With all the rain we've had recently, it's difficult to convince people that water really is in short supply for some of us. However, what we need to consider is where does it all go, and why, if it's so wet, is it scarce?

To answer those questions very briefly:

1. Population is increasing, as is water usage through industry uses, and we are not building more reservoirs to cope>

2. Once the reservoirs are full, the water goes elsewhere, some of it into the sea, and so becomes useless for drinking water.

The easiest thing, of course, is to build more reservoirs. But, who wants a reservoir on their doorstep?

Catch 22?

So, why not build your own reservoir, suitable for most of your own non-potable use? That's where a rainwater harvesting system can help.

Monetary savings aside, think of the other benefits. When I see the news reporting yet another area of flooding. I often think what if every house in a flood risk area, had rainwater harvesting; would we have had the same problems?

I've tried to find any data that would answer that question, but with no luck. But, being a simple man, I believe that it would have made a difference. Surely, the cost of installing this technology would be much less than the cost to repair all the damage done due to flooding?

I would be interested if any readers have seen any data, or indeed have their own views?

Photo by laffy4K

About the author: Barry Nutley is co-founder and director of Viridis Energie Consultants

If you have a question about anything in the above blog, please ask it in the comments section below.