Possibly a leak in the system between the meter and the valves. Also, check the valves to make sure they are all closed. We had a couple of sprinklers kinda spitting water and it turned out that the valve in the box beside the house was not closed completely. You should have a blue box beside the house and inside there are all the control valves for your system. Make sure they are all turned clockwise securely. Someone could have opened one of yours and not closed it all the way.
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Greg
A pessimist is an optimist with experience.
"In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress." - John Adams
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