We bought our house last year in the summer - 3/4 acre plot with previous owner installing a 12 station sprinkler station - Only me and the wife at home in a 3 bed one storey - we do have a swiming pool but it was full when we bought and have not had to top up much. Our water usage with the sprinkler system was in excess of 50,000 gallons a month - I went away for 2 days and turned all the "on demand water" systems off - like fridge ice maker but left mains on and did not isolate any faucett or water supply - at the end of 2 days the water meter was the same - no water usage - I presume either the water sprinkler uses a tremendous amount of water or the water meter is incorrect. Any advice?