Metropolitan Water Reclamation District of Greater Chicago

Combined Sewer Overflows

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The District has developed a public notification program for combined sewer overflows (CSOs) into the Chicago area waterways in accordance with Special Condition 10.12 of the NPDES Permits for the North Side, Stickney, and Calumet WRPs and Special Condition 14.12 of the NPDES Permits for the Kirie and Lemont WRPs.
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