Current proceedings
- October 15, 2024: Regulation #82, 401 Certification Regulation.
- October 15, 2024: Regulation #61, Colorado Discharge Permit System Regulations.
- October 15, 2024: Regulation #101, Written-Comment Only, Water Quality Civil Penalty Inflation Adjustment Regulation.
- 2024 Rulemakings Environmental Justice Outreach.
- For more information visit: https://cdphe.colorado.gov/environmental-justice
- February 12, 2024: Regulation #72, Cherry Creek Reservoir Control Regulation.
- February 12, 2024: Regulation #38, Segments COSPUS16d, COSPUS16e, COSPUS16f, COSPMS3b.
- May 13, 2024: Regulation #102, Water Quality Control Division Cash Fees.
- June 10, 2024: Regulations #32, 33, 36, 37 & # 32-38: Basins Hearing.
- June 10, 2024: Regulation #31 and #33, The Basic Standards and Methodologies for Surface Water and Classifications and Numeric Standards for Upper Colorado River Basin and North Platte River (Planning Region 12).