Sump pumps
Pumps out water that reaches a pit.
Replaces or backs up the pump that empties the pit. It does not seal a crack or fix the slope outside.
Sump failure
Sump pump not keeping up
A sump pit in a Oakville basement that is filling, a pump that will not start, or a pit that overflows in a storm means water has reached the basin and is not leaving. The pump only moves water that is already there. It does not seal a crack or correct a slope toward the house. Overflow only during a power cut often means a missing battery backup.
Possible causes
- A pump, float, or discharge line that has failed
- No battery backup during a power cut
- More water reaching the pit than the pump can discharge
Repairs that are usually considered
When to call
A pit that is overflowing, or a pump that has stopped while water is still coming in, should be treated as urgent. If it fails only when the power is out, ask about a battery backup before replacing the whole system.
This is guidance, not an inspection.
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