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Rainwater Harvesting Component Articles

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This site has hundreds of articles on rainwater harvesting. But where to start? This is the right page for those that want to design and install a system on your own.

There are hundreds of parts in a typical-sized rainwater harvesting system and with time and research most aspects of a rain water harvesting system can be figured out. The tools on this page will help you get started. >> more

Bladders - Another Storage Option

The tank is the most expensive component of a rainwater harvesting system. This is true whether the tank is above ground or below ground. Consequently, many people opt to undersize the tank in order to save money. Fortunately, there are alternatives to solid-walled tanks that can reduce the cost of a system.

Conveyance - Simple or Complex

Conveyance, in a rainwater harvesting system (RWH), carries the rain from the roof (i.e. the capture system) to the storage tank (i.e. the holding system). Sounds simple, but it can range from being almost nonexistent to extremely sophisticated and attractive. This article will deal with the simpler solutions.

Floating Filter Intakes

Why worry about where the water in the tank is pulled from? Isn't it all the same? The simple answer is NO. No matter how good your first flush system, if you have one at all, some particulates are going to enter the tank. Eventually, this material will settle on the bottom of the tank. So taking water off the bottom picks up these particulates. Some may be caught by an outgoing filter but this water may also contain heavy metals or chemicals which, at worst, may not always be filtered out and at best, will clog the intake filter faster.

Comparing Storage Options

Storage tanks, usually the most expensive component of the rainwater harvesting system, come in a wide variety of sizes and types. When deciding on the type of tank to use, the main factors to consider include where you live and your budget. When choosing the size of storage tank or cistern, consider several variables: rainwater supply (local precipitation), demand, projected length of dry spells without rain, catchment surface area, aesthetics, personal preference, and of course, your budget.

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