Collection and discharge can be separate components.
A drain may collect water along a foundation assembly and lead it to a sump pit. The pump then moves that water toward a receiving location. The components have different jobs even when both belong in one project.
DOE describes footing drainage discharged by gravity or routed to a sump. The appropriate arrangement follows the site elevations, water source and suitable outlet.
What the complete arrangement must address.
- Water collection at the intended area.
- A route from the drain to the collection pit.
- Pump operation and appropriate electrical installation.
- A discharge route with suitable capacity and permission.
- Access for inspection and maintenance.
Keep the maintenance responsibilities clear.
Follow the actual pump and system documentation. An unobstructed float, accessible components and a known receiving location are important to discuss. A pump that operates does not prove a collection drain or outlet is unrestricted.
Ask what happens during power loss or reduced receiving capacity. Those questions should be addressed for the actual system rather than through a generic promise that every sump protects every basement.
Read the comparison before choosing components.
For the differences between gravity drainage, collection and pumping, see French drains versus sump pumps. A property assessment should explain which functions are needed, not simply recommend a component by name.