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Water Quality Standards

The Water Quality Control Commission is responsible for adopting water quality standards for surface water and ground water in Colorado. These standards (including use classifications, narrative and numerical standards, and antidegradation provisions) are set forth in specific Commission regulations (see "Current Water Quality Standards" link below). Standards are used for assessing the quality of Colorado waters and for establishing regulatory requirements for activities that may impact water quality.


Current Water Quality Standards - Commission Regulations #31 through #42  (NOTE:  This link will take visitors to an FTP site.)


Standards Adoption and Revision Process


Recent and Pending Water Quality Standards Reviews


Implementation of Water Quality Standards



Your opinion is important to us.  If you have comments regarding this information, or wish to have additional information included, please email us at cdphe.wqcc@state.co.us.