRICT 1

PWSID:
OH4901012
Source:
Ground water
Serves:
5,176 people

MID-OHIO WSD PLAIN CITY WTP

PWSID:
OH4901112
Source:
Ground water
Serves:
4,467 people

COLUMBUS PUBLIC WATER SYSTEM

PWSID:
OH2504412
Source:
Surface water
Serves:
1,305,946 people

LONDON CITY PWS

PWSID:
OH4900712
Source:
Ground water
Serves:
10,256 people

EPA & DEP violations

SANITARY DISTRICT #4

PWSID OH25010039 violations

  • Other violation — SANITARY DISTRICT #4

    low severityOpen

    EPA SDWIS violation 8448934 (code 72) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Other violation · Began Dec 10, 2025 · 8 months ago · Source ↗

  • Reporting violation — SANITARY DISTRICT #4

    low severityOpen

    EPA SDWIS violation 8448933 (code 4H) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Reporting violation · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Treatment technique violation — SANITARY DISTRICT #4

    high severityHealth-basedResolved

    EPA SDWIS violation 8448930 (code 2E) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Treatment technique violation · Began Oct 17, 2024 · 1 year ago · Source ↗

  • Reporting violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 8448931 (code 4G) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Reporting violation · Began Oct 17, 2024 · 1 year ago · Source ↗

  • Monitoring violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 8448914 (code 35) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2011 · 14 years ago · Source ↗

  • Other violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 8448913 (code 71) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Other violation · Began Jul 1, 2011 · 15 years ago · Source ↗

  • Monitoring violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 8447506 (code 52) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2005 · 20 years ago · Source ↗

  • Other violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 1512201 (code 72) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Other violation · Began Jul 1, 2001 · 25 years ago · Source ↗

  • Monitoring violation — SANITARY DISTRICT #4

    low severityResolved

    EPA SDWIS violation 1334093 (code 51) at SANITARY DISTRICT #4 (PWSID OH2501003).

    EPA SDWIS · Monitoring violation · Began Jan 1, 1993 · 33 years ago · Source ↗

MID-OHIO WSD WATER DISTRICT 1

PWSID OH49010123 violations

  • Reporting violation — MID-OHIO WSD WATER DISTRICT 1

    low severityOpen

    EPA SDWIS violation 5498421 (code 4H) at MID-OHIO WSD WATER DISTRICT 1 (PWSID OH4901012).

    EPA SDWIS · Reporting violation · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Other violation — MID-OHIO WSD WATER DISTRICT 1

    low severityOpen

    EPA SDWIS violation 5498417 (code 72) at MID-OHIO WSD WATER DISTRICT 1 (PWSID OH4901012).

    EPA SDWIS · Other violation · Began Sep 28, 2023 · 2 years ago · Source ↗

  • Monitoring violation — MID-OHIO WSD WATER DISTRICT 1

    low severityResolved

    EPA SDWIS violation 5498414 (code 3A) at MID-OHIO WSD WATER DISTRICT 1 (PWSID OH4901012).

    EPA SDWIS · Monitoring violation · Began Aug 1, 2019 · 7 years ago · Source ↗

MID-OHIO WSD PLAIN CITY WTP

PWSID OH49011126 violations

  • Other violation — MID-OHIO WSD PLAIN CITY WTP

    low severityOpen

    EPA SDWIS violation 7892454 (code 72) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Other violation · Began Dec 17, 2025 · 7 months ago · Source ↗

  • Reporting violation — MID-OHIO WSD PLAIN CITY WTP

    low severityOpen

    EPA SDWIS violation 7892453 (code 4H) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Reporting violation · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Other violation — MID-OHIO WSD PLAIN CITY WTP

    low severityOpen

    EPA SDWIS violation 7892452 (code 72) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Other violation · Began Jan 5, 2023 · 3 years ago · Source ↗

  • Monitoring violation — MID-OHIO WSD PLAIN CITY WTP

    low severityResolved

    EPA SDWIS violation 7892449 (code 3A) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2021 · 5 years ago · Source ↗

  • Other violation — MID-OHIO WSD PLAIN CITY WTP

    low severityOpen

    EPA SDWIS violation 7892448 (code 72) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Other violation · Began Jan 28, 2020 · 6 years ago · Source ↗

  • Other violation — MID-OHIO WSD PLAIN CITY WTP

    low severityResolved

    EPA SDWIS violation 1521000 (code 71) at MID-OHIO WSD PLAIN CITY WTP (PWSID OH4901112).

    EPA SDWIS · Other violation · Began Jul 1, 2000 · 26 years ago · Source ↗

COLUMBUS PUBLIC WATER SYSTEM

PWSID OH25044122 violations

  • MCL exceedance — COLUMBUS PUBLIC WATER SYSTEM

    high severityHealth-basedResolved

    EPA SDWIS violation 8528519 (code 02) at COLUMBUS PUBLIC WATER SYSTEM (PWSID OH2504412).

    EPA SDWIS · MCL exceedance · Began Jun 1, 2016 · 10 years ago · Source ↗

  • Other violation — COLUMBUS PUBLIC WATER SYSTEM

    low severityResolved

    EPA SDWIS violation 8528511 (code 20) at COLUMBUS PUBLIC WATER SYSTEM (PWSID OH2504412).

    EPA SDWIS · Other violation · Began Jun 12, 2012 · 14 years ago · Source ↗

LONDON CITY PWS

PWSID OH49007129 violations

  • Reporting violation — LONDON CITY PWS

    low severityOpen

    EPA SDWIS violation 8347826 (code 4H) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Reporting violation · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityOpen

    EPA SDWIS violation 8347823 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Dec 20, 2024 · 1 year ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 8347822 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Jan 25, 2024 · 2 years ago · Source ↗

  • Monitoring violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 8347821 (code 34) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Monitoring violation · Began Jul 21, 2023 · 3 years ago · Source ↗

  • MCL exceedance — LONDON CITY PWS

    high severityHealth-basedResolved

    EPA SDWIS violation 8347819 (code 1A) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2022 · 4 years ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 8347820 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Jan 1, 2022 · 4 years ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 8347818 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Jan 21, 2020 · 6 years ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 8347817 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Sep 14, 2018 · 7 years ago · Source ↗

  • Other violation — LONDON CITY PWS

    low severityResolved

    EPA SDWIS violation 1520801 (code 72) at LONDON CITY PWS (PWSID OH4900712).

    EPA SDWIS · Other violation · Began Jul 1, 2001 · 25 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.