Water has always been a source of contention because you need it to live on and they can charge you whatever they want. You got water you got power!
You can cut down your usage by getting a toilet that uses less water when you flush. (Or flush less often. If its yellow let it mellow if its brown flush it down).
Use gray water (water from the dishes or shower etc) on plants. Feed your plants the left over coffee (they like that).
Buy appliances that use less water like a washing machine for your clothes. I've heard that a dishwasher uses less water then washing by hand.
Take a military shower (rinse, scrub down and wash off, no lingering).
Then when you go to a hotel take nice long hot showers!