Wow how much pressure do you have coming out of that hookup?
I measured my hose spigot once, and it was like 80-90 PSI. It's so high that I toyed with getting a whole house pressure regulator installed (when you turn on an exterior hose it sounds like a rocket launching, which wakes up babies, which gets me yelled at). But then I was like, wait, this is great for my RODI! And thus, no regulator.