Mains water in Somerset (England) is supplied by Wessex Water (Taunton, Bridgwater, Yeovil); Bristol Water in the north; typical hardness: Moderately hard to hard (~210 to 243 mg/l CaCO3). Water quality is regulated by the Environment Agency · Ofwat · Drinking Water Inspectorate.
Sources: Wessex Water (Taunton, Bridgwater, Yeovil); Bristol Water in the north