Mains water in Dorset (England) is supplied by Wessex Water (predominant; Bournemouth Water/South West Water in the BCP conurbation); typical hardness: Hard, ~284 mg/l CaCO3. Water quality is regulated by the Environment Agency · Ofwat · Drinking Water Inspectorate.
Sources: Wessex Water (predominant; Bournemouth Water/South West Water in the BCP conurbation)