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States → EPA Region 8 — Tribal Water Systems

Community Water System · PWS 085690002

Ethete Water System

Fort Washakie, EPA Region 8 — Tribal Water Systems 82514 - drinking water served from surface water sources to 1,950 people, tracked in EPA SDWIS and UCMR5.

1,950
People served
639
EPA violations
31
Health-based
Untested
UCMR5 result

The verdict

EPA records 639 drinking-water violations at Ethete Water System, 5% of them health-based.

639
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
1,950
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ethete Water System

Ethete Water System is a native american-owned community water system that delivers drinking water to 1,950 residents in Fort Washakie, EPA Region 8 — Tribal Water Systems through 450 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 639 total violations for this system , of which 31 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 598 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is CARBON, TOTAL, recorded in 42 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 8 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,950
Total Violations
639
Health-Based Violations
31
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
450
School/Daycare
No
MCL Violations
4
Monitoring Violations
598
Treatment Tech Violations
27

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL MR 42 2024
TTHM MR 27 2019
Total Haloacetic Acids (HAA5) MR 27 2019
Coliform (TCR) MR 17 2014
Surface Water Treatment Rule TT 16 2020
Nitrate MR 16 2004
cis-1,2-Dichloroethylene MR 13 2017
Xylenes, Total MR 13 2017
DICHLOROMETHANE MR 13 2017
1,1-Dichloroethylene MR 13 2017
trans-1,2-Dichloroethylene MR 13 2017
1,2-Dichloroethane MR 13 2017
1,1,1-Trichloroethane MR 13 2017
1,1,2-Trichloroethane MR 13 2017
Tetrachloroethylene MR 13 2017
CHLOROBENZENE MR 13 2017
Benzene MR 13 2017
Toluene MR 13 2017
Ethylbenzene MR 13 2017
Styrene MR 13 2017
Nitrate-Nitrite MR 13 2019
o-Dichlorobenzene MR 13 2017
p-Dichlorobenzene MR 13 2017
1,2-Dichloropropane MR 13 2017
Trichloroethylene MR 13 2017
1,2,4-Trichlorobenzene MR 13 2017
Vinyl chloride MR 13 2017
Carbon tetrachloride MR 13 2017
Lead and Copper Rule MR 12 2024
Nitrite MR 12 2004

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 Ethete Water System.

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 085690002 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 8 — Tribal Water Systems Drinking Water Authority

EPA Region 8 — Tribal Water Systems'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
2025 Interim Enhanced Surface Water Treatment Rule TT 3 SDWIS / 085690002 / 0300
2024 CARBON, TOTAL MR 42 SDWIS / 085690002 / 2920
2024 Lead and Copper Rule MR 12 SDWIS / 085690002 / 5000
2020 Surface Water Treatment Rule TT 16 SDWIS / 085690002 / 0200
2019 TTHM MR 27 SDWIS / 085690002 / 2950
2019 Total Haloacetic Acids (HAA5) MR 27 SDWIS / 085690002 / 2456
2019 Nitrate-Nitrite MR 13 SDWIS / 085690002 / 1038
2019 Long Term 2 Enhanced Surface Water Treatment Rule TT 8 SDWIS / 085690002 / 0800
2018 Revised Total Coliform Rule MON 1 SDWIS / 085690002 / 8000
2017 cis-1,2-Dichloroethylene MR 13 SDWIS / 085690002 / 2380
2017 Xylenes, Total MR 13 SDWIS / 085690002 / 2955
2017 DICHLOROMETHANE MR 13 SDWIS / 085690002 / 2964
2017 1,1-Dichloroethylene MR 13 SDWIS / 085690002 / 2977
2017 trans-1,2-Dichloroethylene MR 13 SDWIS / 085690002 / 2979
2017 1,2-Dichloroethane MR 13 SDWIS / 085690002 / 2980

How Ethete Water System Compares

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

Metric Ethete Water System EPA Region 8 — Tribal Water Systems avg Federal benchmark
Total violations 639 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 31 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,950 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 8 — Tribal Water Systems.

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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Ethete Water System water safe to drink? ▼
Ethete Water System (PWS ID: 085690002) has 639 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,950 people using Surface Water sources.
How many people does Ethete Water System serve? ▼
Ethete Water System serves 1,950 people in Fort Washakie, EPA Region 8 — Tribal Water Systems. It is a Native American-owned system using Surface Water water sources with 450 service connections.
What type of violations does Ethete Water System have? ▼
Ethete Water System has 639 total violations: 31 health-based violations (MCL exceedances or treatment failures), 598 monitoring/reporting violations, and 27 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ethete Water System water? ▼
No PFAS testing data is available for Ethete Water System under the EPA's UCMR5 monitoring program.
What water source does Ethete Water System use? ▼
Ethete Water System 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.