Clean Water Act discharge permit · NPDES COG589031
SIMLA WWTF, Simla, CO: NPDES COG589031 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
SIMLA WWTF, held by Simla, Town of, holds NPDES permit COG589031, which discharges to Unnmd Trib To Big Sandy Creek. EPA’s file records it issued December 1, 2005 and expiring October 31, 2010. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SIMLA WWTF |
|---|---|
| Permittee as filed | Simla, Town of |
| NPDES ID | COG589031 |
| 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 | December 1, 2005 |
| Expiration date | October 31, 2010 |
| Address | Simla, CO 80835 |
| Receiving water | UNNMD TRIB TO BIG SANDY CREEK |
| Subwatershed | Antelope Creek-Big Sandy Creek (HUC 110200110103) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 13Pollutants on file
- 10Under a numeric limit
- 13With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 10 | 51 | 14 | May 31, 2024 | 117% over the limit |
| BOD, 5-day, percent removal | 1 | 15 | 9 | May 31, 2024 | 83% over the limit |
| E. coli | 0 | 14 | 6 | June 30, 2023 | 99,999% over the limit |
| Chlorine, total residual | 2 | 13 | 3 | June 30, 2013 | 200% over the limit |
| pH | 2 | 14 | 2 | May 31, 2014 | |
| Flow, in conduit or thru treatment plant | 4 | 29 | 1 | January 31, 2023 | 10% over the limit |
| Solids, total suspended | 4 | 21 | 1 | September 30, 2021 | 12% over the limit |
| E. coli, thermotol, MF, MTEC | 2 | 5 | 1 | May 31, 2012 | 75% over the limit |
| Plant capacity fact. percent of capacity | 0 | 12 | 0 | ||
| Coliform, fecal general | 2 | 8 | 0 | ||
| Oil and grease | 1 | 6 | 0 | ||
| Oil and grease visual | 1 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 2 | 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 COG589031.
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, COG589031.
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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 COG589031 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.