WEFTEC – Chicago, IL by bds | Sep 23, 2019 | Previous Events | 0 comments Welcome to WEFTEC The Water Environment Federation (WEF) is the not-for-profit organization that brings you WEFTEC. READ MORE Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.