Connecting your sprinklers to the water line is actually fairly easy when you're installing your own sprinkler system. Basically, you just go to your outside tap, screw it off and screw in your house connection.
So, see this video tutorial from Sprinkler Daddy to see how to connect your sprinkler system to the water line. Before you know it, your grass will be greener than it ever was, reducing the need of further landscaping.
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