• Have your private storm and sanitary sewer laterals inspected by a plumber to ensure they are watertight.
• Have a plumber inspect your sump pump capacity.
• Inspect and make sure you have a backflow preventer on your sump pump system.
• Increase the capacity of your sump pump system.
• Install a back-up sump pump.
• Make sure your sump pump system is not pumping water to the outside of your foundation.
• Install downspout drains out to the storm sewer system to keep water from collecting around your foundation.
• Ensure your downspouts are not connected to your foundation tile.
• Install clay or cement “collars” on your storm and sanitary laterals.
• Inspect your basement walls. If water is coming through, groundwater pressure may require installation of an exterior waterproofing system.

More information on basements:

https://www.houselogic.com/by-room/basement-attic/fix-wet-basement/

https://www.waterheaterleakinginfo.com/water-in-basement/