Rainwater Harvesting System

In the channel between the main structure and the greenhouse will be a 60-foot long stainless steel gutter, the keystone of the water reclamation system. That gutter captures all the water from rainfall on the roof, and diverts it into two “small” 2,015-gallon galvanized steel catch cisterns, which supply the main cistern. 

The “main” cistern is 12 feet in diameter, with a capacity of 27,000 gallons; it features a float switch and float valve to control the level of water in the main cistern, and draw more from catch cisterns as is necessary. It feeds water through the Pump Room’s three-filter pathway to supply the non-potable system. 

• Total rain water harvest capacity: 31,030 gallons

• Forecasted monthly harvest: >7500 gallons