Clean Water Act discharge permit · NPDES COG608003

LITTLE NELL WELL CITY WELL 4, Aspen, CO: NPDES COG608003 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
13Pollutants under a numeric limit
0Pollutants with an effluent exceedance

LITTLE NELL WELL CITY WELL 4, held by Aspen City of, holds NPDES permit COG608003, which discharges to Roaring Fork River. EPA’s file records it issued December 21, 2020 and expiring May 31, 2025. 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	LITTLE NELL WELL CITY WELL 4
Permittee as filed	Aspen City of
NPDES ID	COG608003
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	December 21, 2020
Expiration date	May 31, 2025
Address	Aspen, CO 81611
Receiving water	Roaring Fork River
Subwatershed	Roaring Fork River above Aspen (HUC 140100040106)
SIC	1781 – Water Well Drilling

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
13Under a numeric limit
13With 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.

Pollutant or measure	Limits	Violations, any kind
pH	6	6
Solids, total suspended	6	6
Arsenic, total recoverable	6	6
Iron, total recoverable	6	6
Iron, dissolved [as Fe]	6	6
Manganese, dissolved [as Mn]	6	6
Selenium, potentially dissolvd	6	6
Uranium, total	6	6
Flow, in conduit or thru treatment plant	6	6
Solids, total dissolved	6	6
Oil and grease	3	3
Flow, total	3	3
Oil and grease visual	3	3

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG608003.

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 COG608003.

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 COG608003 there.

Nearby on the register

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

This public-records page covers NPDES permit COG608003 for the LITTLE NELL WELL CITY WELL 4 facility in Aspen, CO, held by Aspen City of and discharging to the Roaring Fork River, with a permit status of Administratively continued and a discharger class of Minor Discharger. The page lists 13 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit issued December 21, 2020 and expiring May 31, 2025.