They make millions of pounds in profits every year. But that's not stopped water firms putting up prices above the rate of inflation. The increases from April will come just months after energy bills soared to a record high - putting increasing pressue on household budgets.
Thames Water sees the biggest rise, with a combined water and sewerage bill going up by 5.5% to an average of £354. Meanwhile, Southern Water bills are up 5.3% to £449. And customers who use Wessex Water in parts of Dorset and Wiltshire will see a 4.9% per cent rise, up to £478.
Chris Maughan has been meeting people in Reading who lost their water yesterday to see what they think.
More top news
Mostly dry with sunny spells throughout the day. Some isolated thundery showers are possible in Kent this morning and feeling fresher
Sunny this evening, then dry overnight. There is the risk of thundery showers for Kent tomorrow morning, then sunny spells by the afternoon
Sunshine to end the day then dry tonight. Tomorrow will be mostly dry and feeling fresher with the risk of a heavy shower in the afternoon