All plumbing pipes will freeze no matter if they are made out of lead, galvanized, copper, plastic, or any other material you may have in your area. Pipes need to be protected and kept warm.
Poor engineering designs, poor craftsmanship and lazness causes water pipes to freeze not just the weather elements.
A simple 60 whatt light bulb under a trailer near the water main will help keep the pipes warm and insulating the rest of the pipes and adding a skirt around the trailer.
The first step is to locate all your pipes throughout you house, crawl space, attic, garage, wells or anywhere you have water pipes. Add the total amount of feet that are potentially exposed to freezing conditions. Second you will have to determine the size of the pipe and count how many feet of the size you will need to wrap with pipe heat cable and insulation. Pipe sizes are located on the side of each pipe at one foot intervals.
Start wrapping from where your pipe enters your crawl space, basement, trailer, Rv, Cabin, any building. You must have electrical power so you may have to run an electrical cord to your starting point, or have an outlet installed close. It is always best to have an outlet with it’s own breaker for heat tape.
After you have wrapped all your pipes begin insulating them.
Its as simple as that. Water needs to be warm, so keep it warm and it won’t freeze.
If you can’t do these things or have them done for you then you will have to turn your water off and drain everything, to include toilets, p-traps, water heater and everything. This holds true especially for motor homes, travel trailers, and other items which contain water. Fill all traps with non-corrosive propylene anti-freeze.
You can protect the outside wall hydrants by using a cap like the one I I’m showing in the picture. For extra protection add some insulation around the hose bib before you put the cap on.