Water Softener Leaking From The Overflow: 5 Best Solution

Your water softener system might overflow from time to time, and it’s widespread. An overflowing water softener tank can flood certain areas of the house.

Water softener leaking from the overflow
Water softener leaking from the overflow

But don’t you worry! This article will discuss the top reasons that lead to overflowing and the top methods you can use to stop it from happening. 

Water Softener Leaking From The Overflow: Reason 

Your water softener tank won’t overflow just like that, and there can be many reasons for that. From lack of maintenance to clogging, damages the options are vast. In this section, we will list the common triggers that cause this glitch. 

Water Softener Leaking From The Overflow: Reason
Water Softener Leaking From The Overflow: Reason

💧Leaking valve

Your water softener tank may be overflowing due to the leakage of the brine valve. But thankfully, this is easily fixable. Seeping values often don’t shut off completely.

Thus the water will keep coming to the tank resulting in water everywhere. The best way to fix this issue is by replacing the broken valve.

💧Low pressure

Surprisingly, low water pressure can also result in water overflowing from the tank. The softener system will leave brine in the water tank due to low pressure.

Furthermore, the softener will continue being added to the tank resulting in flooding. This issue mostly happens after regeneration. Fixing the water pressure will sort this issue.

💧Clogged drain line

If you want to have a state-of-the-art softener mechanism, it’s essential to keep the lines clear. If the lines are clogged or twisted, the water flow will get restricted. 

This will disrupt the entire flow, and the machine will not draw sufficient water from the brine tank. Furthermore, the softener will keep adding water to the tank and cause an overflow.

💧Sticking float

The softener will eventually regenerate if the brine float is not working correctly. The system will keep supplying water to the brine tank and cause an overflow. If your brine float is clogged and dirty, it’s advisable to get a new one. 

💧Damaged piston

If you have been using the softener for a while, the piston may be damaged with use. A damaged or worn-out piston causes overflow or adds to the flood. A broken piston allows the water to go beyond the seals and deliver water to the brine tank endlessly, leading to a significant overflow. It’s best to replace the whole thing if the piston is damaged. 

💧High brine flow

If you have set the brine flow at a position higher than the recommended limit, there will be chances of flooding. If the float is high, it will supply too much water to the brine tank leading to an overflow. You need to reset the limit to fix this problem.

💧Clogged injector or brine screen

Water pollutants will eventually clog the brine screen of the injector, which is a standard scenario. Once clogged, these parts will not draw brine from the tank, causing the softener to supply more water, and you will have an overflowing tank in no time. To avoid such a situation, it’s essential to follow a maintenance routine regularly.

💧Dirty float

The brine float can get dirty or clogged with buildup and debris, leading to flooding. It’s advisable to keep the float clean to avoid such a situation. 

How do I stop my water softener from overflowing?

Now that we know the popular reasons for overflowing water softener tanks let’s check out a few ways to stop this. 

How do I stop my water softener from overflowing?
How do I stop my water softener from overflowing?

💧Check the brine line

You must ensure that the brine line is appropriately attached to the float’s brine tank. Once the water flow reaches a specific height, the float will shut it off. But if the brine line is not correctly inserted, it will cause water to flow right into the tank and cause the tank water to rise. 

💧Unclog the overflow

Often people opt for significant readjustments and replacements without considering the simple solutions at first. So before you also do that, check to see if there is any salt buildup in the tank. Salt leads to clogging. 

Salt binds together, which obstructs the path of the water. If this is the case, the water will not be able to get into the tanks. The water will continue to accumulate and cause flooding. So check for salt buildup and clean it.

How to Remove a Salt Clog from Your Water Softener

💧Control valve and regeneration

A control valve regeneration fixing will help you deal with the whole water overflow issue. Regeneration is cleaning the resin beads that accumulate in the tank with minerals. 

It’s important to regenerate the water softener from time to time to keep the resin bed clean. This process helps flush out the magnesium, calcium and other minerals. The valve provides a backwash to the tank clearing all the buildup. 

Once cleared, the brine solution starts to pump into the tank immediately.

💧Drain line check

A clogged drain line is standard in households with a significant iron concentration in the water forcing the homeowners to clean the tank often. Sometimes, however, cleaning the pipes may not solve the problem. In that case, it’s essential to clean better. 

If there is no blockage in the line, check the valve and look for a blockage there. Blockages float about, so make sure you check the whole system to identify any. Thankfully clearing out salt buildup is easy, but detecting the problem early is essential.

💧Safety float check

Most water softener systems come with something called a safety float. This shuts the brine tank’s water flow if there is too much water supply. Often, this float does not function properly, leading to overflow and flooding. Fixing this can resolve the water overflow problem. 

Frequently Asked Questions (FAQs)

Can a water softener leak during regeneration?

Yes, it can, and if the system runs for two or three hours during the regeneration process, it might leak. 

How can you tell if your water softener is clogged?

One of the most significant signs of a clogged water softener is the considerable change in the softness of the water. If there are deposits in the dishware, you might be facing this trouble. 

Should there be water in my water softener salt tank?

Ideally, the brine tank must never be full of water. Such a situation might lead to an overflow. 

Can you overfill a water softener with salt?

Adding too much salt to the water softener tank is not advisable. Adding excessive salt to your water tank can lead to salt bridging, buildup, or solidification. Such a buildup can prevent the regeneration process.

How full should a water softener tank be?

It’s recommended to keep the brine tank full to at least one-quarter of water all the time. The level should not be more than four to six inches lower than the top of the tank to ensure maximum efficiency.

Can a water softener flood a basement?

Yes. Due to water softener, many have experienced a flooded basement or other parts of their home.

How often should you clean a water softener brine tank?

Cleaning the brine tank once a year is enough, and it’s not very difficult to do this.


Water softener overflow is a common problem; thankfully, there are easy ways to fix it. In this article, we have listed the reasons and the steps you can use to correct the problem. We hope you find the article helpful.