Clean Water Act discharge permit · NPDES COG588010
HERMOSA SANITATION DISTRICT, Durango, CO: NPDES COG588010 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
HERMOSA SANITATION DISTRICT, held by Hermosa Sanitation District, holds NPDES permit COG588010, which discharges to Animas River. EPA’s file records it issued June 10, 2005 and expiring May 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 | HERMOSA SANITATION DISTRICT |
|---|---|
| Permittee as filed | Hermosa Sanitation District |
| NPDES ID | COG588010 |
| 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 | June 10, 2005 |
| Expiration date | May 31, 2010 |
| Address | Durango, CO 81301 |
| Receiving water | ANIMAS RIVER |
| Subwatershed | Falls Creek (HUC 140801040504) |
| 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
- 15Pollutants on file
- 14Under a numeric limit
- 13With a violation of any kind
- 6With 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, carbonaceous [5 day, 20 C] | 6 | 26 | 6 | March 31, 2019 | 500% over the limit |
| BOD, carbonaceous, percent removal | 1 | 5 | 4 | March 31, 2019 | 80% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 15 | 2 | October 31, 2012 | 41,667% over the limit |
| E. coli | 2 | 11 | 2 | July 31, 2011 | 21% over the limit |
| Chlorine, total residual | 3 | 3 | 2 | May 31, 2016 | 800% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 48 | 1 | January 31, 2007 | 12% over the limit |
| Solids, total dissolved | 4 | 8 | 0 | ||
| Solids, total suspended | 4 | 3 | 0 | ||
| pH | 4 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 2 | 0 | ||
| Plant capacity fact. percent of capacity | 0 | 2 | 0 | ||
| Oil and grease | 1 | 1 | 0 | ||
| Oil and grease visual | 1 | 1 | 0 | ||
| Coliform, fecal general | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 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 COG588010.
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, COG588010.
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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 COG588010 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.