Common Pond Pump Problems and How to Fix Them

Pond pumps work hard to keep water clear, moving, and healthy. But like any outdoor equipment, they can run into trouble. The good news? Most issues have simple fixes. Below are the most common pond pump problems and how to deal with them.

1. Pump Isn’t Running at All - Pond Pump Problems

What’s happening: The pump is silent, and there’s no water movement.

Check these first:

• Power supply: Make sure the pump is plugged in and the outlet works.
  Circuit breaker: Look for a tripped breaker and reset if needed.
• Timer settings: If your pump uses a timer, confirm it’s programmed correctly.
• Fix it: Replace damaged cords. If power checks out but the pump still doesn’t run, the motor may have failed and needs replacing.

2. Low Water Flow

What’s happening: Water moves slowly or barely at all.

Check for:

• Clogs: Debris in the intake, filter, or impeller can block water flow.
• Dirty pre-filter: A dirty foam filter can choke the pump.
• Kinks in hose: Look for pinched or twisted tubing.
• Fix it: Clean the pump intake and filter. Straighten hoses. If it still struggles, check the impeller for wear—replacements are usually easy to install.

3. Pump Hums but Doesn’t Pump - Pond Pump Problems

What’s happening: The pump makes noise but doesn’t push water.

What it means: The impeller might be stuck or broken.

Fix it: Unplug the pump. Take it apart and clean around the impeller. Look for grit, string algae, or buildup. If the impeller blades look worn or broken, replace the part.

4. Pump Runs Intermittently

What’s happening: The pump starts and stops on its own.

Possible causes for Pond Pump Problems:

• Overheating: Pumps in direct sun or shallow water can overheat.
• Low water level: If the water drops too low, the pump may shut off as a safety measure.
• Fix it: Place the pump deeper in the pond or shade it with rocks or plants. Top up water regularly, especially during summer.

5. Noisy Operation

What’s happening: The pump makes rattling or grinding sounds.

Check:

• Loose impeller: A worn shaft or bearing can cause rattling.
• Air in the system: Air bubbles or “dry runs” can make pumps noisy.
• Fix it: Remove and inspect the impeller. Re-seat it or replace if needed. To prevent air problems, ensure the pump is fully submerged and water surrounds it at all times.

Preventing Pond Pump Problems

Most pond pump issues come from dirt, debris, or low water. Clean the pump regularly, keep the pond clear of leaves and algae, and monitor water levels. These small steps go a long way in keeping your system running smoothly.

Need Help Finding Replacement Pond Pumps?

At LandscapeSupplyGuys.com, we carry pumps, filters and hoses for all kinds of water features. If you’re not sure what you need, get in touch—we’re happy to help.