City water or On-board tank?

daveengstrand wrote:
This comment is not meant to be smart, simply an honest question. When you leave your S&B to go to the store, the movie or?, do you shut off your water main? Except for the RVs with the gray polybutylene plumbing, they use the same plumbing as a S&B. Some are CPVC and most, if not all, newer ones are PEX. To be fair, movement from driving down the road can obviously play a part. That will have minimal effect on PEX tho. After 30 years, the ones that concerned me the most were the gray stuff, it is not good and had some recalls to be replaced. Next would be CPVC as it gets brittle with age so movement from traveling could cause an issue. PEX is a very durable product. It is tough, flexible and allows for the elimination of a lot of the fittings needed with hard piping such as copper or CPVC.

My S&B uses copper. My RV uses PEX with crimp fittings. My S&B pipes don't see much movement other than heating/cooling, and some slight movement as water goes through them. My RV's piping sees a lot more vibration as it goes down the road.

The reason I turn off the water and use the tank is that my S&B was built to building codes, with someone inspecting them, as well as the city inspecting things as well. My travel trailer... well, it was built to get it out the door, and I have zero clue if it even was near someone who had any plumbing licensing.

With this in mind, if something leaked in my TT, I have 50-ish gallons of water to deal with. If hooked to city water, I have a lot more.

Plus, I like carrying some water. Who knows if I might need to pull over and take a shower or hose something off.