Even at 3 cubic metres of water a day, that really isn't very much water at all, someone watering there lawn with a sprinkler will use that much up in an hour or two.
In the summer of 2006 there was a leak in a street I work in, at one point the water board opened (for what reason I have no idea) a main valve and water was gushing like a river down the road.
It was left running for 10 minutes or more and it will have pumped out more water in that time than I'd use in a week!
I'm 100% WFP (well, ok, 98%, Can't use WFP inside after all!) and I can make 650 litres of pure last up to 3 days, my 100 litre IBC will last me close to a week, and that's even with supplying Squeaky with his water too.
So in a busy week my total water consumption (waste + pure) is under 5 cubic metres...it really isn't much.
currently there are about half a dozen WFP users in Chepstow, and as my figure also includes Squeaky's usage, the Chepstow WFP'ers probably don't use more than 20 cubic metres between them.
Compare that to a factory and they'll be using that in an hour, compare it to a brewery or a soft drink manufacturer and it pales into utter insignificance, they go through millions of litres a day.
I'm not sure how much the average household uses in a single day, but add up the 7 or 8 thousand households, and that 20 cubic metres for the towns window cleaners once more will pale into insignificance!
However.....
There has now been quite a few posts and threads concerning the harvesting of rainwater, initially i thought, "What a load of old tosh! (not the slitty eyed one just down the road from me!
)"
But it now really does seem to be a very good idea indeed, and in particular if you are on a meter.
I am extremely lucky in that where I live I could stack 1000 litre IBC tanks 2 up, 3 deep and about 10 side by side if I wanted!
Jeff Brimble has made some great posts on the subject with regards filtration and so on, at some point I may well consider it, I think it is a great idea.
Ian