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Water system · PWSID CA5200526

HIDDEN HARBOR MARINA & RVP

FREMONT, CA · ~70 people served

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

PWSID

CA5200526

State

California

City

FREMONT

Population served

70

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

8

Violations on record

3

Unaddressed

1

Health-based

1

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2024. 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 Jul 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jul 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2021 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2021 Resolved

Recent enforcement actions

  • State action · SOX Feb 2024

This profile is built from EPA public records for system CA5200526 — 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.