Clean Water Act discharge permit · NPDES COG641151
WES BROWN WTF, Adams County, CO: NPDES COG641151 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
WES BROWN WTF, held by Thornton City of, holds NPDES permit COG641151, which discharges to Hoffman Ditch. EPA’s file records it issued July 1, 2013 and expiring September 30, 2015. 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 | WES BROWN WTF |
|---|---|
| Permittee as filed | Thornton City of |
| NPDES ID | COG641151 |
| 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 1, 2013 |
| Expiration date | September 30, 2015 |
| Address | Adams County, CO 80229 |
| Receiving water | Hoffman Ditch |
| Subwatershed | City of Thornton-South Platte River (HUC 101900030402) |
| Other EPA IDs (FRS) | ICIS-AIR source CO0000000800100530 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
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 |
|---|---|---|---|---|---|
| Iron, dissolved [as Fe] | 2 | 3 | 1 | June 30, 2015 | 33% over the limit |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 6 | 6 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 6 | 6 | 0 | ||
| pH | 4 | 6 | 0 | ||
| Ammonia & ammonium- total | 4 | 5 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Manganese, potentially dissolvd | 4 | 4 | 0 | ||
| Chlorine, total residual | 4 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 2 | 0 | ||
| Manganese, dissolved [as Mn] | 3 | 2 | 0 | ||
| Iron, total recoverable | 2 | 2 | 0 | ||
| Oil and grease | 2 | 2 | 0 | ||
| Oil and grease visual | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 30, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 30, 2020 | Monitoring Violations - Invalid/Unrepresentative Sample | 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
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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 COG641151 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.