A sump pump discharges two feet from the foundation wall. Why is this reported?

A sump pump exists to remove water that has reached the foundation drainage system, and where it puts that water determines whether the job is finished. Discharging two feet from the wall places the water directly over the backfill zone — the disturbed, more permeable soil that was replaced against the foundation after construction. That soil is the fastest path back down to the footing drain, so the water re-enters the system, returns to the pit, and is pumped out again. The pump short-cycles, which wastes energy and shortens its life, but the more serious consequence is that the foundation is kept continuously wet by water the system was supposed to remove. The remedy is extending the discharge well away from the building, or tying it into a drain that carries it off site.

Water discharged two feet from the wall soaks into the backfill and drains straight back to the footing drain and the sump, so the pump cycles on the same water repeatedly. The foundation stays wet and the pump runs far more than it should.

Sump systems collect water from footing drains and discharge it away from the structure. Discharge terminating close to the foundation drains back through disturbed backfill into the same drainage system, producing recirculation, continuous pump operation and sustained foundation wetting.

Pumping in a Circle. Two feet out is still inside the backfill — the water takes the elevator straight back down to the pit.

Check where the grade takes the water after discharge as well as the pipe length. A long discharge onto ground that slopes back toward the house recirculates just as effectively.

• •Reporting frequent pump operation without explaining the recirculation causing it
• •Treating freezing as the primary concern in every climate
• •Extending the line but discharging onto ground that slopes back