The City of Elmhurst initiated a comprehensive Flood Control program after experiencing street flooding and backups during heavy rain events. This program found that the fully developed southwest area of the city had significant capacity restrictions that needed to be addressed.
Hydraulic modeling simulations found that the pump station serving the area was undersized and the age of the housing and the number of connections to the sewer system, wet-weather storage at the WWTP was the best solution.
A new wet-well was added to the undersized pump station, the dry-weather force main was upsized and a new wet-weather force main was installed to route flow to the new above-ground storage tank. Automated controls track flow levels at the pump station and route flows to the storage tank when levels reach the programmed height. The storage tank then releases flows to the WWTP when flow levels decrease.
Mike Young, PE
City of Elmhurst, Illinois
2013 — 2016