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Community Water System · PWS WY5600045

Rawlins Water Supply, City Of

Rawlins, Wyoming 82301 - drinking water served from surface water sources to 9,006 people, tracked in EPA SDWIS and UCMR5.

9,006
People served
72
EPA violations
12
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 72 drinking-water violations at Rawlins Water Supply, City Of, 17% of them health-based - above the Wyoming per-system average.

72
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
9,006
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Rawlins Water Supply, City Of

Rawlins Water Supply, City Of is a local-owned community water system that delivers drinking water to 9,006 residents in Rawlins, Wyoming (Carbon County) through 4,054 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 72 total violations for this system , of which 12 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 46 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 9 violations (Other). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Rawlins Water Supply, City Of's 72 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
9,006
Total Violations
72
Health-Based Violations
12
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
4,054
County
Carbon
School/Daycare
No
MCL Violations
5
Monitoring Violations
46
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 9 2020
Coliform (TCR) MCL 5 2011
Long Term 2 Enhanced Surface Water Treatment Rule TT 4 2023
Interim Enhanced Surface Water Treatment Rule TT 3 2022
Barium MR 2 2023
Fluoride MR 2 2023
Mercury MR 2 2023
Selenium MR 2 2023
Chromium MR 2 2023
Cadmium MR 2 2023
Arsenic MR 2 2023
Gross Alpha, Excl. Radon and U MR 2 1980
1,2,4-Trichlorobenzene MR 1 2023
Xylenes, Total MR 1 2023
p-Dichlorobenzene MR 1 2023
1,1-Dichloroethylene MR 1 2023
trans-1,2-Dichloroethylene MR 1 2023
1,2-Dichloroethane MR 1 2023
1,1,1-Trichloroethane MR 1 2023
Trichloroethylene MR 1 2023
Tetrachloroethylene MR 1 2023
CHLOROBENZENE MR 1 2023
Benzene MR 1 2023
Toluene MR 1 2023
Ethylbenzene MR 1 2023
Antimony, Total MR 1 2023
Nitrate MR 1 1981
Combined Radium (-226 and -228) MR 1 1976
1,1,2-Trichloroethane MR 1 2023
Vinyl chloride MR 1 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
6:2 FTS 9/28/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/28/2023 <20.00 ppt 20.00 ppt Not Detected
PFBS 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/28/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 9/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFDoA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/28/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/28/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 9/28/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 9/28/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/13/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/13/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/13/2024 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/13/2024 <2.00 ppt 2.00 ppt Not Detected
PFTA 8/13/2024 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 8/13/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 8/13/2024 <7.00 ppt 7.00 ppt Not Detected
11Cl-PF3OUdS 8/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 8/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/13/2024 <4.00 ppt 4.00 ppt Not Detected
PFUnA 8/13/2024 <2.00 ppt 2.00 ppt Not Detected
PFOA 8/13/2024 <4.00 ppt 4.00 ppt Not Detected

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 Rawlins Water Supply, City 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 WY5600045 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 Long Term 2 Enhanced Surface Water Treatment Rule TT 4 SDWIS / WY5600045 / 0800
2023 Barium MR 2 SDWIS / WY5600045 / 1010
2023 Fluoride MR 2 SDWIS / WY5600045 / 1025
2023 Mercury MR 2 SDWIS / WY5600045 / 1035
2023 Selenium MR 2 SDWIS / WY5600045 / 1045
2023 Chromium MR 2 SDWIS / WY5600045 / 1020
2023 Cadmium MR 2 SDWIS / WY5600045 / 1015
2023 Arsenic MR 2 SDWIS / WY5600045 / 1005
2023 1,2,4-Trichlorobenzene MR 1 SDWIS / WY5600045 / 2378
2023 Xylenes, Total MR 1 SDWIS / WY5600045 / 2955
2023 p-Dichlorobenzene MR 1 SDWIS / WY5600045 / 2969
2023 1,1-Dichloroethylene MR 1 SDWIS / WY5600045 / 2977
2023 trans-1,2-Dichloroethylene MR 1 SDWIS / WY5600045 / 2979
2023 1,2-Dichloroethane MR 1 SDWIS / WY5600045 / 2980
2023 1,1,1-Trichloroethane MR 1 SDWIS / WY5600045 / 2981

How Rawlins Water Supply, City Of Compares

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

Metric Rawlins Water Supply, City Of Wyoming avg Federal benchmark
Total violations 72 42.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 9,006 835 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 Rawlins Water Supply, City Of water safe to drink?
Rawlins Water Supply, City Of (PWS ID: WY5600045) has 72 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 9,006 people using Surface Water sources.
How many people does Rawlins Water Supply, City Of serve?
Rawlins Water Supply, City Of serves 9,006 people in Rawlins, Wyoming. It is a Local-owned system using Surface Water water sources with 4,054 service connections.
What type of violations does Rawlins Water Supply, City Of have?
Rawlins Water Supply, City Of has 72 total violations: 12 health-based violations (MCL exceedances or treatment failures), 46 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Rawlins Water Supply, City Of water?
No. Rawlins Water Supply, City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Rawlins Water Supply, City Of use?
Rawlins Water Supply, City Of uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.