Pipes & water supply

Well pump running constantly

A pump that never seems to shut off is a serious issue, usually meaning a major leak somewhere in the system, a failed pressure switch, or insufficient well yield.

Difficulty
Advanced
Time
30–60 minutes (diagnosis)
DIY cost
$0–$40
Pro cost
$300–$1500+

Symptoms

  • Pump motor runs nonstop, even with no fixtures in use
  • Pressure gauge stays low despite the pump running
  • Water bill or well output seems abnormally high
  • Pump housing feels hot to the touch

Likely causes

  • CommonSignificant leak somewhere in the plumbing systemA leak large enough to keep pressure low will keep the pump running continuously trying to compensate.
  • CommonFailed pressure switch stuck in the 'on' positionIf the switch fails electrically, it may never signal the pump to shut off even at proper pressure.
  • PossibleWell yield unable to keep up with demand (well running dry)If the well can't produce water as fast as it's being drawn, the pump runs continuously without building pressure.
  • PossibleFailing check valve letting pressure bleed away continuouslyA worn check valve can let water flow backward, preventing pressure from ever stabilizing.

What to do

  1. Turn off all fixtures inside and outside the house and see if the pump eventually shuts off; if it does, the issue is elevated demand or an open fixture rather than a leak.
  2. If the pump keeps running even with everything off, check for an obvious leak, such as a running toilet, open outdoor spigot, or visible pipe leak.
  3. Check the pressure gauge near the tank; if it stays low despite the pump running, this points to either a major leak, a failing check valve, or well yield issues.
  4. This is a situation where running the pump continuously risks motor damage from overheating, so shut it off manually if you can't quickly identify the cause.
  5. Have a well contractor test the well's yield if no leak is found and the pressure switch tests fine electrically.
  6. A continuously running pump wastes significant energy and risks burning out the motor, so treat this as an urgent issue rather than something to monitor casually.
  7. Once the cause is found (leak, switch, or yield), address it directly rather than just letting the pump run.

Tools and parts

  • None (mainly observation and testing)
Well pressure switch or check valveSearch: “well pump pressure switch”

When to call a pro

Call a well contractor promptly for a continuously running pump; this can indicate a serious leak, failing well, or equipment issue that risks damaging the pump.

Safety

Use caution

Shut off the pump if you can't identify why it's running continuously, since prolonged dry running or overwork can damage or burn out the motor.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.