What should I do if my sump pump stops working after heavy rain?

If your sump pump stops working after heavy rain, first check power and the float switch, then call for emergency service if water is rising. The most common cause is a tripped GFCI outlet or a stuck float after the pump has run hard for hours. A pump that hums but doesn’t move water often has an obstructed impeller or a stuck check valve. If your unit is 7–10+ years old, replacement is usually more reliable than another repair. Gold Star offers 24/7 emergency sump pump service plus battery backup installations for outages, and our licensed plumbers serve homeowners across Long Island.

Try these quick checks if it’s safe to do so:

• Verify the outlet has power and reset the GFCI.
• Gently lift the float to see if the pump starts.
• Inspect the outdoor discharge for blockages or a frozen line.
• If power is out, a battery backup pump can keep water moving.

Never reach into the pit or standing water while the pump is plugged in. <br/> Updated: 2026-05-06 <br/> Need help in East Setauket, NY? Call (516) 200-4014 or book online.