While cities and towns filter out pollutants with wastewater treatment plants, like this one in Hastings, private wells aren’t regulated. Owners have to treat water on their own. (Angelina ...

Increasing levels of nitrate in Ontario’s watersheds including the Grand River is a serious issue for the entire province, says Mayor Kevin Davis. But the mayor is optimistic that solutions can be ...

The U.S. Environmental Protection Agency recently added segments of five rivers near large Iowa cities including Cedar Rapids to the state's impaired waters list for nitrate — over the repeated ...