I have a possible solution to your problem.
Do you know that your irrigation controller has three run programs and then three more sub programs in each of those three for a total of 9 possible programs cycles. If for some reason those got set to various run times, your water consumption will go through the roof.
This is a very real possibility. A good friend of mine had exactly the same problem as you are having and I checked his control box. It was set to run for 30 and 40 minutes in each of the sub programs. I then set it to run in only one program and it worked fine for a while. In about five months, it did the same thing all over again and when I checked it, the sub programs had reappeared. ?????????
Please check your controller and if you don't know how to see the sub programs, find somebody who does, and I'll bet your problem will be solved.
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