Domestic rainwater harvesting easy calculator Please fill out this form to assist us with calculating your rainwater savings potential If you are a human and are seeing this field, please leave it blank. Fields marked with an * are required First Name Last Name Project Address City Post Code Phone Email Project Name (or reference if applicable) Project Type New Build Retrofit Other Reason for requirement Roof/catchment area (sqm) - refer to How to measure your catchment area if unsure Roof drainage system type Hard roof Green roof Pitched roof Flat roof Other What will the rainwater be used for? Toilet Flushing Laundry Irrigation Other Maximum number of occupants Tank location Above ground Below ground Will the tank be in a pedestrian or trafficked area Pedestrian Trafficked Preferred system type Direct feed system Gravity system Distance from tank to building (vertical and horizontal) Distance from tank to further point of supply (vertical and horizontal) Additional information What is the capital of England? *
