In our last campground, Jetty Park, I noticed water pressure spikes strong enough to cause non leaking hose spigot to spray briefly. I was smugly thinking our adjustable water pressure regulator was protecting our trailer. Now, at Fort Desoto, our shower faucet hoses started leaking. I checked the regulator. 40psi. Figured the regulator was set at 40psi from factory. Went to adjust to 25psi and got many turns of the adjustment screw before pressure started coming down. It was probably wide open during the pressure spikes at Jetty. Live and learn.