Turn off the water softener and close the inlet valve before you drain
The first step is to stop water from entering the tank. Locate the inlet valve — the pipe bringing water into the softener — and turn the handle perpendicular to the pipe. This shuts off flow. Then switch the softener itself to the off position if it has a power switch or control panel. If your unit is plugged in, you can also unplug it.
Wait a few minutes for any pressure in the tank to settle. You should hear the system go quiet. This prevents water from spraying when you open the drain valve.
Key Takeaways
- Close the inlet valve and turn off power before opening any drain valve to prevent water pressure from spraying.
- Most water softeners have a drain valve at the bottom of the tank that you open by hand or with a wrench, depending on the valve type.
- Place a bucket or run a hose to a floor drain to catch water, which may contain salt or resin particles.
- After draining, flush the tank with fresh water by reopening the inlet valve briefly, then drain again to remove sediment.
- Refer to your softener's manual for the exact location of valves, as placement varies by brand and model.
Locate and open the drain valve at the bottom of the tank
The drain valve is usually a small fitting at the lowest point of the softener tank. On some models it is a straightforward ball valve with a handle you turn by hand. On others it is a compression fitting that requires a wrench — typically a 1/2-inch or 5/8-inch wrench depending on the valve size.
If the valve has a handle, turn it a quarter turn counterclockwise to open. If it is a compression fitting, use a wrench to loosen the nut slowly. Water will begin to flow out. Do not open it all the way at first — crack it open slightly to control the flow and avoid splashing.
Once you confirm water is draining steadily, you can open the valve fully. The tank will empty over several minutes depending on its size.
Direct the water to a drain or bucket
Water from a softener tank often contains salt residue, resin particles, or sediment. Do not let it run across your floor or into a yard where it could damage plants. Place a bucket underneath the valve if the tank is small, or attach a garden hose to the valve outlet and run it to a floor drain, sump pump, or outdoor area away from landscaping.
If your drain valve does not have a threaded outlet for a hose, you can place a bucket directly under the valve opening. Check the bucket periodically and empty it as needed.
Flush the tank with fresh water after draining
Once the tank is empty, turn the inlet valve back on briefly to let fresh water fill the tank a few inches. This rinses out salt, resin dust, and other particles left behind. Then close the inlet valve again and open the drain valve to let this rinse water out.
Repeat this flush-and-drain cycle two or three times until the water coming out looks clear and does not smell like salt. This prevents sediment from settling back into the tank or clogging your plumbing when you turn the system back on.
Close the drain valve and restore power
Once the tank is empty and flushed, close the drain valve by turning the handle clockwise (if it is a ball valve) or tightening the nut with a wrench (if it is a compression fitting). Do not overtighten — snug is enough to stop leaks.
Open the inlet valve fully by turning its handle parallel to the pipe. Water will refill the tank. Listen for the softener to resume its normal operation or display. If the unit has a control panel, it may show a status light or message. Plug the softener back in or switch it on if you turned off power earlier.
When to drain a water softener
Most homeowners drain a softener only when performing maintenance, replacing the resin bed, or preparing the unit for storage or removal. You do not need to drain it as part of regular upkeep. However, if you notice sediment in your water, a strong salt smell, or if the softener has been sitting unused for several months, draining and flushing can help restore performance.
If your softener is leaking from the tank itself (not from a valve connection), draining it first makes the repair easier and prevents water damage while you work. Always consult your manual for the manufacturer's guidance on maintenance intervals.
Frequently Asked Questions
Can I drain the softener while it is running?
No. Always turn off the unit and close the inlet valve first. Draining while the system is pressurized can cause water to spray forcefully and may damage the valve or tank connections. Waiting a few minutes after shutdown allows pressure to release safely.
What should I do if the drain valve is stuck or will not open?
explore penetrating oil like WD-40 around the valve fitting and wait 15 to 30 minutes for it to soak. Then try opening it again with a wrench, turning slowly. If it remains stuck, do not force it — you risk breaking the valve. Contact a water softener service technician to avoid damage.
Is the water that drains from the softener safe to use?
The drained water contains salt and resin particles, so it is not safe to drink or use on edible plants. It is safe to run down a floor drain or into a sump pump. If you must direct it outdoors, choose an area away from gardens or landscaping that is sensitive to salt.
How often should I drain my water softener?
Most softeners do not need regular draining. Drain only when replacing the resin, performing maintenance, or if you notice sediment or salt buildup. If your softener sits unused for more than a few months, draining and flushing before restarting can help remove stale water and particles.
Do I need to add salt after draining?
No. Draining the tank does not remove the salt from the brine tank (the separate tank that holds salt pellets or crystals). Check your brine tank separately and refill it if the salt level is low. The main tank holds water and resin, not salt.