Clean Water Act discharge permit · NPDES COG591237
MIGHTY ARGO CABLE CAR WWTP, Idaho Springs, CO: NPDES COG591237 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 86Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MIGHTY ARGO CABLE CAR WWTP, held by Mighty Argo Metropolitan District #2, holds NPDES permit COG591237, which discharges to Unnamed Trib To Gilson Gulch To Clear Creek. EPA’s file records it issued March 31, 2026 and expiring December 31, 2031. 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 | MIGHTY ARGO CABLE CAR WWTP |
|---|---|
| Permittee as filed | Mighty Argo Metropolitan District #2 |
| NPDES ID | COG591237 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 31, 2026 |
| Expiration date | December 31, 2031 |
| Address | Idaho Springs, CO 80452 |
| Receiving water | unnamed trib to Gilson Gulch to Clear Creek |
| Subwatershed | City of Idaho Springs-Clear Creek (HUC 101900040207) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 86Pollutants on file
- 86Under a numeric limit
- 45With 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 86 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 18 | 0 | ||
| Nitrogen, inorganic total | 7 | 12 | 0 | ||
| Solids, total suspended | 4 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 12 | 0 | ||
| Nitrogen, ammonia total [as N] | 48 | 9 | 0 | ||
| Chlorine, total residual | 4 | 9 | 0 | ||
| E. coli | 4 | 9 | 0 | ||
| Phosphorus, total [as P] | 4 | 6 | 0 | ||
| Chloride [as Cl] | 3 | 6 | 0 | ||
| Sulfide-hydrogen sulfide [undissociated] | 3 | 6 | 0 | ||
| Methanol, total | 3 | 6 | 0 | ||
| Temperature, water deg. centigrade | 2 | 6 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 6 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Aluminum, total recoverable | 2 | 6 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 6 | 0 | ||
| Zinc, potentially dissolved | 2 | 6 | 0 | ||
| Copper, potentially dissolved | 2 | 6 | 0 | ||
| Cadmium, potentially dissolvd | 2 | 6 | 0 | ||
| Lead, potentially dissolvd | 2 | 6 | 0 | ||
| Nickel, potentially dissolvd | 2 | 6 | 0 | ||
| Selenium, potentially dissolvd | 2 | 6 | 0 | ||
| Solids, total dissolved | 4 | 4 | 0 | ||
| Nitrogen, total [as N] | 1 | 3 | 0 | ||
| Nitrogen, nitrite total [as N] | 1 | 3 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 3 | 0 | ||
| Manganese, dissolved [as Mn] | 1 | 3 | 0 | ||
| Nickel, total recoverable | 1 | 3 | 0 | ||
| Cadmium, total recoverable | 1 | 3 | 0 | ||
| Lead, total recoverable | 1 | 3 | 0 | ||
| Oil and grease | 1 | 3 | 0 | ||
| BOD, 5-day, percent removal | 1 | 3 | 0 | ||
| Solids, suspended percent removal | 1 | 3 | 0 | ||
| Sulfate | 1 | 3 | 0 | ||
| Oil and grease visual | 1 | 3 | 0 | ||
| Silver, potentially dissolved | 2 | 2 | 0 | ||
| Manganese, potentially dissolvd | 2 | 2 | 0 | ||
| Uranium, potentially dissolvd | 2 | 2 | 0 | ||
| Arsenic, total recoverable | 1 | 1 | 0 | ||
| Iron, total recoverable | 1 | 1 | 0 | ||
| Molybdenum, total recoverable | 1 | 1 | 0 | ||
| Arsenic, potentially dissolved | 1 | 1 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 1 | 1 | 0 | ||
| Chromium, trivalent total recoverable | 1 | 1 | 0 | ||
| Mercury, total [low level] | 1 | 1 | 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 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG591237.
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 COG591237.
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.