Sterigenics to reopen Willowbrook facility Ryan Voyles 5 years ago Sterigenics has reached an agreement with the state of Illinois to reopen its Willowbrook facility. The facility has been shut down since spring after reports of increased levels of ethylene […]To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.