Thanks to timely acquisitions of other pumping companies, diving into the fats, oils and grease business, and pioneering private wastewater processing, Stewart’s Septic Service has grown from a mom-and-pop outfit into a big pumping player in New England.A lot of wastewater has passed through the Bradford, Massachusetts-based company over the years, and owner John Divincenzo was already successfully treating collected waste when Pumper first profiled Stewart’s in 2003.Today, the company continues to reach for new frontiers, now converting grease into dollars, selling it as the raw material for biofuel production. And Divincenzo and his crew keep learning by attending the
