An existing 1974 pool was repurposed into a rainwater storage cistern. Additional storage capacity was achieved by directing the cistern’s overflow down to an above-ground tank.
This 25,000-gallon hybrid storage system captures rain from the residence upper level metal roofs. The water is conveyed down to a vortex prefilter before entering the cistern.
The rainwater is used to provide irrigation water for sustaining the living roof during the seasonal drought cycle in California. The living roof utilizes 1/3 of this rainwater annually for irrigation and the remaining stored water is distributed to the various areas of the ground-based landscape.