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Water system · PWSID OK1021503

NOWATA MUNICIPAL AUTHORITY

NOWATA, OK · ~3,971 people served

Check your exact address → NOWATA overview
80
Good
PurityRadar safety score

PWSID

OK1021503

State

Oklahoma

City

NOWATA

Population served

3,971

Primary source

Surface water

Score history

▼ 20 points — the score moved from 100 to 80 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 80

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

PFOS

Perfluorooctanesulfonic acid

5.9 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

4.8 ppt

limit 10 ppt

Below EPA limit

PFHxA

4.4 ppt

limit —

No federal limit

PFPeA

4.1 ppt

limit —

No federal limit

Violations & enforcement

79

Violations on record

0

Unaddressed

46

Health-based

160

Enforcement actions

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

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Dec 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2018 Resolved
Monitoring & reporting · EPA contaminant 0800 began Dec 2017 Resolved
Treatment technique · EPA contaminant 0800 health-based began Dec 2017 Resolved
Monitoring & reporting · EPA contaminant 0800 began Nov 2017 Resolved

Recent enforcement actions

  • State action · SIA Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SFO Dec 2024
  • State action · SIF Feb 2023
  • State action · SIA Mar 2022
  • State action · SOX Aug 2021
  • State action · SOX Aug 2020

This profile is built from EPA public records for system OK1021503 — 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.