Homeowners who notice a salty taste at the kitchen tap often assume the softener has failed. Sometimes that is true, but softened water can also taste different from what you are used to without anything being wrong. The job is to sort out which case you have before you pay for a service visit or change how the house is plumbed.
Start with what the taste is telling you
A softener works by swapping the calcium and magnesium in your water for sodium or potassium. That exchange adds a small amount of dissolved mineral, so softened water can taste slightly different, and some people describe it as slick or soft on the tongue. This is normal. A taste you would call salty, brackish, or obviously briny is a different matter, and it points you toward the checks below.
Note whether the taste shows up only at the hot tap, only at the cold tap, or at both. Hot water is the first place to look if the taste is strong, because a water heater can concentrate what is already in the line and because some installations feed the hot side differently from the cold side.
Check whether the drinking tap is on the softened line
Many households keep one cold tap, often at the kitchen sink, on the unsoftened supply for drinking and cooking. If that tap was set up that way, it will taste like your unsoftened water, which may taste different from the softened water at the other taps. Find out which tap is which before you decide something is wrong. Ask whoever installed the system, or trace the line from the bypass valve, to confirm where each supply goes.
The reverse is also possible. A bypass valve left partly open can mix raw and softened water at a tap, which can make the result taste odd in an unpredictable way. If the taste changes with the weather or with how much water is running, look at the bypass handles and make sure they sit in the same position they were in when the system was installed.
Look at the control and the brine setting
Open the control display and confirm the time, the regeneration schedule, and the salt dose setting. A dose set higher than the job needs adds more sodium to each batch of softened water than the household expects. Compare what the display shows against the setting on the installer's paperwork. If they do not match, the difference is worth a written question to the installer, not a guess.
Check the brine tank too. Salt that sits in the tank for a long time can form a crust, and a crust can keep the unit from regenerating fully, which changes how much hardness is removed. That is a separate fault, but it can leave the water tasting off, so note what you see in the tank before you assume the problem is the taste alone.
Decide when the taste matters for health
If anyone in the house is following a low-sodium diet for a medical reason, ask their doctor how softened water fits into that plan, and keep a separate unsoftened cold tap for drinking if the doctor advises it. This page does not cover what a particular person should drink, and the family and the doctor should make that call.
What to ask the installer or service company
When you call, describe where the taste shows up, whether it is the hot or cold tap, and whether the drinking line is separate. Ask them to confirm the salt dose setting, the regeneration schedule, and whether the bypass valve is fully in service position. Ask what sodium addition you should expect at your hardness level, and ask them to show you how to read the control so you can check it yourself next time.
If the taste persists after these checks and the setting matches the paperwork, the next step is a written service request that names the symptom, the tap, and the settings you confirmed. A clear description like that tells the technician where to start and keeps the visit focused.