PlainWater
States → Wyoming

Community Water System · PWS WY5600737

Squaw Creek Water District

Wilson, Wyoming 83014 - drinking water served from groundwater sources to 160 people, tracked in EPA SDWIS and UCMR5.

160
People served
207
EPA violations
2
Health-based
Untested
UCMR5 result

The verdict

EPA records 207 drinking-water violations at Squaw Creek Water District, 1% of them health-based - above the Wyoming per-system average.

207
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
160
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Squaw Creek Water District

Squaw Creek Water District is a private-owned community water system that delivers drinking water to 160 residents in Wilson, Wyoming (Teton County) through 67 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 207 total violations for this system , of which 2 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 196 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Gross Alpha, Excl. Radon and U, recorded in 8 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Wyoming, EPA tracks 766 public water systems serving 639,288 people, with 32,465 cumulative violations and 4,023 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 42.4 violations. Statewide, 18 of 33 UCMR5-tested systems have reported PFAS detections (54.5%).

Squaw Creek Water District's 207 violations sit above the Wyoming average.

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
160
Total Violations
207
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
67
County
Teton
School/Daycare
No
MCL Violations
0
Monitoring Violations
196
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MR 8 2014
Carbon tetrachloride MR 6 2001
1,1-Dichloroethylene MR 6 2001
p-Dichlorobenzene MR 6 2001
Trichloroethylene MR 6 2001
Vinyl chloride MR 6 2001
1,2-Dichloropropane MR 6 2001
Ethylbenzene MR 6 2001
CHLOROBENZENE MR 6 2001
Styrene MR 6 2001
trans-1,2-Dichloroethylene MR 6 2001
1,1,2-Trichloroethane MR 6 2001
1,2,4-Trichlorobenzene MR 6 2001
Xylenes, Total MR 6 2001
DICHLOROMETHANE MR 6 2001
o-Dichlorobenzene MR 6 2001
Tetrachloroethylene MR 6 2001
Benzene MR 6 2001
cis-1,2-Dichloroethylene MR 6 2001
1,2-Dichloroethane MR 6 2001
1,1,1-Trichloroethane MR 6 2001
Toluene MR 6 2001
Coliform (TCR) MR 6 2010
TTHM MR 5 2018
Total Haloacetic Acids (HAA5) MR 5 2018
Lead and Copper Rule MR 5 2023
Nitrate MR 4 2002
Radium-228 MR 4 2014
Combined Uranium MR 4 2014
Radium-226 MR 4 2014

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 Squaw Creek Water District.

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 WY5600737 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wyoming Drinking Water Authority

Wyoming'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 WY 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
2024 Nitrate-Nitrite MR 3 SDWIS / WY5600737 / 1038
2024 Consumer Confidence Rule Other 2 SDWIS / WY5600737 / 7000
2023 Lead and Copper Rule MR 5 SDWIS / WY5600737 / 5000
2023 Chlorine MR 3 SDWIS / WY5600737 / 0999
2023 Groundwater Rule TT 2 SDWIS / WY5600737 / 0700
2018 TTHM MR 5 SDWIS / WY5600737 / 2950
2018 Total Haloacetic Acids (HAA5) MR 5 SDWIS / WY5600737 / 2456
2016 Revised Total Coliform Rule MON 2 SDWIS / WY5600737 / 8000
2014 Gross Alpha, Excl. Radon and U MR 8 SDWIS / WY5600737 / 4000
2014 Radium-228 MR 4 SDWIS / WY5600737 / 4030
2014 Combined Uranium MR 4 SDWIS / WY5600737 / 4006
2014 Radium-226 MR 4 SDWIS / WY5600737 / 4020
2014 Combined Radium (-226 and -228) MR 3 SDWIS / WY5600737 / 4010
2010 Coliform (TCR) MR 6 SDWIS / WY5600737 / 3100
2010 E. COLI MR 2 SDWIS / WY5600737 / 3014

How Squaw Creek Water District Compares

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

Metric Squaw Creek Water District Wyoming avg Federal benchmark
Total violations 207 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 54.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 160 835 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 766 regulated public water systems in Wyoming.

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 Squaw Creek Water District water safe to drink? ▼
Squaw Creek Water District (PWS ID: WY5600737) has 207 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 160 people using Groundwater sources.
How many people does Squaw Creek Water District serve? ▼
Squaw Creek Water District serves 160 people in Wilson, Wyoming. It is a Private-owned system using Groundwater water sources with 67 service connections.
What type of violations does Squaw Creek Water District have? ▼
Squaw Creek Water District has 207 total violations: 2 health-based violations (MCL exceedances or treatment failures), 196 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Squaw Creek Water District water? ▼
No PFAS testing data is available for Squaw Creek Water District under the EPA's UCMR5 monitoring program.
What water source does Squaw Creek Water District use? ▼
Squaw Creek Water District uses Groundwater 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.