Collecting rainwater can be an effective and eco-friendly way to lower your water bill. Whether you’re planning to use it in the garden or to flush toilets in the home, even a small amount of rain can add up quickly. A 1,000-square-foot room can easily provide 550 gallons of water with less than an inch of rain. Even a small roof, like a 10x10 garden shed, can net you 60 gallons.
