Rain Harvesting systems require rainwater from the roof to be directed to the water storage vessel through gutters and pipes. These pipework systems will be different at every location, however are classified as either:
1. "dry" systems, or
2. "wet" systems.

"Wet" systems are also referred to as "charged" systems and can be converted to "dry" systems using an In-Ground Water Diverter which improves water quality and saves water.

Both systems have strengths and weaknesses, and with a little planning, you can optimise your water quality and install a system that looks good.