How does new home construction impact our system?

New construction is managed closely, as the addition of new impervious surface can increase the water flowing into sewer systems. La Grange has very restrictive drainage and stormwater management requirements that go above and beyond what is required by the MWRD for all municipalities within their jurisdiction. Residential site development standards require grading improvements and below ground, on-site retention facilities (dissipation systems) for new single-family homes.    

As a result of these requirements, new construction sites improve stormwater management as compared to properties developed without these requirements. Once constructed, these properties provide storage equivalent to one inch of rainfall over 45% of lot coverage and groundwater displaced by building foundations.

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1. What is being done to address flooding?
2. What will have the greatest impact on flooding in La Grange?
3. What about areas north of 50th Street?
4. When will the South Basin/50th Street relief sewer be constructed?
5. When can I see what the engineering plans/study results?
6. What if my home floods?
7. How does new home construction impact our system?
8. I have pictures and video of flooding in or near my home. Can I provide those to engineers?
9. Not finding what you are seeking?