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FORT WASHAKIE

PWS ID: 085690003 · FORT WASHAKIE, 08 82514

FORT WASHAKIE serves 3,520 people in FORT WASHAKIE, 08 using Surface Water water sources. It has 406 recorded EPA violations, including 31 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (2 compounds found).

Water Quality Snapshot: FORT WASHAKIE

FORT WASHAKIE is a native american-owned community water system that delivers drinking water to 3,520 residents in FORT WASHAKIE, 08 through 1,073 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 406 total violations for this system , of which 31 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 371 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is CARBON, TOTAL, recorded in 26 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 2 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 21.5 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across 08, EPA tracks 160 public water systems serving 144,980 people, with 13,068 cumulative violations and 1,547 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 81.7 violations. FORT WASHAKIE's 406 violations sit above the 08 average. Statewide, 10 of 13 UCMR5-tested systems have reported PFAS detections (76.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

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

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for FORT WASHAKIE.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID 085690003 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

08 Drinking Water Authority

08's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 08 regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Revised Total Coliform Rule MON 1 SDWIS / 085690003 / 8000
2015 Coliform (TCR) MR 25 SDWIS / 085690003 / 3100
2014 Coliform (TCR) MCL 4 SDWIS / 085690003 / 3100
2008 TTHM MR 14 SDWIS / 085690003 / 2950
2008 Total Haloacetic Acids (HAA5) MR 14 SDWIS / 085690003 / 2456
2005 CARBON, TOTAL MR 26 SDWIS / 085690003 / 2920
2005 Surface Water Treatment Rule TT 23 SDWIS / 085690003 / 0200
2005 Interim Enhanced Surface Water Treatment Rule TT 4 SDWIS / 085690003 / 0300
2004 Surface Water Treatment Rule MR 13 SDWIS / 085690003 / 0200
2004 Nitrate MR 5 SDWIS / 085690003 / 1040
2004 Xylenes, Total MR 4 SDWIS / 085690003 / 2955
2004 DICHLOROMETHANE MR 4 SDWIS / 085690003 / 2964
2004 o-Dichlorobenzene MR 4 SDWIS / 085690003 / 2968
2004 p-Dichlorobenzene MR 4 SDWIS / 085690003 / 2969
2004 1,1-Dichloroethylene MR 4 SDWIS / 085690003 / 2977

How FORT WASHAKIE Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric FORT WASHAKIE 08 avg Federal benchmark
Total violations 406 81.7 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 31 9.7 Indicates a contaminant exceeded a federal MCL
PFAS detection 2 compounds 76.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,520 906 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 160 regulated public water systems in 08.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is FORT WASHAKIE water safe to drink? ▼
FORT WASHAKIE (PWS ID: 085690003) has 406 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 3,520 people using Surface Water sources.
How many people does FORT WASHAKIE serve? ▼
FORT WASHAKIE serves 3,520 people in FORT WASHAKIE, 08. It is a Native American-owned system using Surface Water water sources with 1,073 service connections.
What type of violations does FORT WASHAKIE have? ▼
FORT WASHAKIE has 406 total violations: 31 health-based violations (MCL exceedances or treatment failures), 371 monitoring/reporting violations, and 27 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in FORT WASHAKIE water? ▼
Yes. UCMR5 testing detected 2 PFAS compounds in FORT WASHAKIE's water supply: lithium, PFOA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does FORT WASHAKIE use? ▼
FORT WASHAKIE uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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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.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial