What EPA records show for Southern Okla Water Corp
EPA system ID OK1010830 · serves Carter County, OK · about 11,250 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Southern Okla Water Corp (EPA OK1010830)
What EPA records show for Southern Okla Water Corp, as of October 14, 2026
44 health-standard violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 2.94 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2022–Dec 31, 2024). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 5.
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 Southern Okla Water Corp use chloramine?
We didn't find chloramine in Southern Okla Water Corp's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
Reported results in EPA records (data as of Oct 14–15, 2026)
EPA's UCMR 5 testing looked for 30 contaminants here and found 5.
Lithium: found in 18 of 26 samples, average 19.4 µg/L, highest 46.4 µg/L (EPA UCMR 5 testing, Dec 2024–Sep 2025)
6:2 FTS (a PFAS): found in 1 of 26 samples, average 0.40 ppt, highest 11.2 ppt (EPA UCMR 5 testing, Dec 2024–Sep 2025)
PFBA (a PFAS): found in 1 of 26 samples, average 0.20 ppt, highest 6.4 ppt (EPA UCMR 5 testing, Dec 2024–Sep 2025)
PFPeA (a PFAS): found in 1 of 26 samples, average 0.20 ppt, highest 5.2 ppt (EPA UCMR 5 testing, Dec 2024–Sep 2025)
PFHxA (a PFAS): found in 1 of 26 samples, average 0.10 ppt, highest 3.4 ppt (EPA UCMR 5 testing, Dec 2024–Sep 2025)
Lead: 9 in 10 homes tested came in at or below 2.94 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2022–Dec 31, 2024). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Apr 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Apr 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jan 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Oct 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard 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-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jul 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Surface Water Treatment Rules, Interim Enhanced Surface Water Treatment Rule, May 2025–Dec 2025 (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2025, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2024, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2023, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Apr 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Apr 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jan 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jan 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jan 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Oct 2021, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Oct 2021, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, CARBON, TOTAL, from Jul 2021, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, TTHM, from Jul 2021, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jul 2021, with no return-to-compliance action in EPA records (EPA SDWIS)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
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