These combined sewer overflow (CSO) reports are filed with the State of Illinois on a monthly basis by the City of Mattoon Wastewater Treatment Plant and are provided here pursuant to Illinois Revised Statutes, 1991, Chapter 111 ½, Section 1039.


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CSO Report December 2010Download
CSO Report November 2010Download
CSO Report October 2010Download
CSO Report September 2010Download
CSO Report August 2010Download
CSO Report July 2010Download
CSO Report June 2010Download
CSO Report May 2010Download
CSO Report April 2010Download
CSO Report March 2010Download
CSO Report February 2010Download
CSO Report January 2010Download