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Clean Water Act discharge permit · NPDES COR430423

REGIS GROFF, Denver, CO: NPDES COR430423 discharge permit, effluent exceedances, inspections, penalties

REGIS GROFF, held by Denver Public Schools, holds NPDES permit COR430423. EPA’s file records it issued April 17, 2026 and expiring March 31, 2029. 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 REGIS GROFF: 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 COR430423.

Identity

Facility as filedREGIS GROFF
Permittee as filedDenver Public Schools
NPDES IDCOR430423
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 17, 2026
Expiration dateMarch 31, 2029
AddressDenver, CO 80249
SubwatershedCity of Thornton-South Platte River (HUC 101900030402)

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 COR430423.

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 COR430423.

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 COR430423 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES COR430423, held by Denver Public Schools for the facility listed as REGIS GROFF in Denver, CO, with an effective status and a minor discharger class. The EPA permit file records it as issued April 17, 2026 and expiring March 31, 2029, with 0 pollutants on file, 0 under a numeric limit, and 0 with an effluent exceedance.