Restroom trailer for a December 2026 wedding: How do we keep the pipes from freezing?

The best way to protect the external plumbing is to use insulated water hoses and to keep the trailer's internal heater running continuously. The restroom trailer has an integrated heater that warms the interior space, which helps protect the internal pipes, but the external fresh water supply line and waste line are exposed to the cold. For the 50-foot fresh water hose, you need a specifically designed insulated hose, which the rental company may offer as an add-on. Do not use standard garden hoses; they will freeze solid. You can also wrap the hose in foam insulation tape for extra protection. The waste line, which carries gray water from the sinks to the holding tank, is less likely to freeze if the trailer is in constant use, as the warm water from handwashing will flow through it. The main holding tank for waste, located underneath the trailer, does not typically need antifreeze added like a standard unit because the waste is primarily liquid and the tank is enclosed. Confirm all these winterization steps with your rental company, as their specific model may have different requirements. For a December event, the company should deliver a unit prepared for cold weather.