Clean Water Act discharge permit · NPDES COG591198
BASALT SANITATION DISTRICT, Basalt, CO: NPDES COG591198 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 96Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
BASALT SANITATION DISTRICT, held by Basalt Sanitation District, holds NPDES permit COG591198, which discharges to Unnamed Wetland/Unnamed Tributary To Roaring Fork. EPA’s file records it issued February 21, 2024 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 | BASALT SANITATION DISTRICT |
|---|---|
| Permittee as filed | Basalt Sanitation District |
| NPDES ID | COG591198 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 21, 2024 |
| Expiration date | December 31, 2028 |
| Address | Basalt, CO 81621 |
| Receiving water | unnamed wetland/unnamed tributary to Roaring Fork |
| Subwatershed | Blue Creek-Roaring Fork River (HUC 140100040802) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 96Pollutants on file
- 96Under a numeric limit
- 7With 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; the 60 with the most exceedances of 96 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 4 | 4 | 4 | June 30, 2025 | |
| Nitrogen, ammonia total [as N] | 96 | 2 | 2 | February 28, 2025 | 221% over the limit |
| Arsenic, total recoverable | 6 | 2 | 2 | December 31, 2025 | 2,200% over the limit |
| Chloride [as Cl] | 4 | 2 | 1 | March 31, 2026 | 13% over the limit |
| Acrylamide | 4 | 16 | 0 | ||
| Sulfide-hydrogen sulfide [undissociated] | 4 | 3 | 0 | ||
| Sulfate | 2 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 0 | 0 | ||
| E. coli | 8 | 0 | 0 | ||
| Solids, total dissolved | 8 | 0 | 0 | ||
| Solids, total suspended | 6 | 0 | 0 | ||
| Iron, total recoverable | 6 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 6 | 0 | 0 | ||
| Manganese, dissolved [as Mn] | 6 | 0 | 0 | ||
| Nickel, total recoverable | 6 | 0 | 0 | ||
| Cadmium, total recoverable | 6 | 0 | 0 | ||
| Lead, total recoverable | 6 | 0 | 0 | ||
| Molybdenum, total recoverable | 6 | 0 | 0 | ||
| Arsenic, potentially dissolved | 6 | 0 | 0 | ||
| Chromium, trivalent, potentially dissolvd | 6 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 6 | 0 | 0 | ||
| Mercury, total [low level] | 6 | 0 | 0 | ||
| Nitrogen, inorganic total | 4 | 0 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 4 | 0 | 0 | ||
| Zinc, potentially dissolved | 4 | 0 | 0 | ||
| Silver, potentially dissolved | 4 | 0 | 0 | ||
| Copper, potentially dissolved | 4 | 0 | 0 | ||
| Cadmium, potentially dissolvd | 4 | 0 | 0 | ||
| Lead, potentially dissolvd | 4 | 0 | 0 | ||
| Manganese, potentially dissolvd | 4 | 0 | 0 | ||
| Nickel, potentially dissolvd | 4 | 0 | 0 | ||
| Selenium, potentially dissolvd | 4 | 0 | 0 | ||
| Chlorine, total residual | 4 | 0 | 0 | ||
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | 4 | 0 | 0 | ||
| TU Static Renewal 7-Day Chronic Pimphales promelas | 4 | 0 | 0 | ||
| Plant capacity fact. percent of capacity | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Oil and grease | 2 | 0 | 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 | ||
| Perfluorobutanesulfonic acid (PFBS) | 2 | 0 | 0 | ||
| Perfluorodecanesulfonic acid (PFDS) | 2 | 0 | 0 | ||
| Perfluoroheptanesulfonic acid (PFHpS) | 2 | 0 | 0 | ||
| Perfluorohexanesulfonic acid (PFHxS) | 2 | 0 | 0 | ||
| Perfluorooctanesulfonic acid (PFOS) | 2 | 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 COG591198.
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.