Clean Water Act discharge permit · NPDES COG591147
STEAMBOAT MOUNTAIN SCHOOL WWTF, Steamboat Springs, CO: NPDES COG591147 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 81Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
STEAMBOAT MOUNTAIN SCHOOL WWTF, held by Steamboat Mountain School Inc, holds NPDES permit COG591147, which discharges to Unnamed Tributary Of Gunn Creek. EPA’s file records it issued October 25, 2023 and expiring December 31, 2028. 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 | STEAMBOAT MOUNTAIN SCHOOL WWTF |
|---|---|
| Permittee as filed | Steamboat Mountain School Inc |
| NPDES ID | COG591147 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 25, 2023 |
| Expiration date | December 31, 2028 |
| Address | Steamboat Springs, CO 80487 |
| Receiving water | unnamed tributary of Gunn Creek |
| Subwatershed | Soda Creek (HUC 140500010408) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 81Pollutants on file
- 81Under a numeric limit
- 81With a violation of any kind
- 12With 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 81 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 24 | 23 | 9 | June 30, 2025 | 567% over the limit |
| Chloride [as Cl] | 1 | 15 | 8 | September 30, 2025 | 526% over the limit |
| E. coli | 2 | 20 | 6 | April 30, 2024 | 3,680% over the limit |
| Solids, total suspended | 4 | 27 | 3 | May 31, 2024 | 63% over the limit |
| Zinc, potentially dissolved | 4 | 17 | 3 | June 30, 2025 | 295% over the limit |
| BOD, 5-day, percent removal | 1 | 10 | 3 | May 31, 2024 | 327% over the limit |
| Solids, suspended percent removal | 1 | 10 | 3 | May 31, 2024 | 633% over the limit |
| Sulfide-hydrogen sulfide [undissociated] | 2 | 17 | 2 | June 30, 2024 | 900% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 35 | 1 | May 31, 2024 | 43% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 25 | 1 | April 30, 2024 | 12% over the limit |
| pH | 2 | 15 | 1 | June 30, 2025 | |
| Nitrogen, inorganic total | 2 | 9 | 1 | June 30, 2025 | 31% over the limit |
| Chlorine, total residual | 2 | 14 | 0 | ||
| Arsenic, total recoverable | 3 | 13 | 0 | ||
| Solids, total dissolved | 4 | 12 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 10 | 0 | ||
| Nitrogen, nitrite total [as N] | 1 | 7 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 7 | 0 | ||
| Oil and grease | 1 | 7 | 0 | ||
| Sulfate | 1 | 7 | 0 | ||
| Oil and grease visual | 1 | 7 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 6 | 0 | ||
| Silver, potentially dissolved | 2 | 6 | 0 | ||
| Cadmium, potentially dissolvd | 2 | 6 | 0 | ||
| Lead, potentially dissolvd | 2 | 6 | 0 | ||
| Manganese, potentially dissolvd | 2 | 6 | 0 | ||
| Nickel, potentially dissolvd | 2 | 6 | 0 | ||
| Selenium, potentially dissolvd | 2 | 6 | 0 | ||
| Mercury, total [low level] | 1 | 5 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 2 | 4 | 0 | ||
| Perfluorobutanoic acid (PFBA) | 2 | 4 | 0 | ||
| Perfluorooctanesulfonamide (PFOSA) | 2 | 4 | 0 | ||
| Perfluoropentanoic acid (PFPeA) | 2 | 4 | 0 | ||
| Perfluorohexanoic acid (PFHxA) | 2 | 4 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 2 | 4 | 0 | ||
| Perfluorononanoic acid (PFNA) | 2 | 4 | 0 | ||
| Perfluorodecanoic acid (PFDA) | 2 | 4 | 0 | ||
| Perfluoroundecanoic acid (PFUnA) | 2 | 4 | 0 | ||
| Perfluorododecanoic acid (PFDoA) | 2 | 4 | 0 | ||
| Perfluorotridecanoic acid (PFTrDA) | 2 | 4 | 0 | ||
| Perfluorotetradecanoic acid (PFTeDA) | 2 | 4 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | 2 | 4 | 0 | ||
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | 2 | 4 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | 2 | 4 | 0 | ||
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | 2 | 4 | 0 | ||
| Perfluorobutanesulfonic acid (PFBS) | 2 | 4 | 0 | ||
| Perfluorodecanesulfonic acid (PFDS) | 2 | 4 | 0 | ||
| Perfluoroheptanesulfonic acid (PFHpS) | 2 | 4 | 0 | ||
| Perfluorohexanesulfonic acid (PFHxS) | 2 | 4 | 0 | ||
| Perfluorooctanesulfonic acid (PFOS) | 2 | 4 | 0 | ||
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | 2 | 4 | 0 | ||
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | 2 | 4 | 0 | ||
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | 2 | 4 | 0 | ||
| Perfluoropentanesulfonic acid (PFPeS) | 2 | 4 | 0 | ||
| Perfluorononanesulfonic acid (PFNS) | 2 | 4 | 0 | ||
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | 2 | 4 | 0 | ||
| Perfluoro-2-methoxypropanoic acid | 2 | 4 | 0 | ||
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | 2 | 4 | 0 | ||
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | 2 | 4 | 0 | ||
| Perfluorododecanesulfonic acid (PFDoS) | 2 | 4 | 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 COG591147.
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 15, 2026.