Severn Trent PLC operates in the water and wastewater sector, providing essential services to over nine million people across the UK. Its primary activities include supplying clean drinking water and treating wastewater through its regulated businesses, Severn Trent Water and Hafren Dyfrdwy. The company also generates renewable energy from various sources, including anaerobic digestion and hydropower, and offers operational services to private businesses. Severn Trent serves a diverse customer base in both urban and rural areas, primarily in regions from the Bristol Channel to the Humber.