The goal of the federal Clean Water Act, found in U.S. Code 33 U.S.C. §1251 et seq., is "to restore and maintain the chemical, physical, and biological integrity of the Nation's waters." Many organizations throughout Missouri monitor bodies of water across the state. The department combines this data with department-collected data and then determines if the waters meet state water quality standards, which protect the beneficial uses of water. Those waters that fail to meet the standards are listed as impaired.
Under section 303(d) of the Clean Water Act, each state is required to identify waters not meeting water quality standards and for which adequate water pollution controls have not been required. The resulting 303(d) list helps the state keep track of impaired waters not addressed by normal water pollution control programs. Links to Missouri's current and previous 303(d) lists are available below. Additional information is also available about Water Quality Monitoring, Water Quality Data, Total Maximum Daily Loads (TMDLs) and Biological Assessment Reports.
Contact Information
Water Protection Program
Division of Environmental Quality
P.O. Box 176
Jefferson City, MO 65102-0176
United States
Water Protection Program
Section 305(b) Integrated Water Quality Report