I do not understand why the water is the only thin...

I do not understand why the water is the only thing we have to get ourselves. Is there any reason that your staff do not put a bottle \ jug of water on the table? I was at your Melbourne central restaurant on the 1st Jan 2019. I have not noticed the water setup on the table, so requested the staff member. She has pointed me towards the water setup and advised that I go and get this myself.