ILLINOIS WASTEWATER PROFESSIONALS CONFERENCE Springfield Crowne Plaza/April 16 - 18, 2018 Registration is now open http://events.r20.constantcontact.com/register/event?oeidk=a07eef2qqc5006af7fe&llr=bvdbgpcab ; The Illinois Wastewater Professionals Conference (IWPC) is the joint annual conference for the Illinois Water Environment Association and the Illinois Association of Water Pollution Control Operators. Conference highlights include technical sessions and workshops; exhibits; operations challenge competition; tours; receptions, luncheons, and awards banquets; and young professional events.