Sump Pump Failed? What to Do and How to Prevent It
A sump pump only matters when you need it — and that's exactly when many fail. Here's how to respond and how to prevent the next one.
For thousands of Brant County homes, a sump pump is the last line of defence against a flooded basement. When it fails during a storm, water rises fast. Knowing what to do in the moment, and how to prevent failure, protects your home.
First steps when your sump pump fails
• Check the power first — a tripped breaker or unplugged pump is a common, easy fix.
• Look for a stuck float switch; if the float can't rise, the pump won't turn on. Free it if you safely can.
• Start removing water with a wet/dry vacuum or backup pump to slow the rise.
• Call for help if water is already pooling — our basement flooding response extracts and dries fast to limit the damage.
Why sump pumps fail
• Power outages: storms that cause flooding often knock out power at the same time.
• Stuck or failed float switch: the most common mechanical failure.
• Overwhelmed capacity: a pump too small for a heavy storm can't keep up.
• Age and neglect: most pumps last about 7 to 10 years, and debris or a seized motor ends them sooner.
• Frozen or blocked discharge line: if water can't get out, the pump runs but the basement still floods.
How to prevent the next failure
• Add a battery backup pump — the single best upgrade, because it runs when the power is out.
• Consider a water-powered or second pump for redundancy.
• Test it quarterly by pouring water into the pit until the pump kicks on.
• Keep the pit clear of debris and check the discharge line stays unobstructed.
• Replace ageing pumps before they fail rather than after.
Build a system, not a single point of failure
A sump pump is one part of keeping a basement dry. Pairing it with a backwater valve and good drainage — the heart of basement waterproofing — turns a single vulnerable pump into a resilient system. For the full picture, see our guide to preventing basement flooding in Brantford.