Clean Water Act discharge permit · NPDES CO0024082
DURANGO CITY OF, Durango, CO: NPDES CO0024082 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
DURANGO CITY OF, held by Durango City of, holds NPDES permit CO0024082, which discharges to Animas River. EPA’s file records it issued January 17, 2013 and expiring February 28, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | DURANGO CITY OF |
|---|---|
| Permittee as filed | Durango City of |
| NPDES ID | CO0024082 |
| 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 | January 17, 2013 |
| Expiration date | February 28, 2018 |
| Address | Durango, CO 81301 |
| Receiving water | ANIMAS RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Basin Creek-Animas River (HUC 140801040901) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 58Pollutants on file
- 21Under a numeric limit
- 56With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 15 | 3 | July 31, 2015 | 49% over the limit |
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 2 | 4 | 3 | September 30, 2024 | 81% over the limit |
| Nitrogen, ammonia total [as N] | 60 | 8 | 2 | February 28, 2022 | 23% over the limit |
| Coliform, fecal general | 0 | 9 | 1 | June 30, 2002 | 5% over the limit |
| Cyanide, weak acid, dissociable | 0 | 8 | 1 | September 30, 2006 | 967% over the limit |
| E. coli | 4 | 1 | 1 | July 31, 2015 | 19% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 20 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 16 | 0 | ||
| Solids, total dissolved | 8 | 12 | 0 | ||
| Silver, potentially dissolved | 0 | 10 | 0 | ||
| Chlorine, total residual | 6 | 6 | 0 | ||
| pH | 4 | 6 | 0 | ||
| Aluminum, potentially dissolvd | 0 | 5 | 0 | ||
| Solids, suspended percent removal | 2 | 4 | 0 | ||
| Oil and grease visual | 2 | 4 | 0 | ||
| Iron, total recoverable | 0 | 4 | 0 | ||
| Cadmium, potentially dissolvd | 0 | 4 | 0 | ||
| Lead, potentially dissolvd | 0 | 4 | 0 | ||
| Chromium, trivalent total recoverable | 0 | 4 | 0 | ||
| Lead, total recoverable | 0 | 3 | 0 | ||
| Manganese, potentially dissolvd | 0 | 3 | 0 | ||
| Selenium, potentially dissolvd | 0 | 3 | 0 | ||
| BOD, carbonaceous, percent removal | 0 | 3 | 0 | ||
| Mercury, total [as Hg] | 4 | 2 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 2 | 0 | ||
| Manganese, dissolved [as Mn] | 1 | 2 | 0 | ||
| Oil and grease | 1 | 2 | 0 | ||
| Iron, dissolved [as Fe] | 0 | 2 | 0 | ||
| Selenium, total [as Se] | 0 | 2 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 2 | 0 | ||
| Zinc, potentially dissolved | 0 | 2 | 0 | ||
| Copper, potentially dissolved | 0 | 2 | 0 | ||
| Arsenic, potentially dissolved | 0 | 2 | 0 | ||
| Nickel, potentially dissolvd | 0 | 2 | 0 | ||
| Arsenic, total recoverable | 4 | 1 | 0 | ||
| Sulfide-hydrogen sulfide [undissociated] | 2 | 1 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 1 | 0 | ||
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Cyanide, total [as CN] | 0 | 1 | 0 | ||
| Chloride [as Cl] | 0 | 1 | 0 | ||
| Arsenic, total [as As] | 0 | 1 | 0 | ||
| Cadmium, total [as Cd] | 0 | 1 | 0 | ||
| Chromium, total [as Cr] | 0 | 1 | 0 | ||
| Copper, total [as Cu] | 0 | 1 | 0 | ||
| Lead, total [as Pb] | 0 | 1 | 0 | ||
| Molybdenum, total [as Mo] | 0 | 1 | 0 | ||
| Nickel, total [as Ni] | 0 | 1 | 0 | ||
| Nickel, total recoverable | 0 | 1 | 0 | ||
| Silver, total [as Ag] | 0 | 1 | 0 | ||
| Zinc, total [as Zn] | 0 | 1 | 0 | ||
| Cadmium, total recoverable | 0 | 1 | 0 | ||
| Molybdenum, total recoverable | 0 | 1 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 0 | 1 | 0 | ||
| Total phenols | 0 | 1 | 0 | ||
| Phenols | 0 | 1 | 0 | ||
| Sulfate | 0 | 1 | 0 | ||
| Temperature, water deg. centigrade | 4 | 0 | 0 | ||
| Nonylphenol | 4 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 18, 2019 | WW SSO - Improper Operation and Maintenance | ST6 |
| December 18, 2019 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| July 27, 2018 | WW SSO - Discharge to Waters | 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.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.