For immediate release
October 1, 2019


The Watershed Management Ordinance (WMO) regulates development within Cook County and sewer construction within Metropolitan Water Reclamation District’s (District’s) service area. On May 16, 2019, the MWRD’s Board of Commissioners adopted an amendment to the WMO including new Watershed Specific Release Rates, incorporation of Updated Bulletin 70 rainfall data, updates to the redevelopment provisions relating to detention, and several clarifications.  The amended version of the WMO can be accessed here. 

Municipal staff, municipal engineers, and consulting engineers are invited to attend a training session on the amendment changes.  To RSVP for a training session, please contact Ouidie Pollard at (312) 751-3255.



Date Time Location
Wednesday, October 2, 2019 10:00 a.m.

MWRD Board Room
100 East Erie Street
Chicago, Illinois

Tuesday, October 8, 2019 10:00 a.m.

Prairie Center for the Arts
201 Schaumburg Court
​​​​Schaumburg, Illinois

Thursday, October 10, 2019 10:00 a.m.

Northlake City Hall
Council Chamber Room
55 E. North Avenue
Northlake, Illinois

Tuesday, October 15, 2019 10:00 a.m.

South Suburban Mayors and Managers Association
1904 W. 174th Street
East Hazel Crest, Illinois


As a reminder, starting on January 1, 2020, all permit application submittals must comply with the new Watershed Specific Release Rates, Updated Bulletin 70, and redevelopment changes. The WMO regulates sewer construction within MWRD’s service area and development within suburban Cook County. It provides uniform stormwater management regulations to prevent future com­mercial, municipal, and residential development and redevelopment projects from exacerbating flooding and protects environmentally sensitive areas. The WMO first went into effect in May 2014. The WMO ensures stormwater drainage and detention is provided to curb impacts of new development, protects wetlands and riparian environments, and reduces soil erosion. Paved roads, parking lots, walkways and buildings make cities livable, but they also reduce the amount of land on which water can be absorbed. These improvements can fill and impact the floodplain.


WMO MA.pdf191.99 KB