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Sewer Services / Flood Mitigation
Operation & Maintenance

The Public Works Department is responsible for the operation and maintenance of the Village's sewer and storm water collection and conveyance systems, which include 72 miles of combined, storm, and sanitary sewers.

Flooding Information
Combined Sewer System

The Village of La Grange operates a combined sewer system in which the sanitary and storm water is combined into a single pipe.  In heavy rain events this system can be surcharged, resulting in flooding that can include combined sewer backups and standing water in depressional areas. 

In response to flooding events, the Village has hosted several educational workshops on flooding.  The information provided at these workshops including both the power point presentation and video of the presentation can be found by clicking here.

The Village routinely maintains the sewer system through televising, cleaning and sewer lining.  Residents can assist in the effort of keeping catch basins clear by removing debris or contacting Public Works to do so. 

Village Flood Control Objectives

Over the last several years, the Village has experienced multiple high intensity rain events that exceeded the limited capacity of the Village’s sewer system resulting in flooded basements, overland flooding in a number of depressional areas, and private property drainage issues.  

As a result, a tiered approach to the prioritization of flood control objectives was identified.  Tier 1 implements solutions to address overland flooding and water pooling in depressional areas and Tier 2 reduces the frequency of combined sewer backups.  

To fund the first phase of initiatives, the Village Board enacted a voter authorized increase in the local retail sales tax and approved increases in the Municipal Utility Tax, Simplified Telecommunications tax and sewer rate.  

50th Street Storm Sewer Project

This project includes the construction of a new storm sewer along 50th Street from East Avenue to Waiola Avenue, a new storm sewer on 8th Avenue from 50th Street to 48th Street, and a new storm sewer on 48th Street from 8th Avenue to 9th Avenue.  Construction is expected to begin in 2016.  Construction notices will also be available on the Village’s website during the project.  

Relief Sewer Projects

There are also a number of other long-term initiatives the Village has identified to address flooding, which includes relief sewers.

Deep Tunnel

To view an informational brochure about combined sewers and the Deep Tunnel or TARP (Tunnel and Reservoir Plan), please click here.

Flooding Report

To report a flooding event, we request that you fill out the attached form.
More information regarding proper cleaning of a flooded home is available through the Illinois Department of Public Health.


What you can do to prevent sewer backups
  • Have a qualified, experienced plumber who guarantees their work inspect your basement.  To protect your home from sewer backups, have a check valve or overhead sewer installed.  A licensed contractor and permit is required for this work.  These home improvements will prevent sewer backups if properly installed. 
  • Disconnect your home's downspouts so they drain onto pervious (absorbent) surfaces instead of into the sewer system.  It is important to make sure the disconnected downspout does not direct water toward your foundation or a neighbor's foundation.  Consider directing flow to a rain barrel or rain garden area. 
  • You can connect downspouts to rain barrels (available from the MWRD and other suppliers) to save the rainwater for reuse.
  • Consider replacing your driveway and other paved areas on your property with pervious surfaces that can absorb stormwater.  If permeable pavers are used for a driveway, walkway, patio, etc.  then they do not count towards lot coverage.  Installation of the pavers must also include proper drainage approved by the Village.
  • Have your lateral connection inspected for blockages or damage that could cause basement backups.

For more information regarding flood control measures, please consult the Illinois Association for Floodplain and Storm water Management Guide to Flood Protection in Northeastern Illinois and Repairing Your Flooded Home from FEMA.

The Community Development Department provides technical assistance to residents in the form of consultations with the Village Engineer and Village Staff in order to encourage consideration of permeable pavers, dry wells, overhead sewers, rain gardens and bioswales.  Please contact the Community Development Department at (708) 579-2320 for more information.