The only problem is that, (unless you go absolutely mad with the water), it doesn't save you any money. Well not if you are with Anglia Water it doesn't. I found this out the hard way about 7 years ago. To cut a long story short, after AW put in a meter at our last premises, I had a heart to heart talk with AW, and went on their "SoLow" tariff and reduced my water rates by over a third. The point is, (and they don't shout this), everyone has a basic limit, whether you are on a meter or not, now I forget what the "standard" tariff is, but it's a lot higher than 75 cu.m which is what we are on, (on the SoLow tariff). and unless you reach that limit that is what you pay. Ask your Water Provider what the minimum cu.m amount is, and if you can get a reduction if you don't use that much. I bet you cannot. This is why I have checked my meter reading every month for the last year to obtain an average use, so now I know how much I can put on the plot in times of drought, without going over my limit.