By Steven Verburg | Wisconsin State Journal

Dane County is setting aside about $1.3 million for new technology officials say could turn lake-fouling dairy cow manure into crystal clear water.

The process would be installed at a county-sponsored biodigester just outside of Middleton that this year began collecting natural gas from manure and other waste, and extracting about half of the phosphorus before the manure-waste mixture is spread on farm fields as fertilizer.