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Water system · PWSID OH4900712

LONDON CITY PWS

COLUMBUS, OH · ~10,256 people served

Check your exact address → COLUMBUS overview
100
Excellent
PurityRadar safety score

PWSID

OH4900712

State

Ohio

City

COLUMBUS

Population served

10,256

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

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

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

Lithium

9,500 ppt

limit —

No federal limit

Violations & enforcement

42

Violations on record

2

Unaddressed

15

Health-based

78

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Dec 2024 Unaddressed
Other · EPA contaminant 7000 began Jan 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2023 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Jul 2022 Resolved
Other · EPA contaminant 7000 began Jan 2022 Resolved
Other · EPA contaminant 7000 began Jan 2020 Resolved
Other · EPA contaminant 7000 began Sep 2018 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2012 Resolved

Recent enforcement actions

  • State action · SIA Oct 2025
  • State action · SIE Oct 2025
  • State action · SIA Dec 2024
  • State action · SOX Jun 2024
  • State action · SIA Jan 2024
  • State action · SOX Jul 2023
  • State action · SIA Jul 2023
  • State action · SIE Jul 2023

This profile is built from EPA public records for system OH4900712 — 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.