(1) What number of ablution facilities in each building within the parliamentary precinct are still fitted with time-based automatic flushing mechanisms; (2) are there any plans in place to replace the mechanisms with water-saving mechanisms that only flush when needed; if so, by what date will this be undertaken; (3) is there any existing infrastructure, such as storage tanks and pumps, to utilise the ground- and stormwater flowing underneath the precinct for non-potable purposes; if so, what are the relevant details; if not, (4) whether his department has plans to install such infrastructure; if not, why not; if so, by what date; (5) what has his department done to lower the consumption of potable water at the parliamentary precinct during the current drought and what percentage of water saving has been achieved thus far