[Crowbob]

Typically, domestic, i.e., homeowner, irrigation systems tap into the water line before the line feeds the house and have a back-flow preventer installed.

Depending on how much ground needs irrigation this could be a major undertaking.

What I would do in your situation is to lay black plastic pipe (in trenches) with a flexible adapter that would be manually connected to the nearest outside faucet(s) for each use. A slight hassle but waaaay easier than dragging hoses all over the place.