The Buffalo Sewer Authority originally estimated it might cost a half a billion dollars over many years to get rid of the sewer overflows that have polluted the waterways. Tens of millions of dollars are still being spent on getting rid of the overflows, but now it's increasingly computerized and greener.

That's according to General Manager Oluwole McFoy, who said these new ways of running an old sewer system are actually working better and cheaper than anticipated. Across the city, there are construction sites underway, completed or planned.

McFoy said the new computerized systems can deal with local weather quirks.

"You know, it could be raining here and downtown and not raining in South Buffalo. So we're trying to get our system to a place where we actually utilize our smart sewers to not only prevent combined sewer overflows, but actually to move water from areas that are having rain, so moving the water in our pipes to other areas," he said.