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Water system · PWSID NN0436019

Seba Dalkai Boarding School BIA

Winslow, AZ · ~250 people served

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

PWSID

NN0436019

State

Arizona

City

Winslow

Population served

250

Primary source

GWP

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

78

Violations on record

4

Unaddressed

39

Health-based

174

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 Jul 2020 Unaddressed
Other · EPA contaminant 7500 began Oct 2019 Unaddressed
Other · EPA contaminant 7500 began Jul 2019 Unaddressed
Monitoring · Lead & Copper Rule began Feb 2025 Resolved
Reporting · Lead & Copper Rule began Oct 2023 Resolved
Reporting · Lead & Copper Rule began Oct 2022 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2022 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2022 Resolved
Other · EPA contaminant 7500 began Oct 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2021 Resolved

Recent enforcement actions

  • State action · SFJ Dec 2025
  • State action · SOX Mar 2025
  • State action · SOX Sep 2024
  • State action · SOX Sep 2024
  • State action · SOX Sep 2024
  • State action · SOX Sep 2024
  • State action · SOX Sep 2024
  • State action · SOX Sep 2024

This profile is built from EPA public records for system NN0436019 — 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.