Reworld™is a leader in sustainable waste solutions. Previously known as Covanta, Reworld™ is building a smarter, more sustainable world by helping businesses and communities reimagine what their waste can do. Our solutions help transform the most complex waste challenges into positive environmental and economic impacts. The Southeastern Massachusetts (SEMASS) Resource Recovery Facility is an award-winning thermomechanical treatment facility producing renewable energy. The facility serves nearly 40 communities in Southeastern Massachusetts, Cape Cod and the Boston metropolitan area with reliable and sustainable waste management.