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Community Water System · PWS WY5601357

Gros Ventre North HOA

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

160
People served
170
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 170 drinking-water violations at Gros Ventre North HOA, 1% of them health-based - above the Wyoming per-system average.

170
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: Gros Ventre North HOA

Gros Ventre North HOA is a private-owned community water system that delivers drinking water to 160 residents in Wilson, Wyoming (Teton County) through 75 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 170 total violations for this system , of which 1 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 167 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Benzene, recorded in 5 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%).

Gros Ventre North HOA's 170 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
170
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
75
County
Teton
School/Daycare
No
MCL Violations
1
Monitoring Violations
167
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Benzene MR 5 2001
1,2-Dichloroethane MR 5 2001
p-Dichlorobenzene MR 5 2001
Trichloroethylene MR 5 2001
Vinyl chloride MR 5 2001
cis-1,2-Dichloroethylene MR 5 2001
1,2-Dichloropropane MR 5 2001
CHLOROBENZENE MR 5 2001
Styrene MR 5 2001
Tetrachloroethylene MR 5 2001
DICHLOROMETHANE MR 5 2001
1,1,2-Trichloroethane MR 5 2001
1,2,4-Trichlorobenzene MR 5 2001
1,1-Dichloroethylene MR 5 2001
Xylenes, Total MR 5 2001
1,1,1-Trichloroethane MR 5 2001
Carbon tetrachloride MR 5 2001
Toluene MR 5 2001
Ethylbenzene MR 5 2001
Lead and Copper Rule MR 5 2022
o-Dichlorobenzene MR 5 2001
trans-1,2-Dichloroethylene MR 5 2001
Nitrate MR 4 2003
Gross Alpha, Excl. Radon and U MR 3 2002
Nitrate-Nitrite MR 2 2001
Combined Uranium MR 2 2002
Radium-228 MR 2 2002
Revised Total Coliform Rule MON 2 2016
Consumer Confidence Rule Other 2 2018
Coliform (TCR) MR 2 1998

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 Gros Ventre North HOA.

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 WY5601357 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
2022 Lead and Copper Rule MR 5 SDWIS / WY5601357 / 5000
2018 Consumer Confidence Rule Other 2 SDWIS / WY5601357 / 7000
2016 Revised Total Coliform Rule MON 2 SDWIS / WY5601357 / 8000
2007 Coliform (TCR) MCL 1 SDWIS / WY5601357 / 3100
2003 Nitrate MR 4 SDWIS / WY5601357 / 1040
2002 Gross Alpha, Excl. Radon and U MR 3 SDWIS / WY5601357 / 4000
2002 Combined Uranium MR 2 SDWIS / WY5601357 / 4006
2002 Radium-228 MR 2 SDWIS / WY5601357 / 4030
2002 Radium-226 MR 2 SDWIS / WY5601357 / 4020
2001 Benzene MR 5 SDWIS / WY5601357 / 2990
2001 1,2-Dichloroethane MR 5 SDWIS / WY5601357 / 2980
2001 p-Dichlorobenzene MR 5 SDWIS / WY5601357 / 2969
2001 Trichloroethylene MR 5 SDWIS / WY5601357 / 2984
2001 Vinyl chloride MR 5 SDWIS / WY5601357 / 2976
2001 cis-1,2-Dichloroethylene MR 5 SDWIS / WY5601357 / 2380

How Gros Ventre North HOA Compares

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

Metric Gros Ventre North HOA Wyoming avg Federal benchmark
Total violations 170 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 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 Gros Ventre North HOA water safe to drink? ▼
Gros Ventre North HOA (PWS ID: WY5601357) has 170 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 Gros Ventre North HOA serve? ▼
Gros Ventre North HOA serves 160 people in Wilson, Wyoming. It is a Private-owned system using Groundwater water sources with 75 service connections.
What type of violations does Gros Ventre North HOA have? ▼
Gros Ventre North HOA has 170 total violations: 1 health-based violations (MCL exceedances or treatment failures), 167 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Gros Ventre North HOA water? ▼
No PFAS testing data is available for Gros Ventre North HOA under the EPA's UCMR5 monitoring program.
What water source does Gros Ventre North HOA use? ▼
Gros Ventre North HOA 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.