Clean Water Act discharge permit · NPDES COG591208

CRESTED BUTTE TOWN OF WWTF, Crested Butte, CO: NPDES COG591208 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
97Pollutants under a numeric limit
1Pollutants with an effluent exceedance

CRESTED BUTTE TOWN OF WWTF, held by Crested Butte Town of, holds NPDES permit COG591208, which discharges to Slate River And East River. EPA’s file records it issued December 31, 2024 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	CRESTED BUTTE TOWN OF WWTF
Permittee as filed	Crested Butte Town of
NPDES ID	COG591208
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 31, 2024
Expiration date	December 31, 2031
Address	Crested Butte, CO 81224
Receiving water	Slate River and East River
Subwatershed	Washington Gulch-Slate River (HUC 140200010206)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

97Pollutants on file
97Under a numeric limit
1With a violation of any kind
1With 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 97 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Temperature, water deg. centigrade	30	1	1	July 31, 2026	2% over the limit
Nitrogen, ammonia total [as N]	37	0	0
BOD, 5-day, 20 deg. C	6	0	0
Solids, total suspended	4	0	0
Zinc, potentially dissolved	4	0	0
Flow, in conduit or thru treatment plant	4	0	0
Solids, total dissolved	4	0	0
Chloride [as Cl]	3	0	0
Cadmium, potentially dissolvd	3	0	0
Sulfide-hydrogen sulfide [undissociated]	3	0	0
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	3	0	0
TU Static Renewal 7-Day Chronic Pimphales promelas	3	0	0
Plant capacity fact. percent of capacity	2	0	0
pH	2	0	0
Chromium, hexavalent dissolved [as Cr]	2	0	0
Silver, potentially dissolved	2	0	0
Copper, potentially dissolved	2	0	0
Lead, potentially dissolvd	2	0	0
Manganese, potentially dissolvd	2	0	0
Nickel, potentially dissolvd	2	0	0
Selenium, potentially dissolvd	2	0	0
Uranium, potentially dissolvd	2	0	0
Chlorine, total residual	2	0	0
E. coli	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
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	2	0	0
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	2	0	0
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	2	0	0
Perfluoropentanesulfonic acid (PFPeS)	2	0	0
Perfluorononanesulfonic acid (PFNS)	2	0	0
Hexafluoropropylene oxide dimer acid (HFPO-DA)	2	0	0
Perfluoro-2-methoxypropanoic acid	2	0	0
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)	2	0	0
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)	2	0	0
Perfluorododecanesulfonic acid (PFDoS)	2	0	0
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)	2	0	0
Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate	2	0	0
Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate	2	0	0
N-methyl perfluorooctanesulfonamide (NMeFOSA)	2	0	0
N-ethyl perfluorooctanesulfonamide (NEtFOSA)	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 COG591208.

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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID COG591208 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit COG591208 held by Crested Butte Town of for the CRESTED BUTTE TOWN OF WWTF in Crested Butte, CO, which discharges to Slate River and East River in the Washington Gulch-Slate River subwatershed (HUC 140200010206). The permit is listed as Effective, issued December 31, 2024 and expiring December 31, 2031, with a Minor discharger classification. The page lists 97 pollutants on file, 97 under a numeric limit, 1 with a violation of any kind, and 1 with an effluent exceedance.