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Water system · PWSID CA1310006

IMPERIAL, CITY OF

IMPERIAL, CA · ~21,591 people served

Check your exact address → IMPERIAL overview
85
Excellent
PurityRadar safety score

PWSID

CA1310006

State

California

City

IMPERIAL

Population served

21,591

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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 Jul 2025). Levels in parts per trillion (ppt).

Lithium

50,000 ppt

limit —

No federal limit

Violations & enforcement

19

Violations on record

0

Unaddressed

11

Health-based

22

Enforcement actions

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

Reporting · EPA contaminant 5200 began Oct 2024 Addressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Addressed
Other · EPA contaminant 7000 began Jul 2024 Resolved
Treatment technique · EPA contaminant 0200 health-based began May 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2017 Resolved
Monitoring & reporting · EPA contaminant 0800 began Jul 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2017 Resolved
Other · EPA contaminant 7500 began Oct 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2016 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Mar 2026
  • State action · SFL Jul 2024
  • State action · SOX Jul 2024
  • State action · SOX Aug 2018
  • State action · SFL Aug 2018
  • State action · SOX Aug 2018
  • State action · SFL Nov 2017
  • State action · SFJ Oct 2017

This profile is built from EPA public records for system CA1310006 — 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.