Build a Rainwater Harvesting System

This article from Environmental Building News shares how to build a rainwater harvesting system to gather rain for watering, washing and drinking water.

| August/September 2003

  • Learn how to build a rainwater harvesting system. Rainwater systems can be as simple as routing gutters to an old oak barrel, like Phoebe Jenkins and her family of Barkeyville, Pennsylvania, use.
    Learn how to build a rainwater harvesting system. Rainwater systems can be as simple as routing gutters to an old oak barrel, like Phoebe Jenkins and her family of Barkeyville, Pennsylvania, use.
    PHOTO: JOSEPH JENKINS
  • Small whole-house rainwater systems use larger tanks to store water.
    Small whole-house rainwater systems use larger tanks to store water.
    RICHARD HEINICHEN
  • Diagram: Roof washer with filter system; Standup-type roof washer.
    Diagram: Roof washer with filter system; Standup-type roof washer.
    TEXAS WATER DEVELOPMENT BOARD
  • Diagram: Rainwater harvesting system main components.
    Diagram: Rainwater harvesting system main components.
    TEXAS WATER DEVELOPMENT BOARD

  • Learn how to build a rainwater harvesting system. Rainwater systems can be as simple as routing gutters to an old oak barrel, like Phoebe Jenkins and her family of Barkeyville, Pennsylvania, use.
  • Small whole-house rainwater systems use larger tanks to store water.
  • Diagram: Roof washer with filter system; Standup-type roof washer.
  • Diagram: Rainwater harvesting system main components.

Learn how to build a rainwater harvesting system to save free water.

Rainwater harvesting systems can be as simple as directing gutters to a lidded garbage can or as complex as a concrete cistern, roof washer and filtration system. But whatever your application, rest assured that you'll be getting some of the purest — and cheapest — water around.

Why Save Rainwater?

Rainwater can be used for potable water (drinking, cooking, bathing) or nonpotable uses such as landscape irrigation, livestock watering and washing. Collecting and using rainwater has numerous benefits, ranging from improved water quality to reduced stress on underground aquifers.

"All water is rainwater," rainwater systems enthusiast and author Richard Heinichen is fond of saying. And indeed, he's right: All our water, whether sucked from an aquifer, river or well, or harvested from a rooftop, once was cloud-borne.



But after it falls from the sky, rainwater percolates through the earth and rocks, where it picks up minerals and salts. As Heinichen points out, in many cases, this water also collects other contaminants such as industrial chemicals, pesticides and fecal coliform bacteria found in the soil. Captured before it hits the ground, rainwater is free of many pollutants that plague surface and underground water supplies and, according to the Texas Water Development Board, "almost always exceeds [the quality] of ground or surface water."

Rainwater typically has very low hardness levels, which reduces the use of soaps and detergents, and eliminates the need for a water softener. Fewer minerals also saves wear and tear on your plumbing fixtures.

Becci
10/18/2019 5:11:10 AM

Saving water is a best work in the world for mankind, for our future and for our children. I read so many blogs on water conservation and using an irrigation system in the blog EAGROVISION.COM, they also give me good suggestions about water-saving by using an irrigation system.


Nadia
9/30/2019 6:49:56 AM

I live in a house which build with bricks and cements and I have a no slope roof. can any one tell how can I construct a water storage tank which is filled with rain water. After that I can use that water for my home garden in summer days. I read one article about securing your plants from insects by using pure rain water - https://bit.ly/2oBIkRp . They told me how can i protect my plants from insects can anyone help me to construct.


Knub
4/20/2019 4:36:17 PM

Could you use maybe a sand pre-filter and a second filter of activated charcoal? I'm not sure the specifics. I'm not an expert, just very interested.







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