Illustration of an integrated rain harvesting system.
These systems combine most of the major components, including the storage tank, into a factory assembled one-piece unit. This significantly reduces time and cost of installation.
Some integrated systems, with the pump and controls mounted on the storage tank, are designed for installation in a cellar or garage. Others are designed for underground use and some have the primary rainwater filter fitted inside storage tank. External controls and mains water top up are still required.