The Arizona Department of Environmental Quality is seeking public comment on expanded plans to reuse wastewater for drinking. The department released a roadmap for its Advanced Water Purification Program last week. ADEQ says the move comes amid increased water scarcity due to persistent drought.  Its roadmap would provide guidelines for municipal and private utilities to treat sewage and send the recycled water directly to homes. As it stands, treated effluent is filtered through the ground before the water is ready for consumption. ADEQ Deputy Director Randy Matas says specific treatment techniques will be left up to local communities, as the map is solely seeking to provide standards.