General considerations
Before installing a rainwater tank, some of the factors to consider include:
- rainfall for the region – seasonal patterns and potential annual yield
- roof catchment size (area of roof discharging to tank)
- roof characteristics (roof material, structures above the roof that may rust or corrode)
- water demand (intended use, in-house and garden)
- tank capacity and available space for tank
- if plumbed into buildings – best location of tank(s) to connect to pipes
- reliability of source for indoor use and required back-up supply
- cost (installation in new developments may be more cost-effective than retrofitting) and regular maintenance
- approval – most local councils require approval of a building application before installation; check with your local council
- a licensed plumber is required to install the tank, fixtures, pipes and pumps.