ObservationBased on the latest pump flow test, the results show a 5% underperformance at rated flow (750 gpm) and the pump is unable to deliver 150% of rated flow (1125 gpm). There could be several causes for the underperformance, for example, obstructed pipes (suction or delivery side), faulty foot valve, worn out or broken pump vanes, etc.RecommendationThe pump performance should be restored to nominal rating as soon as possible with the help of your fire contractor and/or vendor. This is essential as the water supply is the only means of fighting a large fire.