Alternative Water Source Program

The program consists of the planning, design and construction of a new water source for the City of Joliet by 2030. Due to the complexities and unknowns associated with the water source alternatives, both the Lake Michigan – New Indiana Intake and Lake Michigan – Chicago Department of Water Management alternatives will be simultaneously investigated during the initial part of preliminary design with a final decision to be made by the end of 2020.

The Lake Michigan – New Indiana Intake alternative consists of the construction of a new raw water intake in Lake Michigan on the Indiana shoreline, pumping facilities and transmission mains to bring raw water to the City of Joliet for treatment and distribution throughout the existing system. The conceptual implementation costs for this alternative range from $900 million to $1.1 billion depending upon capacity.

 

Major considerations for the program include:
 

      High Quality Raw Water Source from Lake Michigan
 

      Control over water rates and implementation
 

      Sustainable water quantity to serve Joliet and potentially          the region now and in the future

The Lake Michigan – Chicago Department of Water Management alternative consists of purchasing water from the City of Chicago at the Southwest Pumping Station and construction of pumping facilities and transmission mains to bring finished water to the City of Joliet for distribution throughout the existing system. The conceptual implementation costs for this alternative range from $500 - $600 million depending upon capacity, not including purchased water costs. This alternative will consider two variations: Joliet owned transmission main or Chicago owned transmission main. 

 

Major considerations for the program include:

 

      High Quality Raw Water Source from Lake Michigan
 

      Existing water system
 

      Sustainable water quantity to serve Joliet and potentially          the region now and in the future