Why Is My Water Softener Tank Overflowing?

If your water softener tank is overflowing, it could be due to a number of different issues. The most common causes of water softener tank overflows include a broken pipe or hose, clogged sediment filter, incorrect salt setting in the brine tank, too much water flow into the system, and low-grade salt being used.

Why Is My Water Softener Tank Overflowing?

Why Is My Water Softener Tank Overflowing
Water Softener Tank Overflowing

Clogged Brine Screen or Injector: A common cause of overflowing water softener tanks is the clogging of either the brine screen or the injector. The brine screen helps to keep any dirt, debris, and salt chunks from entering your tank and prevents them from blocking the flow of water into the tank. The injector also provides a steady stream of salt solution into your softener tank. If either of these two components becomes clogged, your water softener will not be able to properly regenerate and the tank will overflow.

Sticking Brine Float: If the brine float is stuck in the “UP” position, it will continually fill with water and cause an overflow. To resolve this issue, locate the brine float (a white cylinder located near the top of your water softener tank) and press down gently until it clicks into place. If pressing on the float does not work, you may need to replace it.

High Salt Setting: If your water softener is set to a high salt dosage, more water will be used to regenerate the tank which can cause an overflow. To adjust the salt setting, locate your control valve (typically located near the base of the tank) and turn the knob or lever in order to reduce the amount of salt used to regenerate.

Clogged Drain Line: If your water softener has a clogged drain line, it can also cause an overflow issue as the tank is unable to pump out the water when regeneration occurs. To fix this issue, locate and clean the drain line with a wet-dry vacuum or air compressor. If cleaning the line doesn’t work, you may need to replace it.

Dirty Brine Float: If your water softener tank is overflowing, the most common cause could be an issue with the brine float. The brine float is a part of the system that monitors how much salt remains in the tank, and when it becomes stuck or gets clogged up due to dirt or debris, it can prevent the proper flow of brine solution into the tank. This can cause an overflow as the brine solution builds up in the system. To fix this issue, clean out any dirt or debris that may be stuck in the brine float; it might also require replacing your brine float if it’s been damaged beyond repair.

Kinked or Restricted Drain Line: A kinked or restricted drain line is often the cause of a water softener tank overflowing. The water softener’s discharge pipe may be located in an area that can easily become kinked or clogged with debris, preventing proper draining. Check your drain line to make sure it is free from any obstructions and it has not become kinked.

Worn Main Piston: The main piston inside the water softener tank plays an important role in controlling how much water is released during operation. If this part becomes worn, it can cause more water to be released than necessary and result in overflowing. Replacing or repairing the piston should fix this issue.

Leaking Brine Valve: One of the most common reasons for a water softener tank overflowing is leaking brine valve. This is caused by normal wear and tear on the valve, which can cause it to become loose over time or crack altogether. If your brine valve is leaking, you should check for a cracked O-ring or broken part before replacing it entirely as this can help you save on costs. Additionally, make sure the valve is tight and there are no air bubbles in the line.

Low Water Pressure: Low water pressure is one of the most common causes of a water softener tank overflowing. If the pressure isn’t strong enough, it can cause too much softening agent to be released into the softened water. Usually, low pressure is caused by a clogged line or a malfunctioning pressure valve. To determine whether this is your problem, first check the pressure gauge on your water softener. It should register at least 20 psi (138 kPa). If it doesn’t, contact a professional to fix the issue.

How To Stop Your Brine Tank From Overflowing?

1. Check the drainage hose: Make sure that the discharge hose is properly connected to a drain and not clogged with debris.

2. Check for high water levels: Take out and inspect the brine tank from time to time, looking for any signs of high water levels or accumulation in the bottom of the tank.

3. Adjust the float valve:  If the water levels are too high, adjust the float valve to reduce the amount of water entering the brine tank.

4. Clean out your salt bridge:  A layer of compacted salt may build up in your brine tank and cause it to overflow; this is known as a “salt bridge”. To break up the salt bridge, you can use a broomstick or other long object to stir it up and dissolve it in water.

5. Check for leaks: Make sure that the brine tank is not leaking from any of its connections or seals; if necessary, replace these parts with new ones.

6. Check the control valve:  The brine tank overflow is most likely caused by a faulty brine refill control valve. To test it, turn off the power and inspect all connections for signs of damage or corrosion. If necessary, replace this part with a new one.

How To Un-Stick A Stuck Water Softener Bypass?

How To Un-Stick A Stuck Water Softener Bypass
Un-Stick A Stuck Water Softener Bypass

1. Locate the water softener bypass, which is usually connected to the control valve.

2. Turn off the power or shut off the water supply from the main line.

3. Unscrew and remove the handle of the bypass with a screwdriver or wrench.

4. Inspect for any visible signs of damage or corrosion, such as rust or cracks.

5. If there is no visible damage, remove the packing nut with a wrench pull out the stem.

6. Clean outside of the parts with steel or a wire brush before reassembling them to prevent further clogging from occurring in the future.

7. Apply plumber’s grease around the stem before re-inserting it back into its place and ensure that it is properly secured using a wrench.

