East Chicago Water Filtration Plant Predesign Study

City of East Chicago, 
Indiana

East Chicago Water Filtration Plant Predesign Study

Service Type: 
Project Highlights: 

• Predesign study to evaluate operational methods for a 32-mgd water treatment facility.
• Addressed particulate removal, microbial control, taste, odor, and algae removal issues.
• Phased implementation schedule and costs for needed improvements.

East Chicago Water Filtration Plant
Carollo will apply its experience in rehabilitating older water treatment facilities to develop a phased implementation plan to improve the 37-year-old East Chicago Water Filtration Plant.

The East Chicago Water Filtration Plant was originally put into service in 1964. Although the plant had a design capacity of 32 mgd, it was using only 75 percent of its capacity due to a history of lower water demand. To meet the standards of the Safe Drinking Water Act of 1986 and ensure protection against chlorine resistant pathogens, the City of East Chicago hired Carollo to conduct a predesign study to evaluate operation methods and to determine if physical modifications were needed.

With Lake Michigan being the source water for the filtration facility, the primary issues for evaluation were particulate removal and microbial control. The study also addressed secondary issues like taste, odor, and algae removal. Although the facility already employed conventional treatment using flocculation and sedimentation, it more often ran in a direct filtration mode. This resulted in minimal solids removal during pretreatment. The plant met current turbidity standards, but only when referring to the combined effluent of all filters. Individual filter evaluations showed turbidity and particulate breakthrough during start-up and filters were not equipped to operate in a filter-to-waste mode.

In addition to upgrade and improvements issues, the study addressed the issue of water supply and demand. A 20-year projection showed that with the expansion of industrial customers the facility would need to be increased to a capacity of 32 mgd. Carollo’s predesign study detailed needed improvements, along with costs and a phased schedule for implementation. Carollo will apply its experience in rehabilitating older water treatment facilities to develop a phased implementation plan to improve the 37-year-old East Chicago Water Filtration Plant.

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