Illinois Clean Watersheds Needs Survey 2008 The Clean Watersheds Needs Survey (CWNS) is a comprehensive assessment of needs1 to meet the water quality and water-related public health goals of the Clean Water Act (CWA). States and the U.S. Environmental Protection Agency (EPA) conduct the CWNS every four years under CWA Section 516 (b). Illinois documented needs totaling $17.6 billion in 2008. This is a 10 percent increase from the $16.0 billion in needs documented in 2004. Documented Needs in Illinois Needs (2008 Dollars, Millions) Type of Need 2004 2008 Percent Change Wastewater treatment $1,503 $4,452 196% Pipe repair and new pipes $2,414 $2,137 -11% Recycled water distribution nra nr 0% Combined sewer overflow correction $11,972 $10,877 -9% Total Wastewater Treatment Needs $15,889 $17,466 10% Conveyance infrastructure n/a $31 n/a Treatment systems n/a $3 n/a Green infrastmcture n/a $1 n/a General stormwater management nr $2 n/a Total Stormwater Management Needsb nr $37 n/a Agriculture (cropland) best management practices (BMPs) $41 $51 24% Agriculture (animals) BMPs nr $1 n/a Silviculture (forestry) BMPs nr $2 n/a Ground water protection: unknown source BMPs nr nr 0% Marinas BMPs nr nr 0% Resource extraction BMPs nr $1 n/a Brownfields remediation nr nr 0% Storage tank remediation nr nr 0% Sanitary landfills BMPs nr nr 0% Hydromodification (Water resource restoration and protection) $20 $18 -10% Other estuary management activities0 n/a nr n/a Total Nonpoint Source Control NeedsM $61 $73 20% Total Decentralized Wastewater Treatment Needsb'd <$0.5 nr -100%. Total Needs $15,950 $17,576 10%. aNot reported; Actual needs may be higher, since documenting these needs is difficult; °In 2004, Other Estuary Management Needs were reported under Separate State Estimates (SSEs); dNot included in Official Needs in the Report to Congress. County Needs ($M) None reported <10 10-75 >75 1 Documented needs in the CWNS include the unfunded capital costs of projects as of January 1, 2008 that address a water quality or a water quality-related public health problem existing as of January 1, 2008, or expected to occur within the next 20 years; and meet the seven CWNS documentation criteria. All needs are in January 2008 dollars. ------- Illinois Clean Watersheds Needs Survey 2008 Wastewater Treatment Facilities The enactment of the Clean Water Act (CWA) in 1972 resulted in dramatic improvements in the: Number of wastewater treatment plants. Percentage of the population served by wastewater treatment plants. Quality of effluent treatment from wastewater treatment facilities. In 2008, 89% of Illinois residents received centralized wastewater treatment services at the secondary, advanced, or no discharge treatment level, compared to 39% in 1972. Number of Centralized Treatment Facilities and Population Served Number of Facilities Population Served %Total %Total Population Population Treatment Level 1972 2008 Projected" 1972 1972 2008 2008 Projected3 Less than Secondary 60 0 0 650,000 6 0 0 0 Secondary 72 384 401 2,025,000 18 726,682 6 901,891 Advanced 225 285 322 2,357,000 21 10,656,756 83 12,363,709 No Discharge 0 4 14 0 0 11,257 <1 35,131 Total 357 673 737 5,032,000 45 11,394,695 89 13,300,731 a Number of facilities and population served if all needs documented in the CWNS 2008 are met. Small Communities In Illinois, small community wastewater facilities serve 10% of the population and comprise 7% of total wastewater treatment and collection needs. EPA small community support information is available at: www. epa. gov/owm/mab/smcomm Reported Needs for Facilities in Small Communities Facilities 1 Needs (2008 Dollars, Millions) Population 2004 2008 2004 2008 0-999 42 60 $97 $137 1,000-3,499 69 116 $287 $459 3,500-10,000 46 66 $486 $587 Total 157 242 $868 $1,183 Visit www.epa.gov/cwns for more information including: Detailed Reports to Congress Other state fact sheets Maps, charts, and data downloads for projects, facilities, watersheds, counties, congressional districts, cities, states, and regions ------- |