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Metropolitan Water Reclamation District of Greater Chicago

If you are unsure whether or not a permit is required, please contact Constance Mihalache at or 312-751-3248 with questions regarding permit applicability, permit application procedure and submittal requirements, related ordinance requirements, etc. You may be asked to submit a sketch, site plan, and/or letter to describe details of the project in order to enable us to properly answer your questions. If permit applicability is not certain, it is recommended that a permit determination letter be obtained prior to starting any construction and risking enforcement action.

To request a Permit Determination, please submit a formal request letter to Constance Mihalache.  The request should include a narrative describing the scope of the project, a site plan, and any other supporting documentation and exhibits that may help explain the scope of work proposed.  A pdf version of the letter and supporting documents should be submitted by email to  Hard copies of Permit Determination request letters are accepted, but are not processed as quickly as emailed letters due to limited on-site staffing.  Responses to requests for permit determinations are typically issued within 3 weeks.

Request letters can be addressed to:

Constance Mihalache
Engineering Department - Local Sewer Systems Section
Metropolitan Water Reclamation District of Greater Chicago 
111 East Erie Street, 6th Floor 
Chicago, IL 60611-2893