A softener needs little attention, but it does need some. Salt runs out, settings drift after a power cut, and brine tanks collect sludge. A few checks by you and a service visit on the maker’s schedule keep it softening. This page explains both, and what to ask when you book a service.
Install Water Softener is an independent referral service, not an installer or plumber. When you send the form, your details go to an independent local water treatment pro who can contact you and prepare a quote.
How a softener uses salt
A salt-based softener holds resin beads that take calcium and magnesium out of the water. When the resin is full of hardness, the softener regenerates: it draws salt water, called brine, from the brine tank, rinses the resin and sends the hardness and used brine to the drain. NSF/ANSI 44, the standard for these softeners, covers resin regenerated with sodium chloride or potassium chloride. Without salt in the brine tank, regeneration cleans nothing and hard water passes straight through.
That is why so much of the upkeep comes back to the brine tank and the settings that decide when the softener regenerates.
What you can do yourself
Check the salt
Lift the lid of the brine tank and look at the salt level regularly, at a time that is easy to remember. The maker’s manual says how full to keep it and which salt to use. If you add salt, use the kind the manual names, and do not overfill past the level it gives.
Break up a salt bridge
Salt can form a hard crust over an empty space, so the tank looks full but no salt reaches the water. If the level has not moved in a long time, press gently on the surface with a broom handle. If it gives way, the bridge was the problem.
Check the settings after a power cut
Some control heads lose the time when the power goes. Check the clock and the hardness setting against what was programmed at install. If you do not know what the setting should be, your utility’s report or a water test gives the hardness, and a pro can set it.
Know your bypass
The bypass valve takes the softener out of the line. Use it if you need to work on the softener or if it leaks, and remember to turn it back to service afterwards. A bypass left open is one of the simplest reasons a softener stops working.
What a service visit covers
A service visit from a water treatment pro is about the parts you cannot see. What is included varies from pro to pro, so ask before you book. A thorough visit can cover:
- Testing the hardness of the water going into the softener and coming out of it
- Checking the hardness setting and the regeneration schedule against that test
- Cleaning the brine tank and removing sludge and old salt
- Checking the brine line, float and injector for blockages
- Checking the control valve, its seals and the drain flow
- Cleaning the resin, where the maker allows it
- Checking the bypass and the connections for leaks
- Explaining anything that needs repair or replacing, with options
The test before and after is the heart of the visit. If water coming out of the softener is soft, the system works; if not, the visit turns into finding out why.
| Task | Who does it | How often |
|---|---|---|
| Check the salt level | You | Regularly, as the manual says |
| Look for a salt bridge | You | When the salt level stops dropping |
| Check the clock and settings | You | After any power cut |
| Clean the brine tank | You or a pro | On the maker’s schedule |
| Test hardness in and out | A pro, or you with a test kit | At service, or when hard water returns |
| Service the valve, seals and resin | A pro | On the maker’s schedule |
Due for a softener service?
When your water changes
A softener is set for one hardness. If your water changes, the setting should too. City water hardness can also differ with the source that feeds your street: within one utility, groundwater and surface water can differ by several grains per gallon. Read your utility’s yearly report and compare it with the figure your softener was set for.
On a private well, EPA and CDC advise testing at least once a year, and again after flooding, nearby construction or any repair to the well. Ask the lab to include hardness and iron, and adjust the softener if they change. The well water page has more.
Sodium and the water heater
Salt-based softeners add sodium to the water in exchange for the hardness they remove, as water utilities explain. If you are on a sodium-restricted diet, utilities suggest talking with your doctor. Some homes keep one unsoftened tap for drinking; ask a pro whether that is practical in your plumbing.
Water utilities also commonly note that some softening systems can increase the corrosivity of the water, which can damage the anode in a tank water heater. A service visit is a good time to ask whether your settings suit your water and to have the heater’s anode checked on the heater maker’s schedule.
Signs a service is overdue
You do not have to wait for the softener to fail. These are signs it is worth booking a service rather than a repair later:
- Spots and soap scum are slowly coming back, even though there is salt in the tank
- You need more soap or detergent than you used to, which the U.S. Geological Survey links to hard water
- The brine tank has a layer of sludge or dirty water at the bottom
- The salt level drops much faster or much slower than it used to
- You cannot remember when the softener was last looked at, or what hardness it is set for
Keep a simple record
A note taped inside the brine tank lid, or a page on your phone, makes every later visit easier. Write down the make and model, the date it was installed, the hardness figure it was set for and where that figure came from, the salt you use, and each service with what was done. When a pro comes out, that record answers half their questions before they ask, and it shows quickly whether a problem is new or has been building.
Filters and other systems need upkeep too
If a filter was installed with the softener, it has its own schedule. Follow its maker’s guidance, and ask at the softener service whether the filter is due too. A salt-free conditioner is a different technology from a salt-based softener; ask the installer what upkeep it needs and what it is certified for. The salt-free page explains the questions.
Questions to ask before you book a service
- What does the visit include, and will you test hardness before and after?
- Do you service my make and model, and carry its parts?
- Will you clean the brine tank, and what do you do with the old salt?
- What hardness will you set, and from what figure?
- If something needs repair, will you explain it and give options in writing?
- Do you also service the filter or other equipment on the same line?
- What should I check myself between visits, and what should I leave to you?
If the softener has already stopped working, start with softener repair, which lists the signs and the safe checks. If you are thinking of a new system instead, see softener replacement.
Questions people ask
How do I care for a water softener?
Keep salt in the brine tank as the manual says, break up any salt crust, check the clock and settings after a power cut, know how to use the bypass, and have it serviced on the maker’s schedule.
How do I clean a brine tank?
Put the softener in bypass, scoop out the old salt and sludge, rinse the tank, then refill with the salt the manual names. If the manual gives its own steps, follow those. A pro can do it during a service.
Does a water softener need to be serviced?
Yes. The owner’s checks keep it running, and a service visit checks the parts you cannot see. Follow the maker’s schedule for how often, and book sooner if hard water signs come back.
What are the downsides of using a water softener?
Salt-based softeners add sodium to the water, need salt topped up and send rinse water to the drain when they regenerate. Utilities note some can make water more corrosive to water heater anodes.
Can I find a softener service near me through this site?
You can ask through this site. Send the form with your ZIP code and choose Repair or service. We pass your request to an independent local pro who can contact you about the visit.
