Representatives Arndt and Hansen presented House Bill 18-1053, concerning the allowable uses of reclaimed domestic wastewater, and allowing reclaimed water to be used for marijuana cultivation. The bill, recommended by the Water Resources Review Committee, codifies rules promulgated by the Water Quality Control Commission (WQCC), within the Colorado Department of Public Health and Environment (CDPHE), related to the allowable uses of reclaimed domestic wastewater, and expands allowable uses to include marijuana cultivation. Additionally, the bill defines three categories of water quality standards. Under current law, reclaimed domestic wastewater is wastewater that has received treatment for subsequent reuses other than drinking. The Colorado Water Quality Control Act authorized the WQCC to promulgate control regulations to describe requirements, prohibitions, standards, and concentration limitations on the reuse of reclaimed domestic wastewater that will protect public health and encourage reuse.