The cold weather didn't stop hundreds in Flint, Michigan from attending an event to hear environmental investigator Bob Bowcock discuss the city's water supply.

He also toured Flint's Water Treatment Plant. 

And while he didn't test the water, he did give some recommendations to the city.

"When it comes to water treatment, less is more. I think they can cut a lot of the chemical feeds back and get it under control. That being said it's still got to be competitive with the water supply from Detroit," said Bowcock

Bowcock says cutting back on chemicals could reduce the number of impurities and the cost.