Spring Water Softener Maintenance Checklist

Open the brine tank and check the salt level. It should sit at least a third full — below this and the softener cannot regenerate properly. Top it up if needed. While the lid is off, look for a salt bridge: a hardened crust across the top of the salt that creates an air gap underneath, leaving the brine tank effectively empty despite looking full. Break it up with a broom handle if present.

Check for mushing at the bottom of the tank — a sludge of fine salt particles that can block the brine draw tube. If there is significant sludge, flush the tank according to the manufacturer's instructions.

Confirm the bypass valve is in the service (normal operating) position — not accidentally left in bypass from winter plumbing work or a boiler service. A softener left on bypass supplies hard water to the whole house without any visible indication that something is wrong. If you have seen limescale returning recently, checking the bypass position is the first thing to do.

Look at how often your softener has been regenerating over winter. A timer-based softener set to regenerate every three days that has been regenerating every day suggests either a significant increase in water use or that the resin capacity has dropped. A metered softener that is regenerating more frequently than its previous pattern points to the same issue. Either way, note it and mention it at the next service visit.

Run a glass of water from a tap the softener supplies and check for lather with soap — soft water lathers freely with very little soap. If lathering is poor, or if you can see any limescale on kettle elements, shower screens, or taps, the softener output may have declined. A water hardness test strip (available from plumbing suppliers for a few pounds) gives a quick numerical confirmation.

Manufacturers recommend annual servicing for most residential softeners. The service includes checks and lubrication of the control valve, resin cleaning, brine draw testing, and a full operational check. If your last service was over 12 months ago, book one. Spring is a practical time — any issues found can be fixed before summer when water use typically rises again.