BoltRock, a family investment office, and Centaurus Capital, a family investment office, led a $225m Series D round in Gradiant, a solutions provider of advanced water and wastewater treatment, with participation from Warburg Pincus, a private equity firm. “As global manufacturing and supply chains continue to advance, they demand more and more water resources which are increasingly rare and finite. We are excited to partner with a company that has truly proven the ability to support these demands in an economic and energy efficient manner," John Arnold, Centaurus Capital Founder.