- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 3 of 4 samples, average 8.2 µg/L, highest 11.6 µg/L (EPA UCMR 5 testing, Dec 2024–Aug 2025)
- Lead, 90th percentile: 3.75 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, 2022–Dec 31, 2024). 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: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, from Sep 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, from Sep 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, from Aug 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, from Aug 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Aug 2022–Mar 2023 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Sep 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Surface Water Treatment Rule, Sep 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Sep 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Aug 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Aug 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Jul 2021–Jul 2022 (EPA SDWIS)
- Health-based violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, Jul 2021–Jul 2022 (EPA SDWIS)
Public EPA test results
Can you drink Chickasha tap water? What EPA records show
EPA OK1010821 · serves Grady County, OK · about 16,036 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
Chickasha Municipal Authority (EPA OK1010821)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Chickasha's main utility, Chickasha Municipal Authority: 13 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 Chickasha Municipal Authority, as of October 14, 2026
13 health-based violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead, 90th percentile: 3.75 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, 2022–Dec 31, 2024). 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 1.
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 Chickasha Municipal Authority use chloramine?
EPA treatment records (state-reported) list chloramines for Chickasha Municipal Authority. EPA record
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)