No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2025.
Serves about 9,450 people (6,123 connections) with surface water from its own intake.
From EPA's record for OK1021509. PurityMap is independent of Coweta PWA.
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41 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.107 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.093 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Haloacetic acids (HAA5) | 0.087 mg/L | 0.060 mg/L | Archived |
| Jul–Sep 2025 | Haloacetic acids (HAA5) | 0.062 mg/L | 0.060 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.14 mg/L | 0.080 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.133 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Haloacetic acids (HAA5) | 0.099 mg/L | 0.060 mg/L | Archived |
| Apr–Jun 2025 | Haloacetic acids (HAA5) | 0.131 mg/L | 0.060 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.135 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Haloacetic acids (HAA5) | 0.119 mg/L | 0.060 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.131 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Haloacetic acids (HAA5) | 0.085 mg/L | 0.060 mg/L | Archived |
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.134 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.139 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2024 | Haloacetic acids (HAA5) | 0.081 mg/L | 0.060 mg/L | Archived |
| Oct–Dec 2024 | Haloacetic acids (HAA5) | 0.118 mg/L | 0.060 mg/L | Archived |
| From August 2024 | Surface Water Treatment Rule | – | – | Archived |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 0.127 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 0.121 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2024 | Haloacetic acids (HAA5) | 0.089 mg/L | 0.060 mg/L | Archived |
| Jul–Sep 2024 | Haloacetic acids (HAA5) | 0.07 mg/L | 0.060 mg/L | Archived |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.095 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.099 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2024 | Total trihalomethanes (TTHM) | 0.094 mg/L | 0.080 mg/L | Archived |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2023 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorohexanesulfonic acid (PFHxS) | 5.5 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorohexanoic acid (PFHxA) | 4.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorobutanoic acid (PFBA) | 6.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoropentanoic acid (PFPeA) | 3.3 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-03-13 to 2023-12-06 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-13 to 2023-12-06 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-13 to 2023-12-06 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-13 to 2023-12-06 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-13 to 2023-12-06 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Coweta PWA's phone number on EPA record is 918-486-8073. Its mailing address is The Honorable Naomi Hogue, Mayor, P.O. Box 850, COWETA, OK 74429.
According to EPA's record, Coweta PWA uses surface water from its own intake.
EPA's record shows 41 health-based violations for Coweta PWA in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting July 2025. EPA also lists 50 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Coweta PWA's latest lead and copper round, which ended in December 2022. The federal action level is 15 µg/L.
PurityMap has no verified website for Coweta PWA. Its phone number on EPA record is 918-486-8073. Its mailing address on EPA record is The Honorable Naomi Hogue, Mayor, P.O. Box 850, COWETA, OK 74429. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.