Clean Water Act discharge permit · NPDES COG588047

RIDGWAY, TOWN OF, Ouray County, CO: NPDES COG588047 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
12Pollutants under a numeric limit
3Pollutants with an effluent exceedance

RIDGWAY, TOWN OF, held by Ridgway Town of, holds NPDES permit COG588047, which discharges to Uncompahgre River. EPA’s file records it issued July 1, 2005 and expiring May 31, 2010. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	RIDGWAY, TOWN OF
Permittee as filed	Ridgway Town of
NPDES ID	COG588047
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	July 1, 2005
Expiration date	May 31, 2010
Address	Ouray County, CO 81432
Receiving water	UNCOMPAHGRE RIVER
Subwatershed	Coal Creek-Uncompahgre River (HUC 140200060205)
SIC	4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

13Pollutants on file
12Under a numeric limit
13With a violation of any kind
3With 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.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	6	122	40	January 31, 2025	173% over the limit
Nitrogen, ammonia total [as N]	6	32	14	April 30, 2013	60% over the limit
BOD, 5-day, percent removal	1	18	7	June 30, 2021	100% over the limit
Flow, in conduit or thru treatment plant	6	62	0
Solids, total suspended	4	30	0
Plant capacity fact. percent of capacity	0	20	0
pH	4	18	0
Solids, total dissolved	4	17	0
Chlorine, total residual	3	14	0
Coliform, fecal general	2	10	0
Oil and grease	1	9	0
Oil and grease visual	1	9	0
E. coli	2	8	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 COG588047.

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 COG588047 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act discharge permit NPDES COG588047, held by RIDGWAY, TOWN OF in Ouray County, CO, which discharges to the Uncompahgre River and is administratively continued as a minor discharger. The page lists 13 pollutants on file, 12 under a numeric limit, and 3 with an effluent exceedance.