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How To Fill Up Your RV's Fresh Water Tank

Updated: Jul 3, 2023

Here are some valuable tips on how to effectively fill your RV freshwater tank, ensuring a reliable and clean water supply during your travels.

How to fill your RV's freshwater tank

If you are about to start your seasonal RV travels it is time to start preparing. Simple things such as drinking water or taking a shower we take for granted because the water is always there. On an RV this is not the case and you are responsible for your water. Having fresh water on hand is key to making your travels easier. Here are the steps to fill up your fresh water tank before your journey.

Every camper is designed differently, but most include a freshwater tank. You’ll use this handy system for drinking, cooking, dishes, showers, and using the toilet when not hooked up to an outside water source. Learning how to fill and care for the fresh water tank is a definite necessity.

What is a Fresh Water Tank for RV

An RV freshwater tank, also known as a fresh water tank or potable water tank, is a storage container built into recreational vehicles (RVs) that holds clean, drinkable water. It is a crucial component of the RV's water system and provides a convenient supply of fresh water for various purposes such as drinking, cooking, bathing, and washing.

The size of an RV freshwater tank can vary depending on the specific RV model and its intended usage. Tanks can range in capacity from around 20 gallons for smaller RVs to over 100 gallons for larger motorhomes. The tank is typically made of food-grade plastic or another suitable material that ensures the water remains clean and safe for consumption.

Proper maintenance and care of the freshwater tank are essential to ensure the water remains clean and free from contaminants. Regular cleaning and sanitizing of the tank, as well as monitoring the water quality, are recommended to maintain a safe and healthy water supply while on the road.

It's important to note that the freshwater tank is separate from other tanks in an RV, such as the gray water tank (which holds used water from sinks and showers) and the black water tank (which holds waste from the toilet). Keeping these tanks separate helps maintain sanitation and proper waste management in the RV.

Overall, the freshwater tank is a vital component of an RV's water system, providing a self-contained supply of clean water for everyday activities while traveling or camping.

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How to Fill Your RV's Freshwater Tank at a Campsite

filling rv freshwater tank at campsite

If you are currently at a campsite with a city water supply there is no need to worry about filling your tank. If using city water, ensure to switch your intake valve to the option that says “city supply” or “local supply” and turn your water pump off. You only need to use the water pump when you are using water from your freshwater tank. In other words, if you have hooked a hose up to your RV at a campsite and are using city water, you are bypassing your fresh water tank. The pressure from the city spigot will push water through the hose and throughout your rig when you turn on a faucet or flush.

  1. In the Drivers Side Rear outside compartment, you will find the hose labeled, Fresh Clean Water.

  2. To make a direct connection to the City Water Connection, connect the end of the hose to the campsite water spigot and screw the other end (male end) into the hand twist connection labeled City Water Connection (on the Drivers Side Rear portion of the RV).

  3. The Adapter on the end of the hose is a Pressure Regulator, which ensures you do not rupture any pipes on the interior of the RV by having too much water pressure in the hose/pipes. Please ensure you leave this ON at all times.

  4. Turn on the campsite water spigot slowly and after about 20 seconds, have someone on the interior of the RV check to see if the water is running.

  5. When using the City Water Connection, DO NOT turn on the Water Pump. The pressure from the City Water Connection will give you all the water pressure you need, even for a shower.

How to Fill Your RV's Fresh Water Tank On The Road/ In Remote Areas

  1. In the Drivers Side Rear outside compartment, you will find the hose labeled, Fresh Clean Water.

  2. To fill the fresh water tank, connect the end of the hose to the fresh water fill spigot and screw the other end (male end) into the hand twist connection labeled Potable Water Only.

  3. The Adapter on the end of the hose is a Pressure Regulator, which ensures you do not rupture any pipes on the interior of the RV by having too much water pressure in the hose/pipes. Please ensure you leave this ON at all times

  4. Turn on the water spigot slowly and have someone on the interior of the RV, check the Convenience Center Fresh water button to see how full the tank is. (Depress black small Fresh button and check water level).

  5. There is an Overflow Valve, so you can’t over-fill the water. When the fresh water tank is full, turn off the water at the spigot and remove the hose.

  6. Ensure you place the cap back on the water intake, so no debris gets into the fresh water.

  7. When using the Fresh Water Tank, you need to turn on the Water Pump (Convenience Center Panel) to run fresh water.

Tips on Filling Your Freshwater Tank

Filling the RV freshwater tank is an essential step to ensure you have an adequate supply of clean water during your travels. Here are some tips to consider when filling your RV freshwater tank:

1. Choose a reliable water source: Look for designated fill stations, campgrounds with water hookups, or other reliable sources of potable water. Ensure that the water source is safe and suitable for drinking.

2. Use a potable water hose: Invest in a dedicated potable water hose that is specifically designed for RV use. These hoses are typically white or blue and are labeled as safe for drinking water. Avoid using a regular garden hose, as it may contain chemicals or contaminants that could compromise the water quality.

3. Flush the hose before use: Before connecting the hose to the water source, run a small amount of water through it to flush out any debris or contaminants that might have accumulated.

4. Ensure a secure connection: Connect the hose tightly to the water source and the RV's freshwater inlet to avoid leaks or water loss during the filling process.

5. Monitor the tank's capacity: Keep an eye on the freshwater tank's capacity while filling. Most RVs have an indicator or gauge that shows the tank's level. It's important not to overfill the tank, as it may cause water to overflow and create a mess.

6. Allow time for proper filling: Depending on the tank's capacity, it may take some time to fill it completely. Be patient and allow the tank to fill at a reasonable rate to prevent water splashing or overfilling.

7. Consider water weight: Remember that water is heavy, and the more water you carry in the freshwater tank, the heavier your RV will be. Take this into account when loading your RV and be mindful of weight limits to ensure safe and optimal travel.

8. Sanitize the tank regularly: Along with filling the freshwater tank, it's crucial to sanitize it periodically to maintain water quality and prevent the growth of bacteria or algae. Follow the manufacturer's guidelines or consult your RV's owner's manual for proper sanitization procedures.

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In conclusion, filling your RV freshwater tank is a vital task to ensure you have access to clean and reliable water while on the road. By following the tips mentioned above, you can make the process efficient, safe, and hassle-free. Remember to choose a suitable water source, use a dedicated potable water hose, and monitor the tank's capacity to avoid overfilling. Additionally, be mindful of the weight of the water and regularly sanitize the tank to maintain water quality. With these considerations in mind, you can enjoy a refreshing water supply throughout your RV adventures. Safe travels and happy camping!



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