Minnesota environmental officials say cleanup efforts to cut phosphorous levels in the Minnesota River are making a difference, the Star Tribune reports. After testing this summer, the Pollution Control Agency found oxygen levels in one of the state's dirtiest waterways are better than expected. The agency credits a 2004 phosphorous reduction plan for sewage treatment plants
The MPCA monitored a 20-mile stretch of the Minnesota River for three weeks in August, when the river was at its lowest point since 1988.
In late September, a report said the Mississippi River, flowing through the Twin Cities, was healthier than it’s been in a generation.