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Water system · PWSID 090605004

Grindstone Rancheria

Elk Creek, CA · ~150 people served

Check your exact address → Elk Creek overview
60
Fair
PurityRadar safety score

PWSID

090605004

State

California

City

Elk Creek

Population served

150

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 60 Jun 18, 2026 · score 60

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

793

Violations on record

9

Unaddressed

127

Health-based

899

Enforcement actions

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

Other · EPA contaminant 0800 began Mar 2023 Unaddressed
Other · EPA contaminant 0800 began Mar 2023 Unaddressed
Other · EPA contaminant 0800 began Mar 2023 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Apr 2022 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Mar 2022 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Feb 2022 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Dec 2021 Unaddressed
Treatment technique · Lead & Copper Rule health-based began Feb 2021 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jan 2020 Unaddressed
Monitoring · Lead & Copper Rule began Mar 2025 Resolved
Monitoring · Lead & Copper Rule began Feb 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2025 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Aug 2025
  • EPA/federal action · EOX Aug 2025
  • EPA/federal action · EOX May 2025
  • EPA/federal action · EOX May 2025
  • EPA/federal action · EOX May 2025
  • EPA/federal action · EOX May 2025
  • EPA/federal action · EOX May 2025
  • EPA/federal action · EOX May 2025

This profile is built from EPA public records for system 090605004 — 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.