Sewer overflow contributes toward harmful algal blooms in lake

It is estimated that combined sewer overflows (CSOs) contribute up to 1.5 percent of the total phosphorus load into Lake Erie, according to the Ohio Environmental Protection Agency.

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Program Progress

100% Complete
Started in 2002
Completed in 2020

The Toledo Waterways Initiative (TWI) program encompasses more than 45 separate projects over the course of 18 years, at a total cost of $529.65 million. This bar shows the construction phase of the program is completed.