<human>:  How do I install a rainwater catchment system?
<bot>: The first step in installing a rainwater catchment system is to determine what type of system is needed. Depending on the size of the system, the design may vary. Generally, a rainwater catchment system includes a catchment structure, such as a rain barrel, connected to gutters and downspouts to direct water into the catchment. In addition, the system should include a filter to remove debris and sediment, a first flush diverter to divert the first flows of water during a rain and a low level outlet to control overflow. After selecting the best system for your needs, installation can generally be done with just a few hand tools, such as a drill and saw, and some basic hardware.