how to clean rv water tank

3 min read 07-02-2025

Meta Description: Learn how to clean your RV water tank thoroughly! This comprehensive guide provides step-by-step instructions, cleaning solutions, and preventative maintenance tips to ensure safe and fresh water on your next adventure. Avoid health risks and keep your RV water clean and fresh with our expert advice.

Why Clean Your RV Water Tank?

Cleaning your RV's fresh water tank is crucial for several reasons. Stagnant water can harbor harmful bacteria and algae. This can lead to unpleasant tastes, odors, and even health problems. Regular cleaning ensures you have safe, clean drinking water during your travels. Neglecting tank cleaning risks contamination and unpleasant experiences.

What You'll Need:

Before you begin, gather these essential supplies:

Cleaning Solution: Bleach (non-scented), RV tank cleaning solution (e.g., Camco, Thetford), or white vinegar. (See cleaning solution options below for more detail).
Water Hose: A long hose to reach your water tank fill.
Measuring Cups: For accurate measurement of cleaning solution.
Bucket: Optional, but helpful for mixing solution.
Rinsing Water: Plenty of clean water for thorough rinsing.

Step-by-Step Cleaning Process:

1. Prepare Your RV Water Tank

First, drain your fresh water tank completely. Locate the drain valve and open it to let all the water escape. Next, open the low-point drains located underneath your RV to remove any remaining water.

2. Choose Your Cleaning Solution and Mix

Option 1: Bleach: For a simple cleaning, use a diluted bleach solution. Mix ½ cup of unscented bleach per 15 gallons of water tank capacity. Never mix bleach with other cleaning solutions.

Option 2: RV Tank Cleaner: Many specialized RV tank cleaning solutions are available. Follow the manufacturer's instructions carefully for proper dilution and usage. These often contain detergents to help remove organic matter.

Option 3: White Vinegar: White vinegar is a natural alternative for a less harsh cleaning. Fill your tank with water and add approximately 2 cups of white vinegar.

3. Fill and Swirl

After selecting your cleaning solution and mixing it, fill the tank with water. It's important to add the cleaning solution before filling the tank completely. Let the solution sit for several hours, or ideally, overnight. This allows the solution to work effectively to remove any buildup.

4. Rinse Thoroughly

After the cleaning solution has soaked, drain the tank completely again. Then, thoroughly rinse your tank multiple times. Fill it completely with fresh water, let it sit for a bit, then drain it. Repeat this process at least three times to ensure all traces of the cleaning solution are removed.

5. Flush the Water Lines

Finally, run all your water faucets, both hot and cold, to flush out any remaining cleaning solution from the water lines. Don't forget your shower and toilet. You want to make sure everything is entirely clear of bleach or other cleaning agents.

Preventative Maintenance:

Regular cleaning is key, but there are preventative measures:

Avoid Stagnant Water: Use your fresh water tank regularly. Avoid letting water sit for extended periods.
Add a Water Filter: An inline water filter can help remove impurities before they enter your tank.
Winterize Properly: When storing your RV for extended periods, particularly during winter, properly winterize the system to prevent damage and contamination.

Choosing the Right Cleaning Solution

The best cleaning solution for your RV water tank depends on your preferences and the severity of any buildup. Bleach is effective and inexpensive, but some find the smell unpleasant. RV tank cleaners are specifically formulated to remove organic matter and often leave a fresher scent. White vinegar is a natural and safe option, though it may not be as effective against stubborn stains.

Addressing Persistent Odors

If unpleasant odors persist even after thorough cleaning, you may have a more significant problem. Consider:

Inspecting for Leaks: Leaks can introduce contamination and cause musty odors.
Professional Cleaning: A professional RV service can perform a more thorough cleaning and address any persistent issues.

By following these steps, you can ensure your RV water tank remains clean and safe, providing you with fresh water for your next adventure. Remember, regular cleaning is key to preventing contamination and prolonging the lifespan of your water system.