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Community Water System · PWS WY5600092

Superior, Town Of

Superior, Wyoming 82945 - drinking water served from groundwater sources to 336 people, tracked in EPA SDWIS and UCMR5.

336
People served
192
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 192 drinking-water violations at Superior, Town Of, 3% of them health-based - above the Wyoming per-system average.

192
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
336
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Superior, Town Of

Superior, Town Of is a local-owned community water system that delivers drinking water to 336 residents in Superior, Wyoming (Sweetwater County) through 120 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 192 total violations for this system , of which 6 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 171 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 Consumer Confidence Rule, recorded in 12 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%).

Superior, Town Of's 192 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
336
Total Violations
192
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
120
County
Sweetwater
School/Daycare
No
MCL Violations
4
Monitoring Violations
171
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 12 2025
Lead and Copper Rule MR 8 2025
Total Haloacetic Acids (HAA5) MR 6 2021
Mercury MR 6 2020
TTHM MR 6 2021
Arsenic MR 4 2020
Fluoride MR 4 2020
Chromium MR 4 2020
Cadmium MR 4 2020
Nitrate-Nitrite MR 4 2022
Barium MR 4 2020
Selenium MR 4 2020
Diquat MR 3 2020
Nickel MR 2 2020
Antimony, Total MR 2 2020
Beryllium, Total MR 2 2020
1,2,4-Trichlorobenzene MR 2 2020
cis-1,2-Dichloroethylene MR 2 2020
Xylenes, Total MR 2 2020
DICHLOROMETHANE MR 2 2020
Vinyl chloride MR 2 2020
1,1-Dichloroethylene MR 2 2020
trans-1,2-Dichloroethylene MR 2 2020
1,1,1-Trichloroethane MR 2 2020
Carbon tetrachloride MR 2 2020
Tetrachloroethylene MR 2 2020
CHLOROBENZENE MR 2 2020
Ethylbenzene MR 2 2020
Styrene MR 2 2020
ETHYLENE DIBROMIDE MR 2 2020

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 Superior, 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 WY5600092 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
2025 Consumer Confidence Rule Other 12 SDWIS / WY5600092 / 7000
2025 Lead and Copper Rule MR 8 SDWIS / WY5600092 / 5000
2025 Lead and Copper Rule TT 2 SDWIS / WY5600092 / 5000
2022 Nitrate-Nitrite MR 4 SDWIS / WY5600092 / 1038
2021 Total Haloacetic Acids (HAA5) MR 6 SDWIS / WY5600092 / 2456
2021 TTHM MR 6 SDWIS / WY5600092 / 2950
2020 Mercury MR 6 SDWIS / WY5600092 / 1035
2020 Arsenic MR 4 SDWIS / WY5600092 / 1005
2020 Fluoride MR 4 SDWIS / WY5600092 / 1025
2020 Chromium MR 4 SDWIS / WY5600092 / 1020
2020 Cadmium MR 4 SDWIS / WY5600092 / 1015
2020 Barium MR 4 SDWIS / WY5600092 / 1010
2020 Selenium MR 4 SDWIS / WY5600092 / 1045
2020 Diquat MR 3 SDWIS / WY5600092 / 2032
2020 Nickel MR 2 SDWIS / WY5600092 / 1036

How Superior, Town Of Compares

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

Metric Superior, Town Of Wyoming avg Federal benchmark
Total violations 192 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 336 835 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 Superior, Town Of water safe to drink? ▼
Superior, Town Of (PWS ID: WY5600092) has 192 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 336 people using Groundwater sources.
How many people does Superior, Town Of serve? ▼
Superior, Town Of serves 336 people in Superior, Wyoming. It is a Local-owned system using Groundwater water sources with 120 service connections.
What type of violations does Superior, Town Of have? ▼
Superior, Town Of has 192 total violations: 6 health-based violations (MCL exceedances or treatment failures), 171 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Superior, Town Of water? ▼
No PFAS testing data is available for Superior, Town Of under the EPA's UCMR5 monitoring program.
What water source does Superior, Town Of use? ▼
Superior, 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.