10/26/2026
This recently installed 10,000 gallon rainwater system (4x 2,500 gal. cisterns) in Claremont, CA is about 20% full after just 1” of rainfall. Harvested rainwater can be stored in UV resistant tanks for extended periods, requiring only basic filtration to supply standard drip irrigation. Rainwater harvesting is a powerful tool for long term water security, localizing water supplies rather than relying on dwindling inputs from remote watersheds.