Cook County
The general web site for Cook County is: www.co.cook.il.us
Forest Preserve District of Cook County
 For information on Forest Preserve District activities click on:  http://www.fpdcc.com/home.php
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Public Guardian
The Cook County Public Guardian acts as an advocate for those disabled by age or physical disabilities. Â The office also serves as a lawyer for abused and neglected children. Â For further information please click on: http://www.publicguardian.org/
Metropolitan Water Reclamation District of Greater Chicago
The MWRDGC was created in 1889 to protect the water quality of Lake Michigan , which was, and continues to be, the major drinking water supply for the metropolitan Chicago area.  The District is a separate government agency — neither a part of the City of Chicago nor Cook County government. A staff of 2,300 men and women work under the direction of nine elected commissioners to carry out this mission.  The District serves an area of 872 square miles, which includes the City of Chicago and 124 suburban communities. The District owns and operates one of the world's largest sewage treatment plants, in addition to six other plants and 24 pumping stations. The District treats an average of 1.4 billion gallons of wastewater each day.  The District's maintains 547 miles of intercepting sewers, which are fed by approximately 10,000 local sewer system connections.
For more information: Â http://www.mwrdgc.dst.il.us/