Storms often bring heavy rain, flooding risks, and the looming possibility of a power outage. A sump pump relies on electricity to power its motor, so when the lights go out, the pump may stop working unless you have a backup plan. Without power, a sump pump can fail to remove water, increasing the risk of basement flooding and property damage.

What happens during a power outage?

In most homes, a standard sump pump is wired to the house’s electrical system and will not run during an outage. If the storm continues and groundwater rises, standing water can accumulate in basements, crawlspaces, and low-lying areas. This can cause water intrusion, mold growth, and costly repairs. Some newer models include battery backups, but even those rely on a charged battery and may be affected by prolonged outages or improper maintenance.

Backup options worth considering

To mitigate risk, homeowners can consider one or more backup solutions:

• Battery backup sump pumps: A separate 12V or 24V battery system kicks in when AC power fails. Check that the battery is regularly charged and replaced as recommended by the manufacturer.
• Standalone generators: A portable or standby generator can power the sump pump during an outage. Installations should follow safety guidelines to prevent backfeeding and carbon monoxide risks.
• Water-powered sump pumps: These use municipal water pressure to operate during power outages, though they may not be suitable for all homes and can waste water.
• Check valves and proper sump pit sealing: Even with backups, preventive measures reduce the volume of water that needs pumping and minimize seepage.

Maintenance and testing tips

Regular maintenance is essential to ensure backups function when needed. Test backup systems at least twice a year, inspect electrical connections, and keep batteries fully charged. Clean the sump pit and remove debris that could jam the pump. For battery backups, verify the charger and monitor battery health. In flood-prone areas, a professional assessment can tailor protections to your home’s design and climate.

Safety considerations

Never run a generator indoors or in a garage; exhaust fumes are dangerous. Place generators outdoors in a well-ventilated area and use proper extension cords rated for outdoor use. If you notice flooding and cannot mitigate it quickly, consider contacting local emergency services or your water mitigation contractor.

Bottom line: planning for power outages with a backup sump pump system can reduce flood risk during storms. Start with a realistic assessment of your home, then implement a backup strategy that fits your budget and local conditions.