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Rooftop Rainwater Collection

Collecting of rainwater during the rainy season is important in providing water for agricultural use, domestic and household uses and also for commercial and industrial uses. The mainly practiced rainwater harvesting is the rooftop water collection for various uses where water is collected in tanks. Enhancement of self-sufficiency as well as provision for water in the future when the common source of water is unavailable is done by harvesting rainwater. Economic enhancement, as well as environmental conservation, is greatly enhance by rainwater harvesting. Gutters are important in rainwater harvesting as they collect the rainwater and direct it to a collection point.

Various types of materials are used in the making of rainwater tanks where the rainwater collected is usually stored. Plastic, concrete, fiberglass, aluminium metal, and stainless steel which should be resistant to rust and other chemical reaction are some of the main materials used in the making of rainwater tanks. Factors affecting the choice of a rainwater tank includes affordabilitily as well as the durability. Concrete rainwater tanks are usually more durable than the other tanks although rainwater tanks more preferred are those made of plastic materials. The rainwater tanks can be placed on the ground surface to collect the rainwater, or they can be placed underground. Removing water from underground rainwater tanks is only through pumping it to an aboveground tank so as to use it since valves or taps cannot be fitted.

Rainwater tanks should be covered at all times leaving just a small hole where the pipe discharging water can pass through so as to avoid unwanted materials from dropping into the water. Plastic rainwater tanks are used in many places since they come in different sizes, and volume and also one can find them almost everywhere. Algae growth is common when plastic tanks are placed on the ground hence should be placed on a surface that keeps away algae such as concrete. Plastics rainwater tanks have reduced durability when exposed to solar radiation hence should be placed where there is no direct solar. Other materials using in making rainwater tanks have their shortcoming mostly in releasing contaminants to the harvested water hence safety precaution measures should be put in place to minimize contamination.

Harvested rainwater usually have a lot of contaminants hence should be sterilized for human consumption. Loads of contaminants usually find their way into harvested rainwater since most of them are usually on the rooftops after being deposited there. Some techniques for removing contaminants from the rainwater to make it safe for drinking is by chlorination as well as filtration. The most used method in sterilizing water is chlorination since it is quite effective and also affordable. It is also advisable to ensure that when collecting rainwater, the first time it rains water should not be collected into the rainwater tanks since they have high loads of contaminants.

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