A note about trailers and utilities. When leaving the trailer for a while when camping always turn off the water supply and the propane supply. These are two things that can cause a disaster when you are not there. This is especially important if you are leaving a pet inside the trailer when you are gone.
I was parked next to a fifth wheel one afternoon and observed that their water line had burst. Water was pouring out of the storage compartment. I went over and turned the water supply off. They were very thankful for my actions when they returned. Damage was minimized because it was caught in time.
They did not have a water pressure regulator in use.