How Much Does a Rainwater Harvesting System Cost?
A Rainwater Harvesting System’s cost varies depending on a number of factors including but not limited to:
- Topography of land where tank will sit
- Soil/rock type for trenching
- Size and type of pad for tank (concrete vs gravel)
- Length of runs for pipe between tank and house
If you are interested in a potable (safe to drink) system that will supply your entire home, you will likely need a minimum of 20,000 gallons, but the most common size is 30,000 gallons. These systems will require a pump and a filtration system as well as underground trunk lines and pressurized lines feeding back into the home.
If you are only interested in collecting rainwater for irrigation purposes, you can use a much smaller system. These systems do no require a pump or filtration, and can be situated directly underneath the gutter downspouts. This will eliminate potentially costly trenching.