Considerations depend on the type of property you have, how you plan to use the water and the type of tanks you use.
Considerations for underground rainwater harvesting
To supply water for use in your home, an underground tank is usually needed to store enough water to meet your household’s needs. Before installation, there are a few important factors to think about:
Can a digger reach the spot where the tank will go?
Are there any pipes, cables, or other utilities where the tank will be installed?
Will excavation be limited to soil, or will hard surfaces like concrete need to be removed?
Will cranes, concrete and muckaway vehicles be able to reach the area where the tank will be installed?
Do you need to drive or park over the tank later, like on a driveway?
Considerations for above-ground tanks/water butts
Typically water butts and wall tanks are more suitable for supplying water for gardens and not in the home, though if space permits, a larger above-ground tank can be used. Some key considerations include:
Is there a spot near your downpipes that looks good and works visually? Downpipes can sometimes be moved, but it requires careful planning to maintain proper water flow and prevent leaks and water damage.
If placing the tank in the rear garden, are there any pathways or tight spaces to consider? For example, if a pathway is only 1 m wide, the tank should be no wider than 1 m
Will you require a pump? i.e. if you are planning to supply irrigation systems, sprinklers or hoses.