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Water system · PWSID CA2010005

YOSEMITE SPRING PARK UTIL CO

COARSEGOLD, CA · ~5,300 people served

Check your exact address → COARSEGOLD overview
20
Action needed
PurityRadar safety score

PWSID

CA2010005

State

California

City

COARSEGOLD

Population served

5,300

Primary source

Groundwater

Score history

▼ 65 points — the score moved from 85 to 20 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 20

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

PFOS

Perfluorooctanesulfonic acid

7.9 ppt

limit 4 ppt

Above EPA limit · 2.0×

PFOA

Perfluorooctanoic acid

7.5 ppt

limit 4 ppt

Above EPA limit · 1.9×

PFHxS

Perfluorohexanesulfonic acid

6.7 ppt

limit 10 ppt

Near EPA limit

Lithium

82,400 ppt

limit —

No federal limit

PFBS

13 ppt

limit —

No federal limit

PFPeA

3.7 ppt

limit —

No federal limit

PFHxA

3.3 ppt

limit —

No federal limit

Violations & enforcement

40

Violations on record

3

Unaddressed

22

Health-based

49

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2023. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Max contaminant level (MCL) · Fluoride health-based began Oct 2022 Resolved
Max contaminant level (MCL) · Fluoride health-based began Jul 2022 Resolved
Max contaminant level (MCL) · Fluoride health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Fluoride health-based began Jan 2022 Resolved
Other · Fluoride began Oct 2021 Resolved
Max contaminant level (MCL) · Fluoride health-based began Oct 2021 Resolved
Other · EPA contaminant 7000 began Jul 2021 Addressed
Other · EPA contaminant 7000 began Jul 2021 Addressed
Other · Fluoride began Jul 2021 Resolved

Recent enforcement actions

  • State action · SOX Apr 2023
  • State action · SOX Apr 2023
  • State action · SOX Apr 2023
  • State action · SOX Apr 2023
  • State action · SFO Apr 2022
  • State action · SFL Mar 2022
  • State action · SFL Jan 2022
  • State action · SOX Oct 2021

This profile is built from EPA public records for system CA2010005 — 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.