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Clean Water Act discharge permit · NPDES COR090041

ADAMS COUNTY PUBLIC WORKS MS4, Westminster, CO: NPDES COR090041 discharge permit, effluent exceedances, inspections, penalties

ADAMS COUNTY PUBLIC WORKS MS4, held by Adams County Government, holds NPDES permit COR090041, which discharges to Unnamed Tributary To Big Dry Creek. EPA’s file records it issued March 10, 2008 and expiring March 9, 2013. 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.

What the register holds for ADAMS COUNTY PUBLIC WORKS MS4: its NPDES ID, its permit type and status, its dates, its address in Westminster, Colorado, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR090041.

Identity

Facility as filedADAMS COUNTY PUBLIC WORKS MS4
Permittee as filedAdams County Government
NPDES IDCOR090041
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
ProgramSmall municipal storm sewer systems
IssuedMarch 10, 2008
Expiration dateMarch 9, 2013
AddressWestminster, CO 80234
Receiving waterUnnamed Tributary to Big Dry Creek
SubwatershedMiddle Big Dry Creek (HUC 101900030407)
SIC9511 – Air, Water, & Solid Waste Management

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR090041.

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 COR090041.

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, COR090041.

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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 COR090041 there.

Nearby on the register

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

What this page shows

The ADAMS COUNTY PUBLIC WORKS MS4 permit is one of 13 Storm Water Small MS4s permits on EPA's NPDES register in Adams County, and it sits among 86 NPDES permits in the Middle Big Dry Creek subwatershed. Of those 13 Adams County storm water small MS4s permits, 0.0% have a violation on file, and none of the 13 was issued earlier than this one.