If you're feeling fooled on April 1, it's probably not funny. That's because it's the day when many everyday items go up in price.
One of those is water, with bills in Wales and England rising by an average of £31 a year. It means the average household will be paying £448 a year thanks to the 7.5% rise - the biggest in 20 years.
While the figures are averages, some households could find themselves facing even bigger increases. It depends on where you live and who your supplier is.