It takes a lot to keep a water system healthy. In Union County this month, public works employees have been cleaning the water mains using an unusual process called “ice pigging.” I went to see how it works. Listen to my report on WFAE.org March 10, 2016, WFAE.org, How Union County Uses An Ice Pig … More How Union County Uses An Ice Pig To Keep Water Pipes Clear | WFAE