In 1965, a new sewage treatment plant came on-line in Salt Lake City that prevented of raw sewage from being dumped into a canal. The Utah Division of Water Quality and Utah Division of Drinking Water are responsible for the regulation and management of water quality in the State of Utah. Streams that exceed the standard contamination levels are placed on the 303d list in accordance with the Clean Water Act. The Act also requires states to identify impaired water bodies every two years and develop a total maximum daily load (TMDL) for pollutants that may cause impairments in the various water bodies. The Jordan River and Little Cottonwood Creek were included on the 2006 303d list; parameters that exceeded the standard level for at least part of the Jordan River include temperature, dissolved oxygen, total dissolved solids, "E. Coli" and salinity. Superfund sites are designated as being among the nation's worst areas with respect to toxic and hazardous waste. The Environmental Protection Agency is the federal agency that determines if a particular site is hazardous, prepares a course of action to reduce the hazard, and finds the parties responsible for the pollution. If a site is listed with the Superfund program, federal dollars are available for cleanup. The Kennecott South Zone/Bingham site contains contamination from Kennecott Copper Mine's operation in Copperton, at the base of the Oquirrh Mountains to Bingham Creek and Butterfield Creek. A plume of lead, arsenic and sulfates (covering 9 percent of the watershed) currently contaminates the ground water from the mine site all the way to the Jordan River. The largest inland reverse osmosis plant in the country was built in 2006 to clean up the ground water and a second plant has been scheduled for construction; completion of the ground water cleanup, however, is not projected until 2040. In 1998, the site was removed from the Superfund list due to Kennecott's progress in the cleanup and a consent decree legally obligating Kennecott to continue the rest of the cleanup. The Murray Smelter site was the location of a large lead smelter in operation from 1872 until 1949. The site contained groundwater contamination from arsenic and lead, but the majority of the cleanup was completed in 2001. In Midvale, there are two Superfund sites that sit along 4 percent of the Jordan River. The Midvale Slag site is a site adjacent to of the Jordan River. From 1871 to 1958, the site contained five separate smelters that processed ores from Kennecott and other mines.