Clean Water Act discharge permit · NPDES COG591155
TRANSPORT COLORADO WWTP, Aurora, CO: NPDES COG591155 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 98Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
TRANSPORT COLORADO WWTP, held by Transport Metro District 1, holds NPDES permit COG591155, which discharges to Crooked Run Draw. EPA’s file records it issued December 14, 2023 and expiring December 31, 2029. 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 | TRANSPORT COLORADO WWTP |
|---|---|
| Permittee as filed | Transport Metro District 1 |
| NPDES ID | COG591155 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 14, 2023 |
| Expiration date | December 31, 2029 |
| Address | Aurora, CO 80137 |
| Receiving water | Crooked Run Draw |
| Subwatershed | Settlement of Manila (HUC 101900030902) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 98Pollutants on file
- 98Under a numeric limit
- 44With 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; the 60 with the most exceedances of 98 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 54 | 0 | ||
| Solids, total suspended | 4 | 36 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 36 | 0 | ||
| Nitrogen, inorganic total | 4 | 27 | 0 | ||
| Phosphorus, total [as P] | 4 | 27 | 0 | ||
| Aluminum, total recoverable | 3 | 27 | 0 | ||
| Nitrogen, ammonia total [as N] | 24 | 18 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 3 | 18 | 0 | ||
| Zinc, potentially dissolved | 3 | 18 | 0 | ||
| Silver, potentially dissolved | 3 | 18 | 0 | ||
| Copper, potentially dissolved | 3 | 18 | 0 | ||
| Cadmium, potentially dissolvd | 3 | 18 | 0 | ||
| Lead, potentially dissolvd | 3 | 18 | 0 | ||
| Nickel, potentially dissolvd | 3 | 18 | 0 | ||
| Selenium, potentially dissolvd | 3 | 18 | 0 | ||
| Uranium, potentially dissolvd | 3 | 18 | 0 | ||
| Chlorine, total residual | 3 | 18 | 0 | ||
| E. coli | 3 | 18 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 18 | 0 | ||
| pH | 2 | 18 | 0 | ||
| Lead, total recoverable | 2 | 18 | 0 | ||
| Arsenic, total recoverable | 3 | 9 | 0 | ||
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | 3 | 9 | 0 | ||
| TU Static Renewal 7-Day Chronic Pimphales promelas | 3 | 9 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 9 | 0 | ||
| Chloride [as Cl] | 2 | 9 | 0 | ||
| Iron, total recoverable | 2 | 9 | 0 | ||
| Nickel, total recoverable | 2 | 9 | 0 | ||
| Cadmium, total recoverable | 2 | 9 | 0 | ||
| Chromium, total recoverable | 2 | 9 | 0 | ||
| Molybdenum, total recoverable | 2 | 9 | 0 | ||
| Arsenic, potentially dissolved | 2 | 9 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 2 | 9 | 0 | ||
| Manganese, potentially dissolvd | 2 | 9 | 0 | ||
| Mercury, total [low level] | 2 | 9 | 0 | ||
| Methanol, total | 2 | 9 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 9 | 0 | ||
| Manganese, dissolved [as Mn] | 1 | 9 | 0 | ||
| Oil and grease | 1 | 9 | 0 | ||
| BOD, 5-day, percent removal | 1 | 9 | 0 | ||
| Solids, suspended percent removal | 1 | 9 | 0 | ||
| Sulfate | 1 | 9 | 0 | ||
| Oil and grease visual | 1 | 9 | 0 | ||
| Sulfide-hydrogen sulfide [undissociated] | 2 | 2 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 2 | 0 | 0 | ||
| Perfluorobutanoic acid (PFBA) | 2 | 0 | 0 | ||
| Perfluorooctanesulfonamide (PFOSA) | 2 | 0 | 0 | ||
| Perfluoropentanoic acid (PFPeA) | 2 | 0 | 0 | ||
| Perfluorohexanoic acid (PFHxA) | 2 | 0 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 2 | 0 | 0 | ||
| Perfluorononanoic acid (PFNA) | 2 | 0 | 0 | ||
| Perfluorodecanoic acid (PFDA) | 2 | 0 | 0 | ||
| Perfluoroundecanoic acid (PFUnA) | 2 | 0 | 0 | ||
| Perfluorododecanoic acid (PFDoA) | 2 | 0 | 0 | ||
| Perfluorotridecanoic acid (PFTrDA) | 2 | 0 | 0 | ||
| Perfluorotetradecanoic acid (PFTeDA) | 2 | 0 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | 2 | 0 | 0 | ||
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | 2 | 0 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | 2 | 0 | 0 | ||
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG591155.
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 COG591155.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 15, 2026.