High Quality Content by WIKIPEDIA articles! A rainwater tank (sometimes called rain barrels in North America or a water butt in the UK) is a water tank which is used to collect and store rain water runoff, typically from rooftops via rain gutters. Rainwater tanks are devices for collecting and maintaining harvested rain. Rainwater tanks are installed to make use of rain water for later use, reduce mains water use for economic or environmental reasons, and aid self-sufficiency. Stored water may be used for watering gardens, agriculture, flushing toilets, in washing machines, washing cars, and also for drinking, especially when other water supplies are unavailable, expensive, or of poor quality, and that adequate care is taken that the water is not contaminated or the water is adequately filtered.

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