Lexington is launching the first round of more than 80 sewer improvement projects.
The work is part of a ten-year plan.
And this is a mandatory project for Lexington.
For years, big rains created overflows in the city and forced untreated sewage into Fayette County Creeks.
A federal court order requires Lexington to make improvements to stop the overflow.
Mayor Jim Gray says the changes will cost the city around $600 million.
The first three sewer projects to get underway include Bob O Link Drive, East Lake and Century Hills.