How Much Bleach to Sanitize RV Tanks

How Much Bleach to Sanitize RV Tanks: A Comprehensive Guide

When it comes to maintaining a clean and sanitary environment in your RV, properly sanitizing the water tanks is of utmost importance. RV tanks can harbor harmful bacteria and contaminants, making it crucial to use an effective disinfectant like bleach. In this article, we will discuss the appropriate amount of bleach to use for sanitizing RV tanks, along with frequently asked questions about the process.

Sanitizing your RV tanks not only ensures clean and safe water for drinking, cooking, and cleaning, but it also helps prevent the growth and spread of bacteria that can lead to health issues. Bleach is a common household disinfectant and is widely used for sanitizing RV tanks due to its effectiveness against various microorganisms. However, it is crucial to use the correct amount of bleach to achieve optimal sanitization without causing any damage to your RV’s tanks or plumbing system.

How Much Bleach to Use?

The general rule of thumb is to use one-quarter cup of household bleach for every 15 gallons of water your RV tank can hold. This ratio provides an effective concentration of bleach to water for sanitization purposes. Here’s a breakdown of the bleach-to-water ratio based on the size of your RV tank:

See also  What Poison Kills Snakes

1. For a 30-gallon tank: Use half a cup (4 ounces) of bleach.
2. For a 45-gallon tank: Use three-quarters of a cup (6 ounces) of bleach.
3. For a 60-gallon tank: Use one cup (8 ounces) of bleach.
4. For a 75-gallon tank: Use one and a quarter cups (10 ounces) of bleach.
5. For a 90-gallon tank: Use one and a half cups (12 ounces) of bleach.


1. Does bleach harm the RV tanks or plumbing system?
No, using the recommended amount of bleach for sanitization purposes will not harm the RV tanks or plumbing system. However, excessive use of bleach can corrode certain materials, so it’s important to follow the guidelines.

2. Can I use scented bleach?
No, scented bleach contains additives that can leave residues and potentially contaminate the water in your RV tanks. Stick to regular unscented bleach for sanitizing purposes.

3. How long should the bleach-water mixture sit in the tanks?
After adding the bleach-water mixture to your RV tanks, ensure that it circulates throughout the system by driving or running the water pump for a few minutes. Let the mixture sit in the tanks for at least 12 hours to ensure effective sanitization.

4. How do I flush out the bleach from the tanks?
After the recommended time has passed, drain the tanks completely and refill them with fresh water. Open all faucets and run the water until you no longer smell bleach.

See also  How to Buy a House in Arizona

5. Can I use bleach to sanitize the RV water lines?
Bleach is not recommended for sanitizing the water lines directly. Instead, use a separate RV water line cleaner specifically designed for this purpose.

6. How often should I sanitize my RV tanks?
It is recommended to sanitize your RV tanks at least once every six months, or more frequently if you notice any signs of contamination or an unpleasant odor.

7. Is there an alternative to bleach for sanitizing RV tanks?
Yes, hydrogen peroxide can be used as an alternative to bleach for sanitizing RV tanks. Use a 3% hydrogen peroxide solution in the same ratio as bleach to water for effective sanitization.

In conclusion, maintaining a clean and sanitary RV tank is crucial for a safe and healthy camping experience. Using the correct amount of bleach, as outlined in this article, will help ensure effective sanitization without causing any damage to your RV tanks or plumbing system. Remember to follow the recommended guidelines and frequently sanitize your RV tanks to enjoy clean and safe water during your adventures.