I thought this was interesting as cacti don't really need supplemental watering. These healthy looking specimens are flowering nicely at Tovrea Castle. I doubt the spigot is ever turned on for them, it just looks as though it might be the cause of their robustness.
This is way (WAY) north Phoenix in Deem Hills looking south.
But new or old, it seems that devlopment and saguaros are not good mixes.