Clean Water Act discharge permit · NPDES WY0023442
CANYON VILLAGE WWTF, WY: NPDES WY0023442 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CANYON VILLAGE WWTF, held by National Park Service, holds NPDES permit WY0023442. EPA’s file records it issued September 21, 2020 and expiring September 30, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CANYON VILLAGE WWTF |
|---|---|
| Permittee as filed | National Park Service |
| NPDES ID | WY0023442 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Federal facility |
| Issued | September 21, 2020 |
| Expiration date | September 30, 2025 |
| Issuing agency | WDEQ |
| Address | WY |
| Subwatershed | Cascade Creek-Yellowstone River (HUC 100700010503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 16Under a numeric limit
- 13With a violation of any kind
- 7With 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 | 7 | 21 | 21 | October 31, 2025 | 112% over the limit |
| pH | 2 | 16 | 16 | October 31, 2025 | |
| BOD, 5-day, 20 deg. C | 7 | 11 | 10 | November 30, 2024 | 87% over the limit |
| Chlorine, total residual | 2 | 9 | 9 | April 30, 2025 | 340% over the limit |
| E. coli | 4 | 2 | 2 | October 31, 2022 | 153% over the limit |
| BOD, 5-day, percent removal | 1 | 1 | 1 | August 31, 2024 | 47% over the limit |
| Solids, suspended percent removal | 1 | 1 | 1 | August 31, 2024 | 7% over the limit |
| Nitrogen, ammonia total [as N] | 1 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 | ||
| Solids, total dissolved [TDS] | 1 | 1 | 0 | ||
| Produced water, oil and grease | 1 | 1 | 0 | ||
| Flow | 2 | 0 | 0 | ||
| Temperature, water deg. centigrade | 1 | 0 | 0 | ||
| Duration | 1 | 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 WY0023442.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WY0023442.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 WY0023442 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.