Clean Water Act discharge permit · NPDES COS000001
DENVER CITY & COUNTY OF, Denver, CO: NPDES COS000001 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
DENVER CITY & COUNTY OF, held by Denver City and County, holds NPDES permit COS000001, which discharges to Sand/Cherry/Bear Creeks/S. Platte R. EPA’s file records it issued January 30, 2009 and expiring February 28, 2014. 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 | DENVER CITY & COUNTY OF |
|---|---|
| Permittee as filed | Denver City and County |
| NPDES ID | COS000001 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Large municipal storm sewer systems |
| Issued | January 30, 2009 |
| Expiration date | February 28, 2014 |
| Address | Denver, CO |
| Receiving water | SAND/CHERRY/BEAR CREEKS/S. PLATTE R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cherry Creek-South Platte River (HUC 101900030304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 0Under a numeric limit
- 26With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Temperature, water deg. centigrade | 0 | 24 | 0 | ||
| Conductivity | 0 | 20 | 0 | ||
| pH | 0 | 20 | 0 | ||
| Solids, total suspended | 0 | 20 | 0 | ||
| Nitrogen, inorganic total | 0 | 20 | 0 | ||
| Phosphorus, total [as P] | 0 | 20 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 20 | 0 | ||
| Chloride [as Cl] | 0 | 20 | 0 | ||
| Iron, total recoverable | 0 | 20 | 0 | ||
| Arsenic, total [as As] | 0 | 20 | 0 | ||
| Manganese, dissolved [as Mn] | 0 | 20 | 0 | ||
| Nickel, total recoverable | 0 | 20 | 0 | ||
| Cadmium, total recoverable | 0 | 20 | 0 | ||
| Lead, total recoverable | 0 | 20 | 0 | ||
| Chromium, total recoverable | 0 | 20 | 0 | ||
| Zinc, potentially dissolved | 0 | 20 | 0 | ||
| Copper, potentially dissolved | 0 | 20 | 0 | ||
| Arsenic, potentially dissolved | 0 | 20 | 0 | ||
| Cadmium, potentially dissolvd | 0 | 20 | 0 | ||
| Iron, potentially dissolvd | 0 | 20 | 0 | ||
| Lead, potentially dissolvd | 0 | 20 | 0 | ||
| Nickel, potentially dissolvd | 0 | 20 | 0 | ||
| Selenium, potentially dissolvd | 0 | 20 | 0 | ||
| Oil and grease | 0 | 20 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 20 | 0 | ||
| E. coli | 0 | 20 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COS000001.
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 COS000001.
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, COS000001.
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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 COS000001 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.