Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Rooftop remedy


If the government insists on the need for a million or so new houses in the South East of England, have we considered harvesting the rainfall that falls on these roofs?

Let's persuade the politicians to make it a planning requirement that every new building is provided with its own rainwater storage tank and simple filters buried under the lawn. With a small pump and a header tank in the attic, this water could be used for toilets, car washing and gardens.

A odest 0m 2 roof with just 700mm annual rainfall yields over 40m 3 a year. Multiply that by 1M and do the same thing for commercial and industrial buildings and you have a lot of water. It would cost at the beginning but the owners would save on their water bills and it would be a lot less power hungry than desalination.

Jim Patterson (M), 122 Desswood Place, Aberdeen, AB15 4DQ

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.