How we calculate water usage

The Rachio app estimates your water use. We calculate the gallons used on a zone by zone basis using the zone attributes you provide. 

Data used:

  • Nozzle: Precipitation rate of the nozzle: PR 
  • Area: Square footage of zone: SF (note: defaults to 500 sq ft unless overridden) 
  • Watering Time: Duration that the zone runs for: D 

The total number of gallons used per minute per zone is calculated using this formula: 

( (SF x PR) / 96.25 )

We then multiply this figure by the duration (D) to calculate the total number of gallons used for that particular zone during a schedule. All individual zone durations are batched and recorded as an aggregate total.

How can I fix reporting errors?

  • If you believe the reported water usage is wrong, we recommend measuring your zone's area and updating the app ( Zone > Advanced Settings > Area ).
    Here's a great online tool that will let you measure your zone areas via Google maps.
  • Conduct a catch cup test to find the true precipitation rate for each zone.
  • We can remove all watering events for the controller and effectively reset your reports back to zero by request at support@rachio.com. Be aware that we can only clear usages prior to the current days history.

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