Official EPA Records
Southern Okla Water Corp
Official EPA contamination & sampling records · Oklahoma, OK
What official records show
Health violations
85
All 85 resolved · Most recent: July 2025
PFAS detected (UCMR 5)
4 analytes
From 754 total monitoring samples · Last: September 2025
Above MCL level (monitoring)
None
No PFAS above EPA MCL thresholds in monitoring data
EPA compliance records for Southern Okla Water Corp (PWSID: OK1010830) in Oklahoma, OK show 85 health-based violations recorded in EPA SDWIS, all resolved and 4 PFAS compounds detected above the minimum reporting level in EPA UCMR 5 monitoring data (most recent sample: September 2025). All records on this page are sourced from EPA SDWIS and the UCMR 5 dataset. This is official monitoring data — not a health risk determination.
Health-Based Violation History
Source: EPA SDWIS (Safe Drinking Water Information System). A health-based violation means a contaminant exceeded the legal Maximum Contaminant Level (MCL) or a required treatment technique was not met during the violation period. Resolved violations indicate the utility returned to compliance.
| Contaminant | Violation date |
|---|---|
| Jul 2025 | |
| Jul 2025 | |
| Jul 2025 | |
Unspecified | May 2025 |
| Apr 2025 | |
| Jan 2025 | |
| Oct 2024 | |
| Oct 2024 | |
| Jul 2024 | |
| Jul 2024 | |
| Apr 2024 | |
| Jan 2024 | |
| Oct 2023 | |
| Jul 2023 | |
| Jul 2023 | |
| Apr 2023 | |
| Apr 2023 | |
| Jan 2023 | |
| Oct 2022 | |
| Jul 2022 | |
| Apr 2022 | |
| Apr 2022 | |
| Jan 2022 | |
| Jan 2022 | |
| Jan 2022 | |
| Jan 2022 | |
| Oct 2021 | |
| Oct 2021 | |
| Jul 2021 | |
Unspecified | Jul 2021 |
| Jul 2021 | |
| Apr 2021 | |
Unspecified | Jan 2021 |
| Jan 2021 | |
Unspecified | Oct 2020 |
| Oct 2020 | |
| Jul 2020 | |
| Apr 2020 | |
| Jan 2020 | |
| Oct 2019 | |
| Oct 2019 | |
| Jul 2019 | |
| Jul 2019 | |
| Apr 2019 | |
| Apr 2019 | |
| Jan 2019 | |
| Jan 2019 | |
| Oct 2018 | |
Unspecified | Oct 2018 |
| Jul 2018 | |
| Jul 2018 | |
| Apr 2018 | |
| Apr 2018 | |
| Jan 2018 | |
| Jan 2018 | |
Unspecified | Jan 2018 |
| Oct 2017 | |
| Oct 2017 | |
| Jul 2017 | |
| Jul 2017 | |
Unspecified | Jun 2017 |
| Apr 2017 | |
| Apr 2017 | |
| Jan 2017 | |
Unspecified | Jan 2017 |
| Jan 2017 | |
Unspecified | Dec 2016 |
| Oct 2016 | |
| Oct 2016 | |
Coliform (TCR) | Aug 2016 |
| Jul 2016 | |
| Jul 2016 | |
| Apr 2016 | |
Unspecified | Apr 2016 |
Unspecified | Apr 2016 |
| Apr 2016 | |
| Jan 2016 | |
| Jan 2016 | |
Unspecified | Dec 2015 |
| Oct 1998 | |
| Jun 1998 | |
| Aug 1995 | |
Unspecified | May 1990 |
Unspecified | Apr 1990 |
Unspecified | Oct 1986 |
Showing 85 health-based violations. View full violation history on EPA ECHO ↗
Official Water Sampling Events (EPA UCMR 5)
EPA UCMR 5 monitoring conducted 19 sampling events at Southern Okla Water Corp (showing most recent 25 of 25+ events). Each event tests water drawn from a designated sampling point for PFAS compounds. Source: EPA Unregulated Contaminant Monitoring Rule 5, 2023–2025.
| Sample date | Compounds tested |
|---|---|
| September 2025 | 29 |
| September 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| June 2025 | 29 |
| March 2025 | 29 |
| March 2025 | 29 |
| January 2025 | 29 |
| December 2024 | 1 |
| December 2024 | 28 |
| December 2024 | 7 |
Sampling events represent distinct official water sample records from EPA UCMR 5. Learn about UCMR 5 methodology ↗
PFAS Compounds Detected (EPA UCMR 5)
Source: EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). These are compounds detected above the minimum reporting level at a sampling point for this utility. A compound marked above MCL was detected at a concentration exceeding the EPA Maximum Contaminant Level finalized in April 2024.
| Compound | Result |
|---|---|
Perfluorobutanoic acid | 6.4 ppt |
6:2 Fluorotelomer sulfonic acid | 11.2 ppt |
Perfluorohexanoic acid | 3.4 ppt |
Perfluoropentanoic acid | 5.2 ppt |
Showing 4 detections above MRL from 754 total UCMR 5 monitoring records. View full PFAS monitoring table →
What this does not mean
- —Violations do not indicate current non-compliance. A health-based violation that is marked resolved means the utility has returned to compliance per EPA records. Historic violations are shown for transparency, not to imply ongoing risk.
- —PFAS detections above MRL are not themselves violations. UCMR 5 monitoring is a surveillance program. Detection does not mean the utility violated a regulation. The 2024 EPA PFAS rule (MCLs for PFOA, PFOS, etc.) has a compliance deadline of 2029.
- —This page does not assess health risk. WaterUtilityReport.com presents official government records — we do not make health risk determinations, safety certifications, or compliance judgments. Consult a licensed water quality specialist or physician for health advice.
- —Records may be incomplete. EPA SDWIS and UCMR 5 represent what was reported to the EPA. Not all utilities or contaminants are covered. Small systems (<10,000 people) may not have been required to participate in UCMR 5 monitoring.
Independent Verification
Get your water tested by a certified lab
EPA compliance data shows what utilities report to regulators. An independent test from a certified laboratory confirms what is actually coming out of your tap at the point of use. Labs in Oklahoma can test for PFAS (EPA Method 533 or 537.1), lead, nitrates, bacteria, and more.
Official Records FAQs
Official Data Sources
EPA SDWIS — Compliance & Violations
EPA ECHO: Southern Okla Water Corp Detailed Facility ReportEPA UCMR 5 — PFAS Monitoring Data
EPA UCMR 5 Program OverviewEPA PFAS Rule (April 2024)
EPA PFAS in Drinking Water RuleRelated pages
Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data