Whether it will list and cost all projects being undertaken by (a) North of Scotland Water, (b) East of Scotland Water and (c) West of Scot…

North of Scotland Water Authority and West of Scotland Water Authority have both given Scottish ministers an undertaking to carry out improvement works, to comply with the provisions of the new Drinking Water Directive 98/78/EC. There is currently no drinking water quality undertaking for East of Scotland Water Authority. The projects that comprise the undertakings for the North and the West are listed in the authorities annual water quality reports.There are 564 water supply zones in Scotland and the North of Scotland Water Authority undertaking should bring about compliance with the Directive in 258 of these zones at an estimated cost of £180 million. The West of Scotland Water Authority undertaking, which covers 28 zones, is estimated to cost £123 million. The cost of the individual projects comprising the undertaking is not held centrally. This is a matter for the water authorities.In addition to the undertaking programmes in the North and the West, all three water authorities are carrying out lead pipe replacements and installing orthophosphate dosing equipment, to comply with the new lead standard.