Clean Water Act discharge permit · NPDES COG590021
ILLIUM VALLEY WWTF, Telluride, CO: NPDES COG590021 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
ILLIUM VALLEY WWTF, held by Illium Park Owners Association, holds NPDES permit COG590021, which discharges to San Miguel River. EPA’s file records it issued July 23, 2021 and expiring March 31, 2026. 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 | ILLIUM VALLEY WWTF |
|---|---|
| Permittee as filed | Illium Park Owners Association |
| NPDES ID | COG590021 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 23, 2021 |
| Expiration date | March 31, 2026 |
| Address | Telluride, CO 81435 |
| Receiving water | San Miguel River |
| Subwatershed | Headwaters San Miguel River (HUC 140300030106) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 13Under a numeric limit
- 13With a violation of any kind
- 1With 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, suspended percent removal | 1 | 7 | 1 | June 30, 2026 | 305% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 120 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 80 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 40 | 0 | ||
| pH | 2 | 40 | 0 | ||
| Solids, total suspended | 4 | 25 | 0 | ||
| Solids, total dissolved | 4 | 25 | 0 | ||
| Oil and grease | 1 | 21 | 0 | ||
| Chlorine, total residual | 1 | 20 | 0 | ||
| BOD, 5-day, percent removal | 1 | 20 | 0 | ||
| Oil and grease visual | 1 | 20 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 14 | 0 | ||
| E. coli | 2 | 12 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 15, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
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, COG590021.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 COG590021 there.
Nearby on the register
- Discharge permits in Telluride
- Every permit record in Telluride, A to Z
- Discharge permits in Colorado
- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.