A wet floor around a water softener is easy to blame on the softener, but the water can come from several places, and each one needs a different response. Before you call anyone, find the source. A service visit that starts with a clear answer about where the water is coming from takes less time than one that starts with guessing.
Dry the area and mark the edge
Wipe up everything you can see, then dry the floor and the outside of the tank and fittings with a towel. Press a dry paper towel against each joint, hose, and base. Put a strip of painter's tape or a pencil mark along the edge of any puddle so you can tell later whether it grew. Note the time, then look again in an hour and again the next morning. A drip that happens only during a regeneration cycle looks different from a steady seep that never stops.
Sort the water by where it sits
Most leaks fall into a few places. Start with the one that matches what you saw. Water at the top of the resin tank, around the lid or the control head, often points to a worn O-ring or a loose fitting at the top. Water at the joints where the inlet and outlet pipes meet the valve usually means a compression fitting or threaded connection has loosened or was never fully tightened. Water pooling beside or under the brine tank can come from the brine tank itself, from the brine line connection, or from salt that was packed too high and left wet. Water that appears only at the end of a cycle, around the drain hose, is more often a drain problem than a valve problem.
Check the drain line and the brine tank
Look at the drain hose from the control valve to the standpipe or drain. Check that it is secured and that its end sits in the drain with an air gap rather than being pushed tightly into it. A hose that has slipped out of place can spill onto the floor each time the unit drains. Next, look into the brine tank. Water standing higher than its normal level, or a float that sticks, can mean the tank is overfilling. Note the salt level and whether anyone has topped it up recently. Too much water in the brine tank can spill over its edge, so record this before you call.
Write down what you saw before you call
When you contact a service provider, a short written note saves time. Include where the water is, when it shows up (constant, only during a regeneration, or after a power outage), how large the wet area is compared with the last time you checked, the salt level, and whether anything has been bumped, moved, or serviced recently. Take a photo of the wet spot and of each joint you checked. Also note whether the water is clear, salty, or discolored, since that can help separate a supply leak from a brine leak.
Ask before anyone tightens anything
Ask the technician to show you the source before any part is replaced. Ask which fittings they tightened, which seals they replaced, and whether the drain hose was re-secured. Ask what the next check should look like, so you know what to watch for in the days after the visit. If someone else installed the unit, ask who is responsible for work on fittings they did not make. Keep the note and photos together so you can compare any later leak with the first one.
When to shut things off first
If water is actively running, not just dripping, close the shutoff valves on the supply lines to the softener, or the main shutoff if you cannot find them. If water is near the electrical outlet or the control box, turn off power to the unit before you touch it. Then call. A leak that is spreading across a floor with outlets or wiring nearby is a reason to get help quickly rather than waiting for a routine visit.