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Clean Water Act discharge permit · NPDES COG589010

PURGATORY METROPOLITAN DIST, Durango, CO: NPDES COG589010 discharge permit, effluent exceedances, inspections, penalties

PURGATORY METROPOLITAN DIST, held by Purgatory Metropolitan District, holds NPDES permit COG589010, which discharges to Unnamed Drainage To Cascade Creek. EPA’s file records it issued October 6, 2005 and expiring October 31, 2010. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedPURGATORY METROPOLITAN DIST
Permittee as filedPurgatory Metropolitan District
NPDES IDCOG589010
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 6, 2005
Expiration dateOctober 31, 2010
AddressDurango, CO 81301
Receiving waterUNNAMED DRAINAGE TO CASCADE CREEK
SubwatershedOutlet Cascade Creek (HUC 140801040203)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, ammonia total [as N]03531July 31, 20241,777% over the limit
BOD, 5-day, percent removal13128May 31, 2023540% over the limit
E. coli03423January 31, 202499,999% over the limit
BOD, 5-day, 20 deg. C10309March 31, 20211,633% over the limit
Coliform, fecal general2106December 31, 2009733% over the limit
Flow, in conduit or thru treatment plant4205March 31, 202499,999% over the limit
Chlorine, total residual284December 31, 2022268% over the limit
pH293May 31, 2016
Solids, total suspended4102May 31, 20224% over the limit
E. coli, thermotol, MF, MTEC241February 28, 201321% over the limit
Solids, total dissolved890
Plant capacity fact. percent of capacity080
Oil and grease120
Oil and grease visual120

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES COG589010.

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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COG589010.

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How we handle your data → Privacy

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 COG589010 there.

Nearby on the register

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