Cheyenne Water Quality
Wyoming
According to EPA SDWIS, Cheyenne, Wyoming is served by 14 community water systems covering about 77,716 people. The same extract lists 12 health-based violation records, most recently coded 8000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Cheyenne, Wyoming is delivered through 14 EPA-regulated community water systems serving an estimated 77,716 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 12 violation records across the 14 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: Revised Total Coliform Rule, Groundwater Rule, Nitrate-Nitrite. 8 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Wyoming drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| CHEYENNE BOARD OF PUBLIC UTILITIES | 64,165 | 0 | Clean |
| SOUTH CHEYENNE WATER & SEWER DISTRICT | 10,000 | 0 | Clean |
| WINCHESTER HILLS | 1,078 | 0 | Clean |
| WEST WINDS | 663 | 0 | Clean |
| BIG COUNTRY ESTATES | 615 | 0 | Clean |
| CIMMARON VILLAGE | 327 | 0 | Clean |
| ORCHARD VALLEY WATER COMPANY | 260 | 2 | Health |
| ENGLEWOOD VILLAGE MHP | 152 | 0 | Clean |
| HIGHLAND RANCH ESTATES | 128 | 0 | Clean |
| HIDE-A-WAY MOBILE VILLAGE | 107 | 3 | Health |
| CARPENTER W&S DISTRICT | 94 | 1 | Health |
| RESTWAY TRAVEL PARK | 62 | 3 | Health |
| EVERGREEN MOBILE HOME PARK | 35 | 2 | Health |
| MILLER LOWER MOBILE HOME PARK | 30 | 1 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| RESTWAY TRAVEL PARK | Revised Total Coliform Rule | 2025-08-01 |
| RESTWAY TRAVEL PARK | Revised Total Coliform Rule | 2025-08-01 |
| CARPENTER W&S DISTRICT | Groundwater Rule | 2023-07-23 |
| ORCHARD VALLEY WATER COMPANY | Groundwater Rule | 2021-07-31 |
| ORCHARD VALLEY WATER COMPANY | Groundwater Rule | 2021-07-31 |
| HIDE-A-WAY MOBILE VILLAGE | Groundwater Rule | 2019-08-10 |
| HIDE-A-WAY MOBILE VILLAGE | Groundwater Rule | 2019-08-10 |
| MILLER LOWER MOBILE HOME PARK | Nitrate-Nitrite | 2018-10-01 |
| RESTWAY TRAVEL PARK | Revised Total Coliform Rule | 2017-06-01 |
| EVERGREEN MOBILE HOME PARK | Revised Total Coliform Rule | 2017-02-25 |
| EVERGREEN MOBILE HOME PARK | Revised Total Coliform Rule | 2016-11-26 |
| HIDE-A-WAY MOBILE VILLAGE | Groundwater Rule | 2014-08-01 |
What are Cheyenne's health-based records for?
Cheyenne's health-based violation records carry 3 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Groundwater Rule | 6 | 3 |
| Revised Total Coliform Rule | 5 | 2 |
| Nitrate-Nitrite | 1 | 1 |
TRI Facilities in Cheyenne
| Facility | Total Releases |
|---|---|
| Dyno Nobel Inc-Cheyenne Plant | 27.1M lbs |
| Cheyenne Renewable Diesel Co LLC | 241.6K lbs |
| Brenntag Pacific Inc. | 5.4K lbs |
| Knife River Cheyenne | 1.2K lbs |
| U.S. Dod Usaf Wyoming Ang | 334 lbs |
| Voestalpine Railway Systems Nortrak Inc. | 78 lbs |
| Ergon Asphalt & Emulsions Inc. - Cheyenne | 14 lbs |
| Crafco Inc. - Cheyenne | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Cheyenne, Wyoming? ▼
How many water violations does Cheyenne have in this EPA extract? ▼
What contaminants were found in Cheyenne water? ▼
How many water systems serve Cheyenne? ▼
Where does Cheyenne get its drinking water? ▼
Are there pollution sources near Cheyenne? ▼
How does Cheyenne compare in Wyoming?
Of the 115 Wyoming places with at least one community water system on file, Cheyenne ranks #3 by number of systems (14).
Either side of it: Gillette (47), Wilson (20), Casper (13), Jackson (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 14 community water systems whose service area lists Cheyenne, ranked against the 115 Wyoming places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.