Clean Water Act discharge permit · NPDES CO0020320
WINDSOR TOWN OF WWTF, Windsor, CO: NPDES CO0020320 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 31Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
WINDSOR TOWN OF WWTF, held by Windsor Town of, holds NPDES permit CO0020320, which discharges to Cache La Poudre River. EPA’s file records it issued March 10, 2009 and expiring April 30, 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 | WINDSOR TOWN OF WWTF |
|---|---|
| Permittee as filed | Windsor Town of |
| NPDES ID | CO0020320 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 10, 2009 |
| Expiration date | April 30, 2014 |
| Address | Windsor, CO 80550 |
| Receiving water | CACHE LA POUDRE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 101900071005 (HUC 101900071005) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 35Pollutants on file
- 31Under a numeric limit
- 13With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 0 | 26 | 26 | August 31, 2018 | 251% over the limit |
| Cyanide, weak acid, dissociable | 4 | 6 | 3 | June 30, 2017 | 100% over the limit |
| E. coli | 0 | 3 | 3 | January 31, 2018 | 29% over the limit |
| Coliform, fecal general | 0 | 5 | 1 | July 31, 2001 | 71% over the limit |
| Mercury, total [as Hg] | 2 | 5 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 4 | 4 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 4 | 4 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 4 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 4 | 4 | 0 | ||
| Copper, potentially dissolved | 2 | 2 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 1 | 0 | ||
| E. coli, thermotol, MF, MTEC | 2 | 1 | 0 | ||
| Boron, total | 0 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 48 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 0 | 0 | ||
| Solids, total suspended | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Arsenic, total [as As] | 2 | 0 | 0 | ||
| Boron, total [as B] | 2 | 0 | 0 | ||
| Zinc, potentially dissolved | 2 | 0 | 0 | ||
| Silver, potentially dissolved | 2 | 0 | 0 | ||
| Cadmium, potentially dissolvd | 2 | 0 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 2 | 0 | 0 | ||
| Lead, potentially dissolvd | 2 | 0 | 0 | ||
| Manganese, potentially dissolvd | 2 | 0 | 0 | ||
| Nickel, potentially dissolvd | 2 | 0 | 0 | ||
| Selenium, potentially dissolvd | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 2 | 0 | 0 | ||
| Oil and grease | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| Oil and grease visual | 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 CO0020320.
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 CO0020320 there.
Nearby on the register
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- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.