Ultimate Guide to Basement Sump Pump Installation & Backup Systems

## Hydrostatic Pressure and Sump Pit Dynamics Groundwater rising around foundation footings exerts immense hydrostatic pressure on basement floors and walls. Sump systems collect this water via perimeter french drains and pump it away before basement ingress. ## Dual-Pump System Architecture - **Primary Submersible Pump:** 1/2 HP cast-iron housing pump with vertical float switch capable of moving 3,000+ GPH at 10-foot head height. - **DC Battery Backup Unit:** Activates automatically during power outages, utilizing deep-cycle AGM marine batteries to maintain pumping operations for up to 72 continuous hours.