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Water system · PWSID CA1710015

HIDDEN VALLEY LAKE CSD

HIDDEN VALLEY LAKE, CA · ~6,235 people served

Check your exact address → HIDDEN VALLEY LAKE overview
100
Excellent
PurityRadar safety score

PWSID

CA1710015

State

California

City

HIDDEN VALLEY LAKE

Population served

6,235

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

Lithium

17,300 ppt

limit —

No federal limit

Violations & enforcement

1

Violations on record

0

Unaddressed

1

Health-based

2

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Oct 2004 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • State action · SFL Nov 2004

This profile is built from EPA public records for system CA1710015 — 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.