RV Facts - Water and Sewer Systems

Understanding your RV's water and sewer systems is essential for safe and enjoyable travels. Proper maintenance and operation prevent costly damage and ensure a comfortable experience.

The Fresh Water System

The fresh water system is your source for drinking, cooking, and bathing. It is composed of three main parts: the fresh water tank, the water pump, and the city water inlet.

Components and Function

Component	Function	Maintenance Note
Fresh Water Tank	Stores potable water for use when not connected to a city source.	Sanitize at least twice a year.
Water Pump	Pressurizes water from the tank to the faucets and shower.	Check for leaks and proper cycling.
City Water Inlet	Connection point for an external pressurized water source.	Always use a water pressure regulator.
Water Heater	Heats water for hot showers and washing.	Drain and flush annually.

Filling and Usage

There are two primary ways to get water into your RV:

1. Using the City Water Connection: Connect a white, potable-water-only hose from a campground water spigot to your RV's city water inlet. Always use a water pressure regulator to protect your RV's plumbing.
2. Filling the Fresh Water Tank: Use a potable-water-only hose to fill the tank via the designated fill port. Use the onboard water pump to draw water from the tank and pressurize the system.

The Waste Water System

RV waste water is divided into two categories and stored in separate tanks until disposal.

Black and Gray Water Tanks

Tank Type	Contents	Disposal Frequency
Black Tank	Waste from the RV toilet.	Empty when at least two-thirds full or before moving.
Gray Tank	Water from sinks and showers.	Can be emptied more often, but always empty black tank first.

Dump Station Procedures

Dumping your tanks must be done at an approved dump station. Follow these steps for proper tank emptying:

1. Wear disposable gloves.
2. Attach the sewer hose to your RV's sewer outlet and secure the other end into the dump station port.
3. Pull the Black Tank valve handle to empty the tank first.
4. Once empty, use the built-in tank flush connection (if available) to rinse the black tank.
5. Pull the Gray Tank valve handle. This water helps rinse the sewer hose.
6. Close both valve handles.
7. Disconnect the sewer hose and clean/store it appropriately.
8. Wash hands thoroughly.

Winterization and Storage

If the RV will be stored in temperatures below freezing, you must protect the plumbing system from damage by winterizing it. This typically involves blowing out the lines with air or adding non-toxic RV antifreeze. Refer to your owner's manual for specific instructions for your model.