PRIVATE WATER SYSTEMS - Pumping Installation -Household Uses

Household Uses

Shower Only 1.0 (4.0)
Lavatory 0.5 (2.0)
Toilet - flush tank 0.75 (3.0)
Sink, kitchen 1.0 (4.0)
Dishwasher 0.5 (2.0)
Laundry sink 1.5 (6.0)
Clothes washer 2.0 (8.0)
2 lavatories (0.5 gpm each) 1.0
Toilet 0.75
Kitchen Sink 1.0
Dishwasher 0.5
Clothes washer 2.0

  • List all of the uses and the Peak Demand Allowance (PDA) for each. Make a note of which has the highest PDA and its FFR;
  • Recheck the listing for any duplicate uses or other uses that may have been overlooked.
  • Total the demand allowances for all household uses;
    - Based on the example, the total is 7.25 gpm. If the pump supplies more than one house, use the same procedure and divide the total by 2. With each additional house, the variation in time when water is used spreads the demand on the pump.

    Back ArrowReturn to Determining Required Pump Capacity © Copyright