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Community Water System · PWS WY5600037

Moorcroft, Town Of

Moorcroft, Wyoming 82721 - drinking water served from groundwater sources to 1,009 people, tracked in EPA SDWIS and UCMR5.

1,009
People served
43
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 43 drinking-water violations at Moorcroft, Town Of, 12% of them health-based - above the Wyoming per-system average.

43
Total EPA violations on record
12%
Health-based (MCL / treatment failure)
1,009
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Moorcroft, Town Of

Moorcroft, Town Of is a local-owned community water system that delivers drinking water to 1,009 residents in Moorcroft, Wyoming (Crook County) through 440 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 43 total violations for this system , of which 5 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 26 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 Consumer Confidence Rule, recorded in 8 violations (Other). 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%).

Moorcroft, Town Of's 43 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
1,009
Total Violations
43
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
440
County
Crook
School/Daycare
No
MCL Violations
1
Monitoring Violations
26
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 8 2020
Combined Radium (-226 and -228) MR 5 2020
Gross Alpha, Excl. Radon and U MR 5 2020
Groundwater Rule TT 4 2023
Combined Uranium MR 4 2020
Radium-226 MR 4 2020
Radium-228 MR 4 2020
Lead and Copper Rule MR 3 2021
Coliform (TCR) MR 1 1991
Coliform (TCR) MCL 1 1995

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 Moorcroft, Town Of.

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 WY5600037 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
2023 Groundwater Rule TT 4 SDWIS / WY5600037 / 0700
2021 Lead and Copper Rule MR 3 SDWIS / WY5600037 / 5000
2020 Consumer Confidence Rule Other 8 SDWIS / WY5600037 / 7000
2020 Combined Radium (-226 and -228) MR 5 SDWIS / WY5600037 / 4010
2020 Gross Alpha, Excl. Radon and U MR 5 SDWIS / WY5600037 / 4000
2020 Combined Uranium MR 4 SDWIS / WY5600037 / 4006
2020 Radium-226 MR 4 SDWIS / WY5600037 / 4020
2020 Radium-228 MR 4 SDWIS / WY5600037 / 4030
1995 Coliform (TCR) MCL 1 SDWIS / WY5600037 / 3100
1991 Coliform (TCR) MR 1 SDWIS / WY5600037 / 3100

How Moorcroft, Town Of Compares

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

Metric Moorcroft, Town Of Wyoming avg Federal benchmark
Total violations 43 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 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 1,009 835 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 Moorcroft, Town Of water safe to drink? ▼
Moorcroft, Town Of (PWS ID: WY5600037) has 43 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,009 people using Groundwater sources.
How many people does Moorcroft, Town Of serve? ▼
Moorcroft, Town Of serves 1,009 people in Moorcroft, Wyoming. It is a Local-owned system using Groundwater water sources with 440 service connections.
What type of violations does Moorcroft, Town Of have? ▼
Moorcroft, Town Of has 43 total violations: 5 health-based violations (MCL exceedances or treatment failures), 26 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Moorcroft, Town Of water? ▼
No PFAS testing data is available for Moorcroft, Town Of under the EPA's UCMR5 monitoring program.
What water source does Moorcroft, Town Of use? ▼
Moorcroft, Town Of 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.