PlainWater
States → Wyoming

Transient Non-Community Water System · PWS WY5601542

Crooked Creek Guest Ranch

Dubois, Wyoming 82513 - drinking water served from groundwater sources to 123 people, tracked in EPA SDWIS and UCMR5.

123
People served
76
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 76 drinking-water violations at Crooked Creek Guest Ranch, 13% of them health-based - above the Wyoming per-system average.

76
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
123
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Crooked Creek Guest Ranch

Crooked Creek Guest Ranch is a private-owned transient non-community water system that delivers drinking water to 123 residents in Dubois, Wyoming (Fremont County) through 20 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 76 total violations for this system , of which 10 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 64 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 Revised Total Coliform Rule, recorded in 39 violations (MON). 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%).

Crooked Creek Guest Ranch's 76 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
123
Total Violations
76
Health-Based Violations
10
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
20
County
Fremont
School/Daycare
No
MCL Violations
0
Monitoring Violations
64
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 39 2024
Coliform (TCR) MR 16 2015
Groundwater Rule TT 8 2022
Nitrate-Nitrite MR 5 2023
E. COLI MR 2 2023
Revised Total Coliform Rule TT 2 2023
Nitrite MR 2 2022
Groundwater Rule Other 1 2015

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 Crooked Creek Guest Ranch.

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 WY5601542 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 Revised Total Coliform Rule MON 39 SDWIS / WY5601542 / 8000
2023 Nitrate-Nitrite MR 5 SDWIS / WY5601542 / 1038
2023 E. COLI MR 2 SDWIS / WY5601542 / 3014
2023 Revised Total Coliform Rule TT 2 SDWIS / WY5601542 / 8000
2022 Groundwater Rule TT 8 SDWIS / WY5601542 / 0700
2022 Nitrite MR 2 SDWIS / WY5601542 / 1041
2015 Coliform (TCR) MR 16 SDWIS / WY5601542 / 3100
2015 Groundwater Rule Other 1 SDWIS / WY5601542 / 0700

How Crooked Creek Guest Ranch Compares

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

Metric Crooked Creek Guest Ranch Wyoming avg Federal benchmark
Total violations 76 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 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 123 835 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 Crooked Creek Guest Ranch water safe to drink? ▼
Crooked Creek Guest Ranch (PWS ID: WY5601542) has 76 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 123 people using Groundwater sources.
How many people does Crooked Creek Guest Ranch serve? ▼
Crooked Creek Guest Ranch serves 123 people in Dubois, Wyoming. It is a Private-owned system using Groundwater water sources with 20 service connections.
What type of violations does Crooked Creek Guest Ranch have? ▼
Crooked Creek Guest Ranch has 76 total violations: 10 health-based violations (MCL exceedances or treatment failures), 64 monitoring/reporting violations, and 10 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Crooked Creek Guest Ranch water? ▼
No PFAS testing data is available for Crooked Creek Guest Ranch under the EPA's UCMR5 monitoring program.
What water source does Crooked Creek Guest Ranch use? ▼
Crooked Creek Guest Ranch uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.