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Clean Water Act discharge permit · NPDES COR420255

SAFER MAIN STREETS - MISSISSIPPI AVENUE VISION ZERO SAFETY PROJECT, Denver, CO: NPDES COR420255 discharge permit, effluent exceedances, inspections, penalties

SAFER MAIN STREETS - MISSISSIPPI AVENUE VISION ZERO SAFETY PROJECT, held by City and County of Denver, holds NPDES permit COR420255. EPA’s file records it issued May 31, 2023 and expiring March 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for SAFER MAIN STREETS - MISSISSIPPI AVENUE VISION ZERO SAFETY PROJECT: its NPDES ID, its permit type and status, its dates, its address in Denver, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR420255.

Identity

Facility as filedSAFER MAIN STREETS - MISSISSIPPI AVENUE VISION ZERO SAFETY PROJECT
Permittee as filedCity and County of Denver
NPDES IDCOR420255
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
IssuedMay 31, 2023
Expiration dateMarch 31, 2024
Issuing agencySTA
AddressDenver, CO 80202
Receiving water impaired303(D) Listed
Subwatershed101900020904 (HUC 101900020904)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR420255.

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 COR420255.

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, COR420255.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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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 COR420255 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.