Best Rainwater Collection Systems (2026): Barrels, Cisterns, Diverters, and Pumps
Quick Answer If you want the short list: Best rain barrel overall: A 50-65 gallon food-grade barrel with a removable basket filter and spigot (look for sealed, light-blocking construction) Best budget option: A basic 40-55 gallon rain barrel under $80 Best mid-size capacity: 275-gal IBC tote (DIY favorite) Best for serious storage: Above-ground cisterns (1,000+ gal) or underground for year-round supply Must-have accessory: A first-flush diverter — costs $20-$60 and is the single biggest upgrade to water quality Before buying, work out roof area × rainfall to size your storage (our rainwater harvesting guide covers the math). Right-sizing prevents buying too little (you run dry) or too much (wasted money). ...