Sump Pump Maintenance: A Seasonal Checklist

A sump pump that's been quietly sitting for months is one of the most common points of failure in a basement flood — not because the pump itself is bad, but because something small went unnoticed: a stuck float switch, a clogged inlet screen, or a battery backup that quietly died months ago.

Twice-a-Year Checklist

• Test it manually. Pour a bucket of water into the pit and confirm the pump activates, moves water out, and shuts off properly.
• Check the float switch. Make sure it moves freely and isn't caught against the side of the pit or debris.
• Clean the pit and inlet screen. Sediment and debris buildup is a common cause of reduced pump performance over time.
• Inspect the discharge line. Confirm it's directing water well away from the foundation and isn't frozen or blocked outside.
• Test the battery backup, if you have one. Batteries degrade over a few years even if never used, and this is the single most common reason a backup system fails right when it's needed.

Why the Backup Battery Matters So Much

The most common sump pump failure pattern in Central Indiana isn't the pump breaking — it's a power outage during the exact storm that's pushing the most water into the pit. A primary pump with no working battery backup is essentially a single point of failure for the whole system during the events that matter most.

Signs Your Pump May Need Replacement, Not Just Maintenance

• It runs constantly even without significant rainfall, suggesting it's struggling to keep up.
• It makes grinding or rattling noises during operation.
• It's more than 7-10 years old — the typical service life for most residential units.

Frequently Asked Questions