| Submersible Sump Pump | Foundation groundwater seepage and hydrostatic basement slab pressure | Low (pit installation in corner of basement floor; 1-day installation) | Must discharge outside to grade or storm sewer; never into sanitary sewer under Wheeling village code. |
| Battery Backup Sump Pump | Storm flooding during electrical outages and primary pump mechanical failure | Low (mounts inside or adjacent to primary pit; zero floor excavation) | Requires annual AGM battery testing or charger replacement every 3 to 5 years. |
| Sewage Ejector Pump | Basement bathroom and laundry waste failing to reach elevated municipal sewer | Low to Moderate (requires sealed gas-tight basin and 2-inch vent stack penetration) | Check valve must be full-port rubber flapper; basin lid must maintain gas-tight seal under IDPH code. |
| Automatic Backwater Valve | City sanitary sewer main surcharge pushing raw sewage back through basement floor drains | Moderate (saw-cutting basement concrete floor or exterior cleanout excavation; 1 to 2 days) | Flap must remain accessible for annual cleanout and debris inspection; approved by MWRD. |
| Overhead Sewer Conversion | Complete basement flooding from municipal sewer surcharges up to street ground level | High (rerouting all basement plumbing drains overhead; ejector basin installation; 3 to 5 days) | The gold standard in Cook County flood defense; eliminates gravity basement connections to street sewers. |
| Floor Drain Standpipe / Plug | Minor low-pressure floor drain overflow during localized street storm surges | None (screws into floor drain threads manually as a temporary emergency measure) | Does not protect laundry tubs, toilets or showers; hydrostatic pressure can force water around plug. |