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Water system · PWSID CA1010030

TRANQUILLITY IRRIGATION DISTRICT

TRANQUILLITY, CA · ~807 people served

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

PWSID

CA1010030

State

California

City

TRANQUILLITY

Population served

807

Primary source

Groundwater

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

48

Violations on record

2

Unaddressed

36

Health-based

26

Enforcement actions

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

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Nov 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2014 Resolved
Monitoring & reporting · Total coliform began Nov 2013 Resolved

Recent enforcement actions

  • State action · SOX Jun 2025
  • State action · SFL Nov 2024
  • State action · SOX Dec 2021
  • State action · SOX Mar 2018
  • State action · SFJ Jan 2018
  • State action · SFL Jul 2015
  • State action · SFL Feb 2015
  • State action · SFL Feb 2015

This profile is built from EPA public records for system CA1010030 — 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.