Clean Water Act discharge permit · NPDES WY0031721
ROUND TOP & SHERARD WTP'S, Cheyenne, WY: NPDES WY0031721 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
ROUND TOP & SHERARD WTP'S, held by Cheyenne Board of Public Utilities, holds NPDES permit WY0031721. EPA’s file records it issued July 7, 2025 and expiring June 30, 2030. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ROUND TOP & SHERARD WTP'S |
|---|---|
| Permittee as filed | Cheyenne Board of Public Utilities |
| NPDES ID | WY0031721 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 7, 2025 |
| Expiration date | June 30, 2030 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | Cheyenne, WY 82009 |
| Subwatershed | Diamond Creek-Crow Creek (HUC 101900090107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 5With a violation of any kind
- 3With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 18 | 119 | 38 | January 31, 2026 | 1,047% over the limit |
| pH | 12 | 61 | 7 | March 31, 2025 | |
| Chlorine, total residual | 6 | 31 | 3 | July 31, 2022 | 445% over the limit |
| Flow, total | 8 | 36 | 0 | ||
| Trichloroethylene | 3 | 9 | 0 | ||
| Duration | 4 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WY0031721.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WY0031721 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.