How often should I have my basement sump pump and drainage system inspected if I live in a flood-prone area of Moncton?

In a flood-prone area of Moncton, you should inspect your sump pump and drainage system at least four times per year — once each season — with the most critical inspection happening in late February or early March before spring thaw begins. For homes in areas like the Mapleton, McLaughlin, or low-lying Riverview areas where the water table stays high year-round, quarterly inspections are the minimum, not the maximum.

The late winter inspection (February to early March) is the most important of the year. Spring thaw in the Greater Moncton area typically begins in March and peaks in April, bringing massive snowmelt and a rapid rise in the water table. Your sump pump will work harder during this 8-to-10-week period than the rest of the year combined. Before thaw hits, confirm the pump activates by pouring water into the pit until the float switch triggers. Check that the float switch moves freely — debris, silt, and mineral deposits can jam it. Verify the check valve on the discharge line is functioning (you should hear it close when the pump shuts off). Inspect the discharge line exit point outside — it must be clear of ice, snow, and debris, and the water must drain away from the foundation.

The spring inspection (May) happens after the peak water period. This is the time to assess how the system performed. Look inside the sump pit for accumulated silt, gravel, or iron ochre deposits (orange-brown sludge). If you see iron ochre, the system needs a cleanout — this bacterial and mineral deposit is common in parts of Moncton and clogs weeping tile and pump intakes over time. Clean the pit, remove any debris, and check the pump screen or intake for blockages.

The summer inspection (July or August) is a general maintenance check. NB summers bring 70 to 85 percent relative humidity, and even though the water table may drop slightly, humidity-driven condensation on cool basement surfaces keeps the system relevant. Test the pump, check the battery backup (if you have one — and in flood-prone Moncton, you should), and ensure the dehumidifier is running and draining properly.

The fall inspection (October or November) prepares the system for winter. Post-tropical storms and heavy fall rain can push water tables up before freeze-up. Confirm the pump works, test the backup battery charge, and insulate or protect the exterior discharge line from freezing. A frozen discharge line renders the entire system useless — the pump runs but water has nowhere to go, burning out the motor.

Battery Backup Maintenance

If your system includes a battery backup pump — and it should in flood-prone Moncton — test the backup quarterly by unplugging the primary pump and watching the backup engage. Check the battery terminals for corrosion and confirm the charger is maintaining a full charge. Replace the battery every 3 to 5 years proactively. A dead backup battery discovered during a March power outage is an expensive lesson.

Professional Inspection

Beyond your own quarterly checks, having a professional plumber or waterproofing contractor inspect the full system every 1 to 2 years is worthwhile in a flood-prone area. A professional can camera-inspect weeping tile for clogs or collapse, verify the pit depth and capacity are adequate, check pump sizing against actual water volume, and identify early signs of iron ochre buildup or system degradation that are hard to catch visually.

Budget $150 to $300 for a professional inspection. Compare that to the $10,000 to $30,000 cost of repairing water damage to a finished basement, and it is one of the best-value maintenance items you can schedule.

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• Gionetterenovations
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