Clean Water Act discharge permit · NPDES COG589067

NUCLA WWTF, Nucla, CO: NPDES COG589067 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
12Pollutants under a numeric limit
7Pollutants with an effluent exceedance

NUCLA WWTF, held by Nucla Town of, holds NPDES permit COG589067, which discharges to Calamity Draw. EPA’s file records it issued October 1, 2008 and expiring October 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	NUCLA WWTF
Permittee as filed	Nucla Town of
NPDES ID	COG589067
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	October 1, 2008
Expiration date	October 31, 2010
Address	Nucla, CO 81424
Receiving water	Calamity Draw
Subwatershed	Turtle Draw-San Miguel River (HUC 140300030704)
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
12With a violation of any kind
7With 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
E. coli	6	56	24	January 31, 2018	523% over the limit
BOD, 5-day, 20 deg. C	15	52	12	June 30, 2017	167% over the limit
pH	6	20	4	May 31, 2012
Solids, total suspended	8	18	2	April 30, 2017	20% over the limit
BOD, 5-day, percent removal	1	3	2	May 31, 2009	13% over the limit
Nitrogen, ammonia total [as N]	6	33	1	January 31, 2018	47% over the limit
Flow, in conduit or thru treatment plant	10	23	1	October 31, 2013	20% over the limit
Solids, total dissolved	12	23	0
Oil and grease visual	3	11	0
Chlorine, total residual	4	10	0
Oil and grease	3	8	0
Plant capacity fact. percent of capacity	0	6	0
Coliform, fecal general	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 COG589067.

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 COG589067 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES COG589067 held by Nucla Town of for the NUCLA WWTF in Nucla, CO, which discharges to Calamity Draw within the Turtle Draw-San Miguel River subwatershed (HUC 140300030704). The permit is listed as administratively continued, a Minor discharger class, with 13 pollutants on file, 12 under a numeric limit, 7 with an effluent exceedance, and 12 with a violation of any kind.