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Rainwater Cistern

Rainwater Cisterns – Basins, Barrels and Tanks

The rainwater cistern is historically an underground basin of water, but it can also be an above ground barrel or tank. Much like an artificial well, cisterns are used to make sure that water is not contaminated nor suffers from evaporation. Probably the most effective but overlooked form of rainwater storage in the modern era rainwater cisterns are practical and can be aesthetically concealed below ground, behind fencing or trellis. Good materials for cisterns include plastic liners or membrane material in wood frames, ceramic, fiberglass, “food grade” plastic and poly-tanks, as well as other potable liquid materials.

The two main reasons why people use cisterns are either for the sake of survival in a place where the only potable water is rainwater, or ecological awareness in search of sustainability. Either people need a cistern, or want one because they are concerned about how they (or others) are consuming water. A rainwater basin needs to offer enough capacity to collect enough useable water from a catchment surface. Rain barrels are exceptional tools for not only excess cistern water, but if connected together can catch enough rainwater to filter for using for cabins and other weekend getaways.

The rainwater cistern can hold large amounts of water and is completely sealed from contaminants, except those in the water itself acheter du viagra en france. Where evaporation and external contamination can be issues with basins, the most practical thing about a cistern in all this is both size and location. Historically cisterns are put underground because it is one of the safest places to put something that is to be kept under constant temperature. Nowadays, we have giant rainwater cisterns that can be bought from manufacturers and become a wonderful element to add to your backyard, or barn, there is no reason not to be proud your rainwater harvesting tank.

Accumulated water is wealth in some places, and among the people of the sand in Africa, water is synonym for the word God, so important is this natural resource. Eskimos have more than 30 different words for snow, so important is it in their way of life.

In the average American family of four, anywhere from 900 to 1200 liters of water are consumed daily. So much water, what if it doesn’t rain for six months? Well, calculate the amount of cubic liters needed to safely use a cistern year round according to catchment size, rainfall, and daily consumption. The longest dry season, will determine the longest length of time without water, and that multiplied by days and liters would give the total size of any given rainwater cistern.




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Posted in Harvesting by Administrator on October 3, 2005.

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