A water softener usually fails quietly. The first sign is often not an alarm but the return of everything you installed it to stop: white scale on faucets, spotted glass, stiff laundry and soap that will not lather.

United Plumbing provides water softener repair in Fort Myers, Cape Coral, Estero, Bonita Springs, Naples and across Lee County. This guide covers how to tell whether your softener is really not working, the common causes, what is safe to check yourself, and how to weigh repair against replacement. If you want the preventive side first, see our water softener maintenance guide.

Signs Your Water Softener Is Not Working

• Scale is back: white crust on faucets, showerheads and the inside of the kettle.
• Spotted dishes and glassware: film or spots after the dishwasher that were gone when the softener worked.
• Dry skin and flat soap: soap that will not lather and skin that feels tight after a shower.
• Stiff laundry: towels and clothes that come out rough.
• The salt never goes down: a brine tank that stays full for months can mean the softener is not regenerating.
• Constant draining or a blank display: water running to the drain all the time, or a controller showing an error or nothing at all.

Common Problems and Likely Causes

What You Can Safely Check First

Before you call, a few quick checks solve a surprising number of cases and give a plumber useful information if they do not.

• Power: confirm the unit is plugged in and the outlet has power. After an outage, the clock and settings may need to be reset.
• Bypass: make sure the bypass valve is in the service position and not left in bypass.
• Salt: check that there is salt in the brine tank. A hard crust with an empty space underneath is a salt bridge, a common cause that a plumber can clear and trace.
• Settings: confirm the hardness and regeneration settings still match your water and household.
• Test the water: test hardness at a tap after the softener. Our guide to reading water test results explains what the numbers mean.

If those checks look fine and hardness is still getting through, the cause is usually inside the valve, injector or resin.

A repair that fixes the cause is worth more than a replacement that repeats the problem. Always ask why the softener failed, not just what failed.

Repair vs Replace

There is no single age or price that settles it. These are the factors that matter most.

Many softeners run for a decade or more with good care, so age is only one input. If you are leaning toward replacement, our guides to water softener cost and financing and what to expect during installation cover the next steps, and salt vs salt-free helps you choose what to replace it with.

When To Call A Plumber

Call a licensed plumber if you see leaks, water running to the drain constantly, no regeneration after the basic checks, a noisy or stuck valve, or hardness that keeps getting through. These involve the valve, injector, resin and plumbing connections, where a wrong move can cause leaks or damage. United Plumbing diagnoses the cause first and gives you a written upfront quote before any repair or replacement. Financing is available on qualifying installations, subject to credit approval.

Sources and Further Reading

• Water Quality Association, water softening resources: wqa.org
• U.S. EPA, drinking water overview: epa.gov
• More guides from United: Fort Myers plumbing articles.

About the author: United Plumbing Inc has been the Fort Myers plumber for residential, commercial and new construction customers since 1980. Licensed technicians repair and replace water softeners across Fort Myers, Cape Coral, North Fort Myers, Estero, Bonita Springs, Naples and the barrier islands. Florida License CFC 1433130. Head office: 3560 Teeside Lane, Fort Myers, FL 33916. Reviewed by United Plumbing's service management team. Last updated October 2026.