Until June of this year, my monthly consumption was always right at 27,000 gals/month. Starting in June, every OTHER month my consumption increases almost exactly 10,000 gals.
I live by myself and have guests only 4-6 days per year. The only other usage variable I have any knowledge about or control over is my landscape irrigation system, which accounts for a bit more than 2/3 of my monthly consumption. The timer on my irrigation system appears to be working just fine and I have only one watering pattern programmed into it, which has not varied for more than a year.
The water company and the company that service my irrigation equipment/system have been unable to offer any useful suggestions as to how to troubleshoot this unexplainable pattern of a large usage jump alternating months.
My water meter is new as of March of this year and also appears to be working just fine. It is read manually, and all my usage readings for 2009 have been actual, not estimated usage numbers.
I cant think of any way I could be using so much extra water all of a sudden, but only every 2nd month. (If I had a leak, or even an irrigation timer problem, wouldnt it show up EVERY month rather than every other one?
Can anyone suggest a reason for this inconsistency, or how I might go about discovering what is causing it?