Strange.
If I have no rainwater draining off site I can get a modest reduction in my drainage/sewerage charges, apparently.
But if I have some of it going into a water butt (or rainwater harvesting) that does not apply? See attached or the quote below.
Why?
https://www.unitedutilities.com/globalassets/documents/pdf/surface-water-drainage---household-2018-web-acc.pdf
Is it one of these "spend money on max benefit" things (like targeting insulation grants at the worst offenders), where anybody doing something already will mean a smaller reduction in the load because it is already being diverted in some way? But surely hat would also apply to full use of soakaways...
(Presumably one disconnects the butts before applying)
Ferdinand
surface-water-drainage---household-2018-web-acc.pdf