Irrigation water was for sprinklers. But if kids were going to run around in the sprinklers, then you’d want to use house water. (Did we call it house water or well water?) I knew that the faucet by the porch was house water, but I would have to ask any time I used one of the others. My older brother and sisters seemed to have the whole arrangement of outdoor faucets memorized. But it was simpler than that, they just understood that, as a rule, irrigation faucets came up out of the ground and house water faucets were on the side of the house. That was codified for me late enough in my teens that it somehow doesn’t count.