The Littleton/Englewood WWTP operates from a variety of permits which are issued by the Colorado Department of Public Health and Environment (CDPH&E). The Water Quality Control Division issues the surface water permit that allows the plant to discharge treated water into the South Platte River segment 14 of the Upper South Platte River Basin. The permit contains pollutant limits based on stream standards and low flow conditions. The South Platte River is regulated under Regulation 38.
2012 storm water permit
The Air Quality Control Division of the CDPH&E issues the plant an air permit. The Division refers to them as Construction permits. The Construction Permit Unit issues construction permits to commercial and industrial air pollution sources in Colorado in order to ensure compliance with air quality regulations. The regulations are designed to protect the public's health and welfare and to maintain ambient air quality standards. Approximately 1,500 construction permit applications are processed each year.