Greenstar Recycling is the largest municipal and commercial single stream processor in the Pittsburgh area. The company began in 1991 as a metals only processor, but has diversified since that time to a full service materials recovery facility (MRF).
Greenstar opened its single stream plant on Neville Island in 2007. Prior to that Greenstar operated as a dual stream processor with facilities located in Carnegie, Donora and Franklin, Pennsylvania. With conversion to single stream, Pittsburgh has seen steady growth in recycling.