How to Sanitize RV Water Tank | Complete Steps and Guide

How to Sanitize an rv

If you have an RV but you don’t know how to sanitize RV water tank then don’t worry, you are at the right place. Most people used the RV for camping and traveling. The biggest problem with camping is that it is difficult to get clean and fresh water in some places. RV has a tank full of water, which will be enough for the tour but having the same water for many days could also become hygienic for your health. The taste and odor will change with time. So keeping water safe and healthy is very important for your health. Here you will find the easy steps about how to sanitize the RV water tank.

This is an extremely important step to take and should be done regularly. Even if you think that your RV is brand new, it is never too late to start thinking about keeping it healthy by ensuring it is properly treated with some form of water filtration system. You may not realize that your water source can be so dangerous.

Why You Should Need to Sanitize RV Water Tanks

Have you ever wondered why RV owners put so much emphasis on sanitizing their RV water tanks? RVs have the highest infestation rate among recreational vehicles, with the average marine vehicle coming a close second. Sanitizing the RV tank is essential to protecting your family’s health from water-borne illnesses like dysentery or cholera. A well-designed and properly maintained unit will also reduce maintenance costs, as it won’t require as much chemical scrubbing or disinfection as a standard open-water tank.

There are many options available for cleaning your water tank. Some people choose to purchase high-priced specialty kits for their water tanks. First of all, if you’re looking for an RV solution, building your tank can be cheaper than buying one with a custom design. And remember that you don’t need a lot of skill or materials to build a quality sanitizing unit. Some people choose to build their units because they’re cheaper than commercially available options.

How to Sanitize RV Water Tank?

Many people would ask themselves how to sanitize the RV water tank. First, you need to understand that there is no simple answer to that question. You have to bear in mind that the RV (used RV) tanks usually have various equipment and other things inside them that will sanitize water as needed. It is not as simple as adding water to the RV tank and then putting that into the RV for quick use.

Some might think that just filling the water tank with tap water and adding sanitizers or bleach to it would be the simplest way to do it. However, it is hazardous since there are substances such as chlorine and some form of anti-freeze/sewer added to the water. Therefore, you cannot do that in your RV’s without additional investments and equipment. How to sanitize RV water tanks means that you need to know what you are looking for. You can hire someone to come and do the job, or you can find out how to do it yourself.

Easy Steps to Sanitize RV Water Tank

1) Turn Off Water Heater

Water heater attached with water tank. The first step is to turn off the water heater. Because the sanitizing process will damage the water heater. Also, please wait for some time to cool it down. It will be useful to have a water pump to ensure that all the water will be out of the system.

2) Calculate The Bleach You Need

Do not use bleach in excessive amounts because it will leave some dangerous elements in the tank. The quantity of Bleach depends on the size of the tank. One ounce of Bleach will be suitable for eight gallons of the water tank. Calculate the bleach level according to the size of the tank. For example, if you have 20 gallons of the water tank, you’ll need 2.5 ounces of Bleach. Moreover, never use bleach directly in the water due to dangerous chemicals. Pour the calculated amount of Bleach into one gallon of water using a funnel and then use it to clean the water tank.

3) Pump And Potable Water

At first, you need to empty the water tank, and then pour clean water through the water pump. Must try to use this method because it will make you sure pure cleaning and sanitizing. Also, you need to take care that the Bleach will be indeed removed from the tank. That’s why using a pump, and clean water is necessary.

4) Leave it To Clean

After mixing the water and bleach solution, pour it into the tank and leave it for a maximum of twelve hours. If you wash it after some minutes, then the result will not be good. So could you wait for it until proper cleaning? The best way is to leave the freshwater with Bleach in the tank for the whole night and get the best results in next morning.

5) Flush The System

After leaving bleach water into the tank, In next morning again drain all the water from the tank. Again refill the tank with fresh water and circulate it in the whole system for proper cleaning. Try to use a water pump for circulating the water in the system for better results. The bleach smell will take some time to reduce. So repeat the procedure again and again. Because the bleach smell will eliminate by doing the same process repeatedly.

Benefits of Sanitizing Water Tank

Due to the long hour process, everyone wants to ignore the sanitizing process. But it will give you various benefits, and you will know why it is necessary for your water tank. Time doesn’t matter, such as never think about how much you use your water tank or how much time you changed the tank’s water. Keep in mind that you need to do the sanitizer process even twice in six months. On the other hand, if you use boiled water in the tank, then you must try to sanitize the water tank sooner before six months. Furthermore, sanitizing the water tank will ensure that you are using pure freshwater even on touring. It will be good for your health, and the taste of the water remains excellent and fresh.

The Time You Need To Put in The Sanitizing Process

In the above section, we tried to provide the complete process in steps to understand easily. Most people are afraid to spend money on this process because they think it is too expensive. Here we described the total expenditures you will face by processing this system.

First of all, you need to check the tools you need in this process and these tools include one external water filter, internal water filter, Bleach, funnel with the hose, and filter wrench. The external water filter and internal water filter have a cost of 30$. Bleach is available at 2$. Anyhow it depends on the size of the bleach bottle you choose. The wrench and funnel have cost a total of 8$. Some other useful accessories included a container to mix the bleach and water and cups to measure its amount. You can check the total expenditure in this section.

Some Additional Recommendations

Cleaning or sanitizing the water tank is significant for your health and never ignore the essential tips. If you’d not follow the instructions, it will be not good for your health because the water tank also provides you with drinking water. Hence, here we talk about some additional tips to follow. First of all, keep in mind that you can never use dirty water for cleaning. You need to use clean and fresh water for the whole process. Must follow all the instructions related to the cleaning process. Never use Bleach separately to clean the tank, which means always using the calculated amount of Bleach with water mix.

Things That You’ll Need to Sanitize RV Properly

As with many sanitizing complications, there are some things that you’ll need to purchase to do this properly. In addition to water, you’ll need sanitizing agents, a bucket, and some funnel. These items can easily be found online or in a retail store and are relatively inexpensive. You may want to contact local water treatment facilities for more information.

After you have finished your project, you’ll need to let the water sit for a few days. It’s essential to allow the water to sit for a few days because the bacteria that cause food poisoning can build up while it sits. Once the time has elapsed, you’ll need to drain the water from your water tank, then clean it. You should rinse the inside of the water tank and any accessories with water and let them dry.

You might also interested to know about: How To Winterize An RV! 


A water tank in RV is an essential accessory because it becomes complicated to get clean and fresh water while traveling. So every RV owner knows the actual worth of an RV water tank. But keeping water in the tank for a more extended period could also be dangerous for your health due to creating mold and smell in the tank. You use the same water for drinking and cooking, so it is necessary to sanitize the water tank with time. In this article, we’ve explained in detail how to sanitize RV water tank, so you can follow the above easy steps to make your RV water tank free of bacteria. It doesn’t matter how often you use your water tank. Every water tank in the RV required sanitization once in six months. Using boiled water in the tank, use the same process sooner in six months.

Sanitizing your RV is easy and doesn’t take much time or money. When you’re done, you’ll need to let your RV return to camp so that you can use the new water. Although there are some simple steps to follow, there are also lots of things that you’ll need to know when you’re camping. Take the time to learn about them, and your camping experience will be much better.

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