Pennon Group Plc is a United Kingdom-based environmental and resource management company. The Company's business is operated through its subsidiaries, which include South West Water Limited and Viridor Limited. The Company's segments include water and wastewater, and waste management. The Company's water and wastewater segment consists of water and wastewater services undertaken by South West Water Limited. The Company's waste management segment includes renewable energy, recycling and waste management services provided by Viridor Limited. South West Water Limited is a provider of water and wastewater services for Devon, Cornwall and parts of Dorset and Somerset. Viridor Limited is engaged in the United Kingdom resource recovery, recycling and renewable energy businesses.