How Does an RV Water System Work?

This blog post will take a closer look at how an RV water system works and some of the most common problems.  We’ll also provide some tips for troubleshooting and fixing these issues yourself.

Components of an RV Water System

The freshwater tank is the PRIMARY source of water for an RV water system, and it stores fresh drinking water.

Freshwater Tank

A water pump is used to PRESSURISE the water stored in the freshwater tank so it can be used throughout the RV.

Water Pump


Hoses are a key component in an RV water system. They provide the connection between the fresh water tank, pump, and fixtures, transporting pressurised water throughout your recreational vehicle.

The water pressure regulator is an essential component in an RV water system. It helps REGULATE the pressure entering your recreational vehicle’s plumbing system, ensuring a safe and consistent water flow.

Water Pressure Regulator

These valves are located near fixtures and help prevent the BACKFLOW of water into the freshwater tank or other system parts. They also maintain an adequate level of pressure throughout the entire system.


The thermostat controls your RV’s TEMPERATURE settings and monitors when your RV water heater needs to produce warm water.


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