Private equity-backed oilfield landfill and saltwater disposal well operator PetroWaste Environmental has been sold to a subsidiary of Houston landfill operator Waste Management.

Dallas private equity firm Tailwater Capital announced on Monday morning that it sold San Antonio-based PetroWaste Environmental to WM Energy Services Holdings.

Financial terms of the deal were not disclosed but PetroWaste Environmental was launched in January 2019 with private equity funding from Tailwater Capital.