A dataset of private water supplies on commercial premises, with OS grid reference. A private water supply (PWS) is a supply of water which is not provided by a water supplier (e.g. Yorkshire Water). The source of the supply may come from a: Well Borehole Spring River or stream Lake or pond Private distribution system (mains water privately distributed by a second party) The supply may serve one property or several properties. Further information For more information on private water supplies, please visit: http://www.leeds.gov.uk/Business/Pages/Private-water-supplies.aspx