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A rain barrel is one of the cheapest, easiest ways to save money in your yard and garden — here's whyRainwater collection using rain barrels is relatively cheap and efficient: If your roof has gutters, you should be able to harvest over 500 gallons for every 1,000 square feet of roof with just 1 ...
The roofs of residential and commercial zones ... First, a policy requiring that all buildings be fixed with rainwater collection systems is necessary. Second, the public needs to be sensitized ...
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