A hosepipe ban is set to be introduced next month as the prolonged dry spell is forecast to continue.
Water company United Utilities said the ban would come into force on 5 August for its seven million customers after what is believed to be the longest heatwave since 1976.
Fine and dry weather is expected across the country with a few showers in isolated areas.
Heavy showers swept across the region on Monday - with 14mm of rainfall recorded in Blackpool - and more is expected on Tuesday, according to the Met Office.
"There will be a few showers around the country, primarily focused in the north and northeast. Overnight the will die away but are likely to pepper Western coasts," Sarah Kent, a Meteorologist at the Met Office told The Independent.
However, the isolated downpours were expected to ease during the afternoon, with a return to sunshine for the rest of the week.
Temperatures in London will reach 27 degrees by tomorrow and by the start of next week it could hit the low 30s in the south of the country.
Domestic customers who get their water supply from United Utilities, with the exception of customers in Carlisle and the north Eden Valley, will face a temporary ban on their hosepipes due to supply levels.
Martin Padley, United Utilities water services director, said: "Despite some recent rainfall, reservoir levels are still lower than we would expect at this time of year and, with forecasters predicