Rainwater harvesting is good for the environment, good for your wallet and easy to boot. Mankind has been storing and conserving water for centuries. Today there are several types of inexpensive rainwater tanks that allow you to conserve fresh water for drought conditions or other emergencies. Does this Spark an idea?
Uses
Rainwater tanks are used to collect rain, primarily to reduce environmental impact and promote self-sufficiency. Although rainwater cannot be used for drinking without treatment, it can be used to water the garden or food crops or to wash clothes or cars. Combined with a filtration system, the rainwater can be used for drinking and cooking.
History
Rainwater tanks are as old as civilization. Water has always been a precious natural resource and early humans had primitive systems of storing and conserving water. The Rainwater Harvesting Guide (see Resources) has significant information on the history of rainwater tanks and rainwater harvesting from the civilizations of ancient Egypt and the Roman Empire to modern times.
Types
Polyethylene tanks are an inexpensive and popular type of rainwater harvesting tank. They are relatively lightweight and easier to maneuver than metal or wooden tanks, and they block UV rays. Polyethylene tanks can be sunk below ground level to keep a clutter-free yard or used above ground.
Fiberglass is another popular material for rainwater tanks. Fiberglass tanks are rust-resistant and also relatively lightweight; however, they are more expensive than polyethylene or even metal tanks. Fiberglass tanks make sense in areas that have great fluctuation in temperature.
Metal tanks can be made of copper or stainless or painted steel. Metal tanks are the heaviest option, but they can lend a nice patina to a yard and they, like the fiberglass tanks, are rust-resistant.
Choosing a Place
To ensure maximum impact, rainwater tanks must be placed near a rain source, most commonly the eaves of a rooftop or connected to a downspout. Rainwater will fall naturally or via the aid of a rain chain into the rainwater tank. Other places to set your rainwater tank include adjacent to a patio, driveway or other building. All you need is a steady source of rain.
Harvesting
In order to have potable rainwater you need to have adequate filtration. You can use a simple bucket system to fetch water for washing or watering plants. You can purchase closed-top rainwater barrels with attached spigots on the side, making harvesting as easy as turning a knob.
Tags: rainwater tanks, conserving water, Fiberglass tanks, Polyethylene tanks, rainwater tank, relatively lightweight, storing conserving