For my 1400 sq ft condo it runs between $400 and $600 BZ per. I would leave the overhead fans on all the time and use the AC at night occasionally. Guests would tend to turn on the AC. My stove, refrigerator TV, as well as my many kitchen gadgets eats up electricity.
Water costs $.10 per gal. My daughter and I could not agree on what used the most water; dishwasher or by hand.
The more showers the more water. Having come from NORTHERN California where we had periodic droughts we all got into the habit of military showers: 1 - water on to get wet, 2 - water off to soap up, 3 - water on to rinse off.
You can pretty much control your own usage.