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States → Oklahoma

CHICKASHA MUNICIPAL AUTHORITY

PWS ID: OK1010821 · CHICKASHA, Oklahoma 73018-2601

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
16,036
Total Violations
265
Health-Based Violations
207
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
7,028
County
Grady
School/Daycare
No
MCL Violations
74
Monitoring Violations
42
Treatment Tech Violations
133

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule TT 68 2023
TTHM MCL 55 2016
Surface Water Treatment Rule TT 34 2021
CARBON, TOTAL TT 30 2007
Coliform (TCR) MR 17 2014
Coliform (TCR) MCL 15 2014
Consumer Confidence Rule Other 7 2023
CARBON, TOTAL MR 6 2014
TTHM MR 6 2015
Total Haloacetic Acids (HAA5) MCL 4 2003
Revised Total Coliform Rule MON 4 2024
Chlorine MR 4 2024
Total Haloacetic Acids (HAA5) MR 4 2009
LEAD AND COPPER RULE REVISIONS TT 1 2024
Nitrate-Nitrite MR 1 2016
LEAD AND COPPER RULE REVISIONS RPT 1 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
6:2 FTS 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/5/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/5/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/5/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 8/5/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFDoA 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 8/5/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFHxS 8/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/5/2025 11.6000 µg/L 9 µg/L Detected
NEtFOSAA 8/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/5/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 5/5/2025 10.7000 µg/L 9 µg/L Detected
PFMBA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/5/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHxS 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/5/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/5/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/5/2025 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 5/5/2025 <0.006 µg/L 0.006 µg/L Not Detected
HFPO-DA 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/5/2025 <0.005 µg/L 0.005 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.