How to add salt to a water softener

We'll add salt to the brine tank so the softener keeps working.

Category
How-to · Home plumbing
Time
5–10 min
Last reviewed
What you'll need
  • Water softener salt (pellets or crystals)
  • Broom handle (to break salt bridges if needed)

At a glance

  • Check the brine tank—the smaller tank next to the mineral tank—and add salt when the level is low.
  • Use pellets or crystals designed for water softeners; avoid rock salt with high dirt content.
  • Fill the tank to at least half full—never let it run completely empty.
  • Do not overfill—leave 4–6 inches of space below the brine well to prevent salt bridging.
  • If the salt forms a hard bridge, break it up with a broom handle before adding more salt.
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Steps

Goal: Keep the brine tank full so the softener regenerates properly.

  • Open the brine tank lid. Check the salt level.
  • Good: Salt is above half—add when it drops. Bad: Salt is low or bridged. Proceed to Check for bridging.

Check for bridging

Goal: Break any salt bridge before adding more salt.

  • Tap the tank. If it sounds hollow, break the bridge with a broom handle.
  • Good: Salt falls into the water. Proceed to Add salt.
  • Bad: No bridge—proceed directly to Add salt.

Add salt

Goal: Fill the tank with the correct salt type.

  • Use pellets or crystals for water softeners. Pour until the tank is at least half full. Leave 4–6 inches below the brine well.
  • Good: Tank is half full or more. Proceed to Verification.
  • Bad: Wrong salt type—use softener salt; rock salt may clog the system.

When to get help

Call a plumber or water treatment specialist if:

  • The softener is not regenerating or you still have hard water after adding salt.
  • The brine tank has a persistent odor or the water is very dirty.
  • The softener displays an error code or alarm.

Verification

  • Salt level is at least half full.
  • No salt bridge (bridge broken if present).
  • Lid is secure. Check again in a month.

Reviewed by Blackbox Atlas

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