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Water system · PWSID CA5210001

CITY OF CORNING

CORNING, CA · ~8,244 people served

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

PWSID

CA5210001

State

California

City

CORNING

Population served

8,244

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 May 2023). Levels in parts per trillion (ppt).

Lithium

9,480 ppt

limit —

No federal limit

Violations & enforcement

13

Violations on record

1

Unaddressed

12

Health-based

21

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2004. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Max contaminant level (MCL) · Total coliform health-based began Feb 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1997 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1992 Resolved

Recent enforcement actions

  • State action · SOX Mar 2004
  • State action · SIA Feb 2004
  • State action · SOX Aug 2002
  • State action · SIE Jul 2002
  • State action · SOX Jun 2002
  • State action · SIE May 2002
  • State action · SOX Jul 2000
  • State action · SIA Jul 2000

This profile is built from EPA public records for system CA5210001 — 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.