Private equity firm Steadfast Capital completed the investment in Koop Group, a service provider of dewatering and groundwater purification solutions in Europe. Financial terms were not disclosed. "KOOP has shown impressive development in the past few years. With its operational excellence and the strong increase in energy and infrastructure programs, KOOP is well positioned in the market of dewatering and groundwater treatment services and poised to take advantage of numerous areas of growth, both organically and through acquisitions," Marco Bernecker, Steadfast Capital Managing Partner.