When it comes to managing the RV holding tank, it’s important to know what can go into the tank and what is off-limits.
It’s a fine line between cleaning the RV holding tank and using the wrong solution. This is a mistake you don’t want to end up making along the way.
You will want to take the time to figure out if you can use the Calgon water softener in an RV holding tank.
It is not safe to use the Calgon water softener in an RV holding tank. It is not designed for this type of use and will leave a chemical residue behind. This is not only dangerous for the holding tank but can also lead to eventual clogging.
It’s better to look for a solution that will work well for the RV holding tank and is going to be as efficient as you want it to be.
This article is going to shine a light on some of the main reasons to not use the Calgon water softener in the RV holding tank.
Table of Contents
Reasons To Not Use Calgon Water Softener In RV Holding Tank
1. Not Designed For RV Holding Tank
You don’t want to put the Calgon water softener in the RV holding tank because it is not designed for this type of use.
It is not going to provide the results that you are after.
RV owners want something that is going to clean the RV holding tank and make sure to soften the waste inside. This also includes wanting to get rid of odors in the holding tank.
Yes, this might work well in other situations but it is not going to yield the results that you want in the RV holding tank.
You are going to end up putting something in the tank that is not going to work out and is going to increase the chances of something going wrong along the way.
It’s better to go with a specialized solution that is made for this purpose.

2. Leaves Chemical Residue Behind
What is the reason for the Calgon water softener not being good for an RV holding tank?
It starts with the chemical residue on the walls.
As soon as the water softener is in the tank, it is going to start to settle in. This is not a good thing because it will not interact in the tank as you want it to.
This ends up creating a situation where the water softener does not flush out of the system and it ends up leaving a chemical residue on the tank walls.
It’s better to go with a solution that is going to clear out the RV holding tank and is not going to leave unwanted residue behind. This is something you are not going to get with the Calgon water softener.
3. Ineffective Results
The results that you are going to get with the wrong type of solution are something to think about too.
You don’t want to put in something that will not yield positive results.
This is the entire purpose of putting anything in the RV holding tank. You don’t want a situation that is going to ruin the RV holding tank and lead to major repairs later.
It’s better to keep things simple and not use the Calgon water softener in the RV holding tank. It’s better to go with something that is made for this purpose and is going to work well as soon as it is in there.
4. Can Clog The Tank
Another issue alongside the residue on the holding tank walls would be the clogging.
You don’t want a situation where the RV holding tank begins to clog and then gets backed up. This is going to amplify the odors in the tank and it is going to get worse with time.
It is best to stop using a solution that is going to compromise the RV holding tank, which is what is going to happen when you go down this path.
The clogging is hard to deal with in the RV holding tank and it’s something you are going to want to avoid at all costs.
Final Thoughts
Can you use the Calgon water softener in the RV holding tank?
You should not use the Calgon water softener in the RV holding tank. It’s not ideal to do this because it will clog the RV holding tank and/or leave residue on the tank walls. It’s also not going to be as effective as other solutions available to RV owners.
Always use a solution that is going to amplify the results rather than bring along with it major consequences. You want to do things the right way and this will only happen when you are using the ideal water softener in the RV.