(1) Whether any investigation will be made with regard to water which enters the Free State river system at the Ash River outlet from the Highlands Water Scheme; if not, why not; if so, what are the relevant details; (2) whether water is polluted by the towns along the rivers before entering the Vaal Dam system; if not, what is the position in this regard; if so, what are the relevant details; (3) whether any municipalities along the river system have violated the regulations with regard to pumping sewage into the river systems as at the latest specified date for which information is available; if not; what is the position in this regard; if so, what systems are in place to prevent such pollution of this water?