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Water system · PWSID NN0436008

Greasewood Springs Community Boarding School BIA

Ganado, AZ · ~720 people served

Check your exact address → Ganado overview
100
Excellent
PurityRadar safety score

PWSID

NN0436008

State

Arizona

City

Ganado

Population served

720

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 2023). Levels in parts per trillion (ppt).

Lithium

187,000 ppt

limit —

No federal limit

Violations & enforcement

103

Violations on record

4

Unaddressed

8

Health-based

98

Enforcement actions

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

Reporting · Lead & Copper Rule began Apr 2025 Unaddressed
Other · EPA contaminant 7500 began Mar 2025 Unaddressed
Other · EPA contaminant 7500 began Oct 2024 Unaddressed
Monitoring & reporting · EPA contaminant 3014 began May 2024 Unaddressed
Monitoring · Lead & Copper Rule began Mar 2025 Resolved
Monitoring · Lead & Copper Rule began Oct 2024 Resolved
Other · EPA contaminant 7000 began Jul 2024 Resolved
Monitoring · Lead & Copper Rule began Feb 2024 Resolved
Reporting · Lead & Copper Rule began Oct 2023 Resolved
Monitoring · Lead & Copper Rule began Aug 2023 Resolved
Reporting · Lead & Copper Rule began Oct 2022 Resolved
Reporting · Lead & Copper Rule began May 2020 Resolved

Recent enforcement actions

  • State action · SFJ Dec 2025
  • State action · SFJ Dec 2025
  • State action · SOX Oct 2025
  • State action · SFJ Aug 2025
  • State action · SFJ Apr 2025
  • State action · SFJ Apr 2025
  • State action · SOX Mar 2025
  • State action · SFJ Mar 2025

This profile is built from EPA public records for system NN0436008 — 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.