Payne County Water Quality
Payne County, Oklahoma: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
LithiumSTILLWATER UTILITIES AUTHORITY10 µg/L EPA health reference level (screening, not a legal limit) · US EPA21.6 µg/L
- STILLWATER UTILITIES AUTHORITY21.6 µg/LSample date: 2023-12-04 to 2024-09-03
Perfluorooctanesulfonic acid (PFOS)STILLWATER UTILITIES AUTHORITY4.0 ng/L federal MCL (2024) · US EPA8.6 ng/L
- STILLWATER UTILITIES AUTHORITY8.6 ng/LSample date: 2023-12-04 to 2024-09-03
Perfluorohexanesulfonic acid (PFHxS)STILLWATER UTILITIES AUTHORITY10 ng/L federal MCL (2024) · US EPA6.4 ng/L
- STILLWATER UTILITIES AUTHORITY6.4 ng/LSample date: 2023-12-04 to 2024-09-03
Lead (90th percentile)STILLWATER UTILITIES AUTHORITY15 µg/L federal action level · US EPA2.6 µg/L
- STILLWATER UTILITIES AUTHORITY2.6 µg/LMonitoring period: 2026–2026 (still open)
Perfluorobutanesulfonic acid (PFBS)STILLWATER UTILITIES AUTHORITY2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA3 ng/L
- STILLWATER UTILITIES AUTHORITY3 ng/LSample date: 2023-12-04 to 2024-09-03
Perfluorohexanoic acid (PFHxA)STILLWATER UTILITIES AUTHORITY400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLE4.9 ng/L
- STILLWATER UTILITIES AUTHORITY4.9 ng/LSample date: 2023-12-04 to 2024-09-03
Perfluoropentanoic acid (PFPeA)STILLWATER UTILITIES AUTHORITYNo federal or state limit; shown for transparency4.4 ng/L
- STILLWATER UTILITIES AUTHORITY4.4 ng/LSample date: 2023-12-04 to 2024-09-03
24 PFAS tested, none detected in this systemShow
Tested in this system: STILLWATER UTILITIES AUTHORITY
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorobutanoic acid (PFBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanoic acid (PFOA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 1 city above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in OklahomaLargest water systems
- StillwaterSTILLWATER UTILITIES AUTHORITY · OK102122053,000 served
Frequently asked
How does Payne County tap water compare across cities?
PurityMap ranks 1 city in Payne County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Stillwater's main water system: STILLWATER UTILITIES AUTHORITY · PWSID OK1021220 · Purity Score 47 (Poor) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Payne County cities had a PFAS sample above a 2024 EPA limit?
1 of 1 Payne County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Stillwater (PFOS 8.6 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.
Is there lead in Payne County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Payne County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
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