Short cycling means the pump turns on and off every few seconds while water runs. It usually points to a pressure tank that lost its air charge, a leak, or a worn pressure switch. A pump that won’t shut off often means a weak pump, a low well or a broken pipe. Both wear out pumps, so get it checked.
Updated October 2026
Safety first: well pumps run on 230/240-volt circuits. Don’t open the pressure switch, control box or well cap wiring.
Why does my well keep clicking on and off?
A healthy system runs the pump for a while, fills the tank, then rests. When the tank can’t hold enough water, the pump starts and stops in quick bursts.
Each start stresses the motor. Constant clicking can shorten pump life, so it’s worth fixing soon.
If the pump won’t shut off
- Close all taps and check for a running toilet or dripping outdoor spigot.
- Watch the gauge. If it stalls below the shutoff point, the pump or well may not keep up.
- If the pump runs nonstop with no water in use, turn the breaker off to protect it.
Likely causes
| Likely cause | What you can safely check | Needs a licensed pro? |
|---|---|---|
| Tank lost its air (waterlogged) | Fast clicking; the power-off air check on the tank label | Yes, to recharge or replace |
| Leak in the house | Running toilets, dripping taps | A licensed plumber |
| Leak in the buried line | Wet or soft ground; pump runs with taps closed | Yes |
| Worn pressure switch | Chattering at the switch (don’t open it) | Yes |
| Leaking check valve | Gauge drops with all taps closed | Yes |
| Weak pump or low well | Gauge never reaches shutoff | Yes |
The tank air check is covered step by step on the pressure tank page. Always turn the pump power off first and follow your tank’s label.
Typical costs (estimates)
- Pressure switch: about $100 to $350.
- Pressure tank: about $300 to $700 on average, up to $2,500.
- Pump replacement: about $1,000 to $2,500 nationally, more for deep wells.
When you need a licensed professional
- Clicking continues after house leaks are ruled out.
- The tank shows water at the air valve or has no air charge.
- The pump runs without reaching its shutoff pressure.
Wisconsin rules require a DNR-licensed pump installer for pump and pressure-tank work on a drinking-water well; check with DNR if you’re unsure.
Related
- Pressure tank problems
- Low or fluctuating pressure
- Pump running but no water
- How long well pumps last
