Phoenix used to provide bi-monthly irrigation to just about every neighborhood. For whatever reason, irrigation became less popular over time. Many neighborhoods eventually gave up their irrigation service in favor of sprinkler systems that use less water. As far as I know, this was done with homeowner consent - people could choose to keep irrigation if they wanted. But most switched. I’m not sure why, because city irrigation is actually a great deal.
Anyway, in older neighborhoods, you see a lot of homes that stuck with the irrigation service. This is one of them.
