Sump Pump Not Working? Causes and Fixes

Quick Checks When the Pump Will Not Run

Before assuming the pump is dead, rule out the simple problems.

• Confirm the pump is plugged in and the outlet or GFCI has power.
• Check the breaker has not tripped.
• Lift the float gently to see if the pump starts.
• Look for debris stuck under the float or inside the pit.
• Pour a bucket of water into the pit and watch whether the pump turns on and drains it.

Why Sump Pumps Fail

Most failures come down to a short list of causes.

• Stuck float switch: the pump never gets the signal to start.
• Clogged intake: silt or gravel blocks the pump.
• Failed check valve: water falls back into the pit and the pump cycles constantly.
• Worn motor: older pumps run until the motor burns out.
• Power loss: storms often knock out power exactly when the pump is needed.

When a New Pump Makes Sense

A simple clog or stuck float is a quick fix. A pump that is many years old, runs nonstop or has a noisy or overheated motor is usually worth replacing. A battery backup adds protection during outages.

See our sump pump services or read the emergency troubleshooting guide.

Frequently Asked Questions

Why does my sump pump run constantly?

A high water table, a stuck float or a failed check valve can keep it cycling. If it never stops, have it checked.

How long does a sump pump last?

Many last roughly 7 to 10 years depending on use and quality.

Should I get a battery backup?

It is worth considering if your basement floods during outages, since storms often cut power.

Can I pour bleach in the sump pit?

No. Harsh chemicals can damage the pump. Clean debris out instead.