A federal judge has rescheduled a trial that pits Des Moines Water Works against boards of supervisors in three northwest Iowa counties to June 26, 2017. The trial had been scheduled for August. In a lawsuit filed in March 2015, Des Moines Water Works sued supervisors in Buena Vista, Calhoun and Sac counties in their roles as trustees of 10 drainage districts over the discharge of nitrates into the Raccoon River. The trial was rescheduled because of the court’s schedule and a desire to resolve issues pending in the Iowa Supreme Court, according to a release.  Read a primer on the lawsuit atBusinessRecord.com.