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Water system · PWSID OK3007402

DEWEY PUBLIC WORKS AUTHORITY

DEWEY, OK · ~3,490 people served

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

PWSID

OK3007402

State

Oklahoma

City

DEWEY

Population served

3,490

Primary source

SWP

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

PFBA

11 ppt

limit —

No federal limit

Violations & enforcement

18

Violations on record

0

Unaddressed

6

Health-based

51

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2026. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Addressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Addressed
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Mar 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2023 Resolved
Monitoring · Lead & Copper Rule began Aug 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2022 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began May 2017 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began May 2017 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began May 2015 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Mar 2026
  • State action · SOX Dec 2025
  • State action · SIA Jul 2025
  • State action · SIA Jul 2025
  • State action · SOX May 2024
  • State action · SIA May 2024
  • State action · SIE May 2024
  • State action · SIA May 2024

This profile is built from EPA public records for system OK3007402 — 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.