A failed sump pump during heavy rain or spring thaw can leave your London Ontario basement flooded. Sump pumps remove groundwater from the sump pit and direct it away from the foundation; when they stop working, water can seep in quickly. Our 24/7 emergency plumbing dispatch connects you with plumbers who repair and replace sump pumps across London, St Thomas, Strathroy, Woodstock, Ingersoll, and Dorchester—and who can help with battery backups and flood cleanup advice.
Signs Your Sump Pump Needs Repair
- Pump runs constantly and never shuts off
- Pump doesn't run when it should (no sound or action when water is in the pit)
- Loud grinding, rattling, or unusual noises
- Water in the sump pit rising without the pump activating
- Water backing up or overflowing from the pit during rain or thaw
- Circuit breaker tripping when the pump runs
If your basement is already flooding, turn off power to the pump and the area if it's safe, and call for emergency service. For water from a burst pipe or sewer backup instead of groundwater, our plumbers handle those too—see our emergency plumber London page for an overview of all services.
What To Do When Your Sump Pump Fails
- Stay safe – Don't stand in water if the pump or any electrical equipment is nearby; turn off power to the pump and the basement circuit if it's safe to do so.
- Remove valuables and limit damage – Move items off the floor; use a wet-dry vacuum or towels if the water is minimal while you wait for a plumber.
- Check the discharge line – If the pump runs but water isn't leaving the pit, the discharge pipe may be frozen or blocked. A plumber can clear or repair it.
- Call for sump pump repair – Our dispatch can connect you with a plumber who will diagnose the pump, repair or replace it, and advise on battery backups for power outages.
Why Sump Pumps Fail in London Ontario
London and the surrounding region see heavy rain and spring thaw that can overwhelm a weak or aging pump. Sump pumps typically last 5–10 years; older units are more likely to fail when you need them most. Power outages during storms leave battery-free pumps unable to run. Discharge lines can freeze in winter or get blocked by debris. Float switches can stick or fail. Sediment in the pit can clog the pump. Regular testing (pour water into the pit and confirm the pump runs) and a battery backup can reduce the risk of basement flooding. When failure happens, our sump pump repair London network is available 24/7.
For other plumbing emergencies—drain cleaning, clogged drain, water heater, or leaking pipe—our plumbers can help with those too.
Sump Pump Repair and Replacement
A plumber can clean the pit and pump, repair or replace the float switch, clear the discharge line, or install a new pump if the unit is beyond repair. Adding a battery backup pump ensures that when the power goes out during a storm, you still have protection. We connect you with licensed plumbers who serve London Ontario and nearby communities for sump pump repair and related basement plumbing.
For sump pump repair in London Ontario, call our 24/7 dispatch or request help online. We serve London, St Thomas, Strathroy, Woodstock, Ingersoll, and Dorchester.
Get Help Now
Don't wait for the next storm. If your sump pump isn't working or you need a repair or replacement, call our 24/7 emergency plumbing dispatch for sump pump repair in London Ontario, or request help online.