2 people might use 200 gallons per day in the house...toilets, washer, dishwasher, showers. + or -
That is 6000 gallons per month. The rest is the pool and the acreage. In the summer, pool evaporation is not insignificant, but the firts place to look is the landscape. How often do you water...for how many minute...do you have a lot of runoff or any soggy spots?