United Utilities Group Plc engages in the provision of water and wastewater services. It collects water from the environment, which the firm cleans and stores before distributing it to customers for their use then collect it as wastewater and treat it before returning clean water back to the environment. The firm's wastewater treatment captures sludge which is then transported to its Bioresources treatment facilities. The firm's main treatment process uses digestion technologies to safely and compliantly treat the sewage sludge. The digestion treatment produces biogas which it uses to generate renewable energy and biosolids for onward use. The company was founded on April 1, 1989 and is headquartered in Warrington, the United Kingdom.