8. Reattach the handle and packing nut, being careful not to overtighten them as this may cause damage or further clogging of the system.

9. Turn the power or main water supply back on and recheck to make sure that the system is working properly without any leaks. If there are any, shut off the water supply immediately and fix them as soon as possible.

10. Finally, be sure to check your system regularly to prevent future occurrences of overflowing and clogging. This will help you save time, money, and frustration in the long run.

How To Bypass A Water Softener With Two Bypass Knobs?

How To Bypass A Water Softener With Two Bypass Knobs
Bypass A Water Softener With Two Bypass Knobs

1. Unscrew the bypass knobs from both sides of your water softener tank. The knobs are usually marked as “in” and “out”.

2. Pull off the hoses attached to each knob so that they can be set aside. Set them in a safe place where they will not be damaged.

3. Connect the two hoses together, so that they form a loop around the water softener tank. This creates a bypass for your water system, allowing it to flow directly into your home without passing through the softener tank.

4. Turn on the main valve of your household plumbing system and check for water pressure. If the water is running smoothly, the bypass was successful.

5. After you have confirmed that the bypass works, turn off the main valve and reattach the knobs to your water softener tank so that they are properly sealed and not leaking.

Should I Remove The Extra Water From My Brine Tank?

No, you should not remove any excess water from the brine tank. It is normal for there to be some overflow from the tank due to the regeneration process that takes place in a water softener. The excess water will eventually be drawn back into the system, so removing it could cause problems with your system’s performance. If you are concerned about the overflow, you can adjust the system settings to reduce the amount of water used in regeneration. Additionally, if the overflow is a recurring problem, it may be an indication that there is an issue with your system that should be addressed by a professional. It’s important to properly maintain your water softener to ensure optimal performance.

How To Clean Your Kinetico Brine Float Assembly?

How To Clean Your Kinetico Brine Float Assembly
Clean Kinetico Brine Float Assembly

1. Disconnect the power to your water softener system and shut off the bypass valve, if present.

2. Unscrew the brine tank lid.

3. Pull out the brine float assembly from inside the tank and inspect for any obstructions or debris stuck in it such as salt bridging or a clogged air check.

4. Clean the float assembly with a soft brush or cloth to remove any debris.

5. Place the brine float back into the tank, making sure that it is fully seated at the bottom of the tank.

6. Replace the lid and turn on the power supply to your water softener system.

7. Test the brine float assembly by running a manual cycle and checking that it is functioning properly.

8. If the tank continues to overflow, it’s best to contact a professional for further inspection and repair.

How To Replace A Water Softener Brine Line?

1. Shut off the water supply to the water softener tank.

2. Unscrew and remove the brine line from the bottom of the tank, being careful not to damage it.

3. Measure and cut a new length of tubing equal to or slightly longer than the old one, using a hacksaw or PVC cutter.

4. Connect one end of the new brine line to the bottom of the water softener tank, then use a screw clamp to ensure it is secure.

5. Place the other end in a bucket and fill with water, until air bubbles stop coming out.

6. Secure the tubing to the floor so it cannot move around.

7. Open the water supply and check for any leaks.

8. Turn on the softener to test if it is working properly.

9. Empty the bucket of water after testing, and enjoy your new brine line!

10. If you experience any problems or have any questions, be sure to contact a professional plumber.


What is the downside of the water softener?

Every water softener is equipped with a tank that stores salt, which acts as an ion exchange for hard minerals in the water. In some cases, this tank can become overfilled and cause the unit to overflow. This can happen due to a variety of reasons, including clogged drain lines, failed valves, or incorrect settings. If your water softener tank is overflowing, it’s important to diagnose and fix the issue as soon as possible. Failure to do so can lead to costly repairs or the replacement of the entire unit.

Is it ok to drink softened water?

Is it ok to drink softened water?
Drink softened water

Yes, water from most water softeners is safe to drink. However, if you have a potassium chloride-based softener, it’s important to check the level of sodium in your drinking water before consumption. High sodium levels can be harmful for people with certain medical conditions like heart problems or high blood pressure.

How can I soften water at home?

Boiling the water is often the most effective way to soften it. However, this method requires a large amount of energy and takes time. Additionally, minerals that were originally dissolved in the water can start to accumulate and form sediment on surfaces.

What are different types of water softeners?

Reverse osmosis
Reverse osmosis
Ion Exchange
Ion Exchange

Water softeners come in two main types: ion exchange and reverse osmosis. Ion exchange is the most common type, where salt-based resin beads act as a filter to attract and absorb minerals from the water. Reverse osmosis systems use pressure to force water through a membrane, which catches the salts, ions and other particles that can cause water hardness.


If the water softener tank is overflowing, it could be due to a variety of reasons. It’s important to diagnose and address the issue as soon as possible, as an overflow can cause unnecessary damage and waste valuable resources. Common causes of an overflowing water softener tank include a clogged discharge pipe, malfunctioning float valve, or excessive regeneration frequency. It’s best to contact a certified professional to diagnose and repair your water softener, as these repairs may require specialized tools and knowledge. Taking the proper steps to maintain your system will help prevent overflows in the future.

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