For managing wet basements, there are several effective interior and exterior drainage systems designed to mitigate hydrostatic pressure and groundwater intrusion. The best approach often depends on whether you need to intercept water before it touches the foundation or manage it once it has entered the structure.

Key systems include:

1. Interior Perimeter Drain Systems: This is a proven method for managing groundwater that has already entered the basement footprint. It involves trenching the concrete floor along the interior wall and laying perforated pipes on a gravel bed. These pipes channel water to a sump pump system for automatic discharge away from the home.
2. Exterior French Drains: These are ideal for intercepting surface water and groundwater before it reaches the foundation. They consist of a gravel-filled trench with a perforated pipe wrapped in filter fabric to prevent clogging, which redirects water to a pop-up emitter or storm drain.
3. Basement Moisture Barrier Solutions: Often used in conjunction with interior drains, these specialized vapor barriers or membranes are applied to walls and floors to block water vapor and prevent mold, mildew, and humidity.
4. Sump Pump Systems: An essential active component of interior drainage, these pumps collect water from the perimeter drains and discharge it away from the foundation. Higher-end systems may include battery backups for continuous protection during power outages.
5. Egress Window Drainage: Specifically designed for window wells, these systems collect water that would otherwise pool against the foundation and channel it into the main perimeter drain network.