Lots of variables…..one size does not fit all. You really need to put out the cans / coffee cups on the lawn area and measure the amount of water collected after 15-20 minutes. From there you can determine how much water your sprinkler puts out per zone. From there you can tell how long you need to water given the season ; spring/summer (growing). Fall/winter (dormant). Anything more is a waste of money / natural resources.
All the water we will ever have is here already. No one can make more. Be mindful of your children and future generations.
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