Rainwater tank (sometimes called in North America, the rain barrel or water butt in the UK) is used to collect and store stormwater runoff, usually through a water tank from the roof rain gutters. Rainwater tanks and harvesting rainwater collection and maintenance of equipment. Installation of rainwater tanks for later use, rainwater utilization, reduce water mains water, economic or environmental reasons and assistance to self-sufficiency. The stored water can be used for garden irrigation, agriculture, flushing toilets, washing machines, car washing, and also drinking, especially when other water is unavailable, expensive or of poor quality, and to take proper care, water is not contaminated or water filter. Rainwater tanks in the ground also can be used to release rain water is retained at a later time. In arid climates, rain buckets are often used to store water during the drying during the rainy season. Rainwater tank may have a high (perceived) cost of the initial investment. However, many families use the small-scale rain barrels, in order to beautify / horticultural applications, rather than water as an alternative to trace the harvest of the drinking water. These small rain barrels, often from food storage and transport barrels, recycling, or in some cases, the aging of whiskey and wine barrels, often cheaper. There are many low-cost design, where clean drinking water and limited alternatives in a variety of applications in developing countries using locally available materials and village-level technology [1] Although the majority is the correct design of mosquito, the lack of appropriate filter or filter out the hotbed of closed-loop system may be caused by the larvae. Used for drinking water tanks, user-run health risks, if maintenance is not