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5 Easy Steps to Calculate Water Savings

Example of Estimated Water Savings Using Rain Bird 1800-PRS Spray Heads

EXAMPLE

Calculate your estimated savings:      
Step 1: Enter the pressure at the nozzle:   psi (Example: 60)
Step 2: Enter the GPM @ 30 psi:   GPM (Example: 14.82)
Step 3: Enter the average watering time per day:   minutes/day (Example: 10)
Step 4: Enter the average number of watering days per week:   days/week (Example: 4)
Step 5: Enter the average number of watering weeks per year:   weeks/year (Example: 40)

Your estimated savings:      
  Initial system waste:   GPM
  Yearly water savings:   gallons*

*Due to varying conditions, your actual water savings may be different. This formula is designed solely as a basis for estimating potential savings.

Example is based on a system with four zones total, and each zone is similar to the zone illustrated below:

Back to calculator | See how the formula was derived