- EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
- PFBA (a PFAS): found in 4 of 4 samples, average 6.5 ppt, highest 7.9 ppt (EPA UCMR 5 testing, Jul 2023–Apr 2024)
- PFPeA (a PFAS): found in 1 of 4 samples, average 0.80 ppt, highest 3.2 ppt (EPA UCMR 5 testing, Jul 2023–Apr 2024)
- Lead, 90th percentile: 2.8 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2021–Dec 31, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
- Health-based violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Jan 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Oct 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Jul 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Apr 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Jan 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Public EPA test results
Can you drink Shawnee tap water? What EPA records show
EPA OK1020504 · serves Pottawatomie County, OK · about 29,990 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Shawnee Municipal Authority (EPA OK1020504)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Shawnee's main utility, Shawnee Municipal Authority: 5 health-based violations since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Shawnee Municipal Authority, as of October 14, 2026
5 health-based violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead, 90th percentile: 2.8 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2021–Dec 31, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Shawnee Municipal Authority use chloramine?
EPA treatment records (state-reported) list chloramines for Shawnee Municipal Authority. EPA record
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)