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Water system · PWSID OK1021202

PONCA CITY MUN WATER

PONCA CITY, OK · ~27,155 people served

Check your exact address → PONCA CITY overview
73
Good
PurityRadar safety score

PWSID

OK1021202

State

Oklahoma

City

PONCA CITY

Population served

27,155

Primary source

Surface water

Score history

▼ 27 points — the score moved from 100 to 73 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 73

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 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

7.1 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxS

Perfluorohexanesulfonic acid

4.7 ppt

limit 10 ppt

Below EPA limit

Lithium

19,100 ppt

limit —

No federal limit

PFBS

3.8 ppt

limit —

No federal limit

9Cl-PF3ONS

3.4 ppt

limit —

No federal limit

Violations & enforcement

26

Violations on record

0

Unaddressed

9

Health-based

84

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2023 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2017 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2015 Resolved
Monitoring & reporting · EPA contaminant 3014 began Sep 2015 Resolved
Monitoring & reporting · EPA contaminant 3014 began Mar 2015 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2014 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2014 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2013 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2013 Resolved
Treatment technique · EPA contaminant 0300 health-based began Apr 2011 Resolved
Monitoring & reporting · Total coliform began May 2009 Resolved

Recent enforcement actions

  • State action · SFH Aug 2024
  • State action · SIF Jun 2024
  • State action · SOX May 2024
  • State action · SIE Mar 2024
  • State action · SIA Mar 2024
  • State action · SOX Sep 2017
  • State action · SIA Aug 2017
  • State action · SIE Aug 2017

This profile is built from EPA public records for system OK1021202 — 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.