Technical Advisory

Pumps become inefficient for one of two reasons:

  1. They are physically worn.
  2. The pump is not matched to the current required operating conditions. An example of this would be where a water table has dropped substantially over time, increasing the total lift above the original engineering specifications.

Periodic pump efficiency tests can alert you when a pump is becoming, or already is, inefficient. It provides vital information that can help you decide when to retrofit or repair an inefficient pump. In conjunction with the original pump performance curve and specifications, it can also indicate which of the two reasons are to blame.

The Technical Advisory for Pump Efficiency Tests from the Advanced Pumping Efficiency Program describes the process beginning with obtaining a pump efficiency test through interpreting the pump efficiency report.