just came back from 8 day outing. Tested water system before we left and not problems.When we got to campground noticed water coming from back of faucet down the wall. tried to remove faucet assembly with no luck. has anyone had the same problem. I think connect on assembly came loose. Ps caught all kinds of trout from a creek. 
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There's a vacuum breaker built into the connection between the hose and the faucet. That will leak after use until the water in the hose is drained out. It's supposed to. It's there to prevent back siphoning of shower water into the system if the showerhead were to be dropped into water (and the faucet open, and the pump off).

Might that be it?
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