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Water system · PWSID CA3400128

HAPPY HARBOR (SWS)

ISLETON, CA · ~60 people served

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

PWSID

CA3400128

State

California

City

ISLETON

Population served

60

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

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

13

Violations on record

0

Unaddressed

2

Health-based

25

Enforcement actions

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

Monitoring · Lead & Copper Rule began Oct 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Monitoring & reporting · Arsenic began Jul 2014 Resolved
Monitoring & reporting · Total coliform began Jun 2014 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Total coliform began Jun 2010 Resolved
Monitoring & reporting · Total coliform began May 2010 Resolved
Monitoring & reporting · Total coliform began Apr 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2002 Resolved
Monitoring & reporting · Total coliform began Mar 2000 Resolved

Recent enforcement actions

  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SOX Nov 2023
  • State action · SFM Jan 2018
  • State action · SOX Nov 2015
  • State action · SFL Feb 2015

This profile is built from EPA public records for system CA3400128 — 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.