4 ms·Even where you have a lot of cheap water, sewage still has to be proccessed.by thefool 16y agoEven where you have a lot of cheap water, sewage still has to be proccessed.Tichy 16y agoWhat happens to the cardriges?crististm 16y agoWhen people want to save water they think... I'll use water-less toilets! Now they have two problems.