Easy to check as your provider is supposed to split your bill accordingly
a,Drinking water (potable) supplied in cubic metres, based on meter reading or rateable value
b,Sewerage disposal which should be the same volume as above
c,Surface water charge, based on a nominal area in M2
Like all stats providers mistakes are made, their 'puter systems have glitches & add in human numpty error, so it's well worth checking
Oh, and unless you've ten sprogs, look at having a meter on your water supply, as it also cuts your sewerage charge which most people don't realise
