Nearly 10,000 of those will wake up on Christmas Day in bed and breakfasts, hotels or hostels where in many cases their family will have been put up in a single room, sharing bathrooms and kitchens with other residents.

Shirley Widdop, from Keighley, whose bill, based on a water meter, has risen by 35%, says: “It’s outrageous and like something from the 1930s.”
“We shouldn’t have to ration water.”

A report on poverty from the Joseph Rowntree Foundation shows that arrears for water bills are now the most common form of debt for the poorest families.

“I am on a water meter and because I’m on a low income I constantly worry about the bill being too high,” says the 51-year-old, who lives with two of her children.

In-work poverty is the highest it has been in 20 years and in a typical classroom of 30 children, nine are living in poverty, the Joseph Rowntree Foundation’s state of the nation report says.

Although successive governments have argued work is the fastest route out of poverty, the figures show 8 million people are living in poverty in households where at least one person is already in work.

The alarming figures come after the chancellor Philip Hammond revealed Brexit will make the UK worse off under any scenario.

The government estimates the UK economy could shrink by 3.9 per cent after 15 years under Theresa May’s Brexit plan, compared with staying in the EU.

But a no-deal Brexit could deliver a 9.3 per cent hit, the figures say.

Overall one in five of the UK population (22 per cent) are already in poverty – a total of 14.3 million people, and 56.5 per cent of those in poverty are living in household where someone is in work.

Campbell Robb, chief executive of the Joseph Rowntree Foundation, warned families could be “pushed over the brink”.

He said: “We are seeing a rising tide of child poverty as more parents are unable to make ends meet, despite working. This is unacceptable.

“It means more families are trapped in impossible situations: struggling to pay the bills, put food on the table and dealing with the terrible stresses and strains poverty places on family life.

“It’s time for us to decide what kind of country we want to be. As we leave the EU, we must tackle the burning injustice of poverty and make Britain a country that works for everyone.

“We can do this by taking action on housing, social security and work to loosen the constraints poverty places on people’s lives. No one wants to see more families being pushed over the brink.

“We have an opportunity to fix this and ensure everyone can reach a decent standard of living – it is one we must seize to make the country work for everyone after Brexit.”

In-work poverty has been rising even faster than employment, the report says, and has been exacerbated by many parents working in low paid service industry jobs with little chance of career progression “especially in hotels, bars, restaurants and shops”.

Any gains from the national living wage and tax cuts are often outweighed by changes to tax credits and benefits that top up low wages, while the cost of housing has risen.