Whether Rand Water has an allotment of water for each municipality; if not, what is the position in this regard; if so, what (a) is the amount for each municipality, (b) total amount was used by each municipality for each month from 1 January 2023 to 30 June 2023, (c) is the optimal amount of water needed by each municipality and (d) are the reasons for the allotment of water?