WQ municipal MS4 permits

Active MS4 permits:

MS4 individual permits

MS4 general permits

Statewide general permit, non-standard permit, Cherry Creek Reservoir Basin general permit

MS4 Brochure (En Espanol)

Other permitting forms:

Requests for amendments, notice of transfer, withdrawal, application supplement, measurable goal guidance, Colorado phase II stormwater municipal resources, non-standard fact sheet, guidance for assuming permitting responsibilities.

MS4 compliance assistance and guidance

Compliance forms, annual report forms, Low Risk Discharge Policy and guidance documents, compliance assistance guidance

Urban area maps

Maps by county

Mary Welch