YOSEMITE NPS-HODGDON MEADOW

YOSEMITE NP, CA · ~51 people served

Check your exact address → YOSEMITE NP overview

100

Excellent

PurityRadar safety score

PWSID

CA5510503

State

California

City

YOSEMITE NP

Population served

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed

Other · EPA contaminant 7000 began Jul 2025 Addressed

Monitoring & reporting · Lead & Copper Rule began Jul 2009 Resolved

Treatment technique · EPA contaminant 1022 health-based began Jul 2009 Resolved

Treatment technique · EPA contaminant 1022 health-based began Jan 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2009 Resolved

Treatment technique · Lead & Copper Rule health-based began Jul 2008 Resolved

Other · EPA contaminant 7000 began Jul 2007 Resolved

Monitoring & reporting · Lead & Copper Rule began May 2006 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Recent enforcement actions

State action · SFL Dec 2025
State action · SOX Mar 2010
State action · SFL Nov 2009
State action · SFL Nov 2008
State action · SOX Nov 2007
State action · SFL Nov 2007
State action · SOX May 2007
State action · SFL Jan 2007

This profile is built from EPA public records for system CA5510503 — 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.