3 years ago we were in a 3 bed house (2 toilets, 1 bathroom) and it was rateable. We were paying £18 a month, but only paid it for 8 months out of the year with 4 months off, so £144 a year.
Now we're in a modern 3 bed house with the same number of toilets and bathrooms, 5 mins walk from the old house, but it's metered. We pay £35 a month for 12 months! So £350 a year. More than double what we used to pay. Bloody outragious!!!
I keep a constant check on the bills and if we ever get an estimated bill, I'm straight on the phone with the real reading. Currently we're about £30 in credit with the water company.