Water Quality Control Commission regulations

 
Drinking water regulations:
  • Regulation 11: Colorado Primary Drinking Water Regulations (5 CCR 1002-11) (amended 3/10/15, effective 5/01/15).
Procedural and planning rules:
 
Surface water quality classifications and standards (currently effective):
  • Regulation 31: The Basic Standards and Methodologies for Surface Water (amended 1/9/17, effective 3/1/17).
  • Regulation 32: Classifications and Numeric Standards for Arkansas River Basin (amended 11/14/16, effective 3/1/17).
    • Appendix 32-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 33: Classifications and Numeric Standards for Upper Colorado River Basin and North Platte River (Planning Region 12) (amended 1/11/16 and 5/9/16, effective 6/30/16).
    • Appendix 33-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 34: Classifications and Numeric Standards for San Juan River and Dolores River Basins (amended 1/11/16, effective 6/30/16).
    • Appendix 34-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 35: Classifications and Numeric Standards for Gunnison and Lower Dolores River Basins (amended 11/14/16, effective 3/1/17).
    • Appendix 35-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 36: Classifications and Numeric Standards for Rio Grande Basin (amended 1/11/16, effective 6/30/16).
    • Appendix 36-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 37: Classifications and Numeric Standards for Lower Colorado River Basin (amended 1/11/16, effective 6/30/16).
    • Appendix 37-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 38: Classifications and Numeric Standards for South Platte River Basin, Laramie River Basin, Republican River Basin, Smoky Hill River Basin (amended 11/14/16, effective 3/1/17).
    • Appendix 38-1, Stream Classifications and Water Quality Standards Tables.
  • Regulation 39: Colorado River Salinity Standards.  
 
Groundwater quality classifications and standards:
  • Regulation 41: The Basic Standards for Ground Water (amended 5/9/16, effective 6/30/16).
  • Regulation 42: Site-Specific Water Quality Classifications and Standards for Ground Water (amended 1/9/17, effective 3/1/17).
  • Regulation 43: On-Site Wastewater Treatment System Regulation (adopted 5/8/17, effective 6/30/17).
 
Financial assistance rules:
  • Regulation 51: State of Colorado Water Pollution Control Revolving Fund Rules (amended 8/10/15, effective 9/30/15).
  • Regulation 52: Drinking Water Revolving Fund Rules (amended 8/10/15, effective 9/30/15). 
  • Regulation 53 NOTICE OF REPEAL: Domestic Wastewater Treatment Grant Funding System (repealed 8/11/14, effective 9/30/14).
  • Regulation 54 NOTICE OF REPEAL: Drinking Water Grant Fund (repealed 8/11/14, effective 9/30/14).
  • Regulation 55: State Funded Water and Wastewater Infrastructure Programs (amended 8/11/14, effective 9/30/14).
 
Point Source Discharge Permit and control regulations:
  • Regulation 61: Colorado Discharge Permit System Regulations (amended 3/13/2017, effective 4/30/17).
  • Regulation 62: Regulations for Effluent Limitations (amended 6/11/12, effective 7/30/12).
  • Regulation 63: Pretreatment Regulations (amended 12/12/16, effective 03/01/17).
  • Regulation 64: Biosolids Regulation (amended 5/12/14, effective 6/30/14).
  • Regulation 65: Regulations Controlling Discharges to Storm Sewers (amended 4/14/08, effective 5/30/08).
  • Regulation 66: Financial Assurance Criteria Regulations for Colorado Housed Commercial Swine Feeding Operations (amended 7/12/10, effective 8/30/10).
 
Watershed protection control regulations:
  • Regulation 71: Dillon Reservoir Control Regulation (amended 4/9/07, effective 5/30/07).
  • Regulation 72: Cherry Creek Reservoir Control Regulation (amended 10/9/12, effective 11/30/12).
  • Regulation 73: Chatfield Reservoir Control Regulation (amended 2/9/09, effective 3/30/09).
  • Regulation 74: Bear Creek Watershed Control Regulation (update effective 05/30/05).
 
Other control regulations:
  • Regulation 81: Animal Feeding Operations Control Regulation (amended 10/7/2013, effective 11/30/13).
  • Regulation 82: 401 Certification Regulation (last update effective 3/31/03). 
  • Regulation 84: Reclaimed Water Control Regulation (amended 6/10/13, effective 7/30/13).
  • Regulation 85: Nutrients Management Control Regulation (adopted 6/11/12, effective 9/30/12).
  • Regulation 86: Graywater Control Regulation (amended 11/9/15, effective 12/30/15).
 
Implementation of Clean Water Act Section 303(d) requirements:
  • Regulation 93: Colorado's Section 303(d) List of Impaired Waters and Monitoring and Evaluation List (amended 10/11/16, effective 11/30/16).