Is There PFAS in Coweta Tap Water?
Coweta, OK: PFHxS 5.5 ng/L detected, below EPA's 10 ng/L limit, in 2024 testing. Every PFAS result and filter certifications per compound.
4 of 29 PFAS detected
Each result is read against its own reference. Only PFHxS has a federal limit. PFBA and PFPeA have no federal or state limit and are shown for transparency, not graded.
- PFHxSFederal MCLPerfluorohexanesulfonic acid5.5ng/LDetected, below its limit · limit under EPA review · sampled 2023-08-16 to 2024-10-28Evidence
- PFHxAState MCL · MichiganPerfluorohexanoic acid4.2ng/LDetected, below its state limit · sampled 2023-08-16 to 2024-10-28Evidence
- PFBANo limitPerfluorobutanoic acid6.9ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2023-08-16 to 2024-10-28Evidence - PFPeANo limitPerfluoropentanoic acid3.3ng/L
No federal or state limit: shown for transparency, not graded.
Detected, no limit · sampled 2023-08-16 to 2024-10-28Evidence
- PFOAMCLNot detected
- PFOSMCLNot detected
- PFHxSMCL5.5 ng/L
- PFNAMCLNot detected
- HFPO-DA (GenX)MCLNot detected
- PFHxA4.2 ng/L
- PFBA6.9 ng/L
- PFPeA3.3 ng/L
- 11Cl-PF3OUdSNot detected
- 4:2 FTSNot detected
- 6:2 FTSNot detected
- 8:2 FTSNot detected
- 9Cl-PF3ONSNot detected
- ADONANot detected
- NEtFOSAANot detected
- NFDHANot detected
- NMeFOSAANot detected
- PFBSNot detected
- PFDANot detected
- PFDoANot detected
- PFEESANot detected
- PFHpANot detected
- PFHpSNot detected
- PFMBANot detected
- PFMPANot detected
- PFPeSNot detected
- PFTANot detected
- PFTrDANot detected
- PFUnANot detected
MCL marks the 5 PFAS given a federal limit in EPA's 2024 rule. EPA has proposed rescinding three of those limits; they apply until a final rule.
Results as a table29 results with limit, status, sample date and source
| 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| Perfluorohexanesulfonic acid (PFHxS) | 5.5 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |
| Perfluorohexanoic acid (PFHxA) | 4.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-08-16 to 2024-10-28 | UCMR5 Analytical Results: COWETA PWA (OK1021509) |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) |
| 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) |
PFOS across 764 cities with a detected value
3,396 more were below the lab's 4 ng/L reporting limit and aren't plotted, and 34 have no result on record. 66 cities above 25 ng/L are grouped in the last bar. A position here is not a verdict on the water.
- COWETA PWA's water system as a whole, as reported to EPA UCMR 5.
- 29 PFAS compounds, each with its own result.
- Samples taken 2023-03-13 to 2024-10-28.
- The water at your tap. Building plumbing isn't in this record.
- PFAS not listed in the 29 above were not reported in these records.
- Levels since the last sample have not been published.
Test first, then match a certified method.
A tap test can confirm levels at your home before you choose treatment.
- PFHxA · detected below the limit
- PFHxS · detected below the limit
- PFBA · detected, no federal or state limit
- PFPeA · detected, no federal or state limit
- Reverse osmosisOpen the method →
- Activated carbon (GAC)Open the method →
- Anion exchangeOpen the method →
PFAS filters
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
- Browse, not a match:
- Clearly Filtered Pitcher (lab-tested, not NSF 53 certified)
Frequently asked
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Is there PFAS in Coweta tap water?
In EPA's UCMR 5 testing of COWETA PWA (2023-08-16 to 2024-10-28): PFBA 6.9 ng/L (no federal or state limit), PFHxA 4.2 ng/L (state limit 400,000), PFHxS 5.5 ng/L (limit 10), PFPeA 3.3 ng/L (no federal or state limit) and the other 25 PFAS tested not detected. "Not detected" means below the lab's reporting limit, not proven zero.
What are the federal PFAS limits?
EPA's 2024 drinking-water rule set maximum contaminant levels of 4.0 ng/L for PFOA and for PFOS, and 10 ng/L for PFHxS, PFNA and HFPO-DA (GenX). In May 2026 EPA proposed keeping the PFOA and PFOS limits, with the option of until 2031 to comply, and rescinding the other three. Until a final rule, all five limits apply. Results above them today are above the limits in force.
How do I remove PFAS from my tap water?
Reverse-osmosis systems and filters certified to NSF/ANSI 53 or 58 for PFOA/PFOS reduction are the proven options at the tap. Check the certifier's listing (NSF, WQA or IAPMO) for the exact model, and replace cartridges on schedule.
- UCMR5 Analytical ResultsUCMR5 Analytical Results: COWETA PWA (OK1021509)US EPA · 2026-01-15View source ↗
- State SDWIS Compliance RecordLead & Copper Rule 90th-percentile: COWETA PWA (OK1021509)US EPA SDWIS · 2026-07-09View source ↗