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FORT WASHAKIE

PWS ID: 085690003 · FORT WASHAKIE, 08 82514

PFAS Detected

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

Population Served
3,520
Total Violations
406
Health-Based Violations
31
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
1,073
School/Daycare
No
MCL Violations
4
Monitoring Violations
371
Treatment Tech Violations
27

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL MR 26 2005
Coliform (TCR) MR 25 2015
Surface Water Treatment Rule TT 23 2005
TTHM MR 14 2008
Total Haloacetic Acids (HAA5) MR 14 2008
Surface Water Treatment Rule MR 13 2004
Barium MR 5 2002
Cadmium MR 5 2002
Selenium MR 5 2002
Nitrate MR 5 2004
Fluoride MR 5 2002
Mercury MR 5 2002
Asbestos MR 5 2002
2,4,5-TP MR 5 2002
Chromium MR 5 2002
Arsenic MR 5 2002
Nickel MR 4 2002
Antimony, Total MR 4 2002
Beryllium, Total MR 4 2002
Xylenes, Total MR 4 2004
DICHLOROMETHANE MR 4 2004
o-Dichlorobenzene MR 4 2004
p-Dichlorobenzene MR 4 2004
1,1-Dichloroethylene MR 4 2004
1,2-Dichloroethane MR 4 2004
1,1,1-Trichloroethane MR 4 2004
1,2-Dichloropropane MR 4 2004
Trichloroethylene MR 4 2004
1,1,2-Trichloroethane MR 4 2004
Tetrachloroethylene MR 4 2004

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 300 samples detected PFAS.

Contaminant Date Result MRL Status
PFEESA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/11/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFBA 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/11/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFUnA 9/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
NEtFOSAA 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/11/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 9/11/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/11/2024 <9 µg/L 9 µg/L Not Detected
PFOS 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 9/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFOS 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 9/11/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFHxS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 9/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/11/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 9/11/2024 <0.007 µg/L 0.007 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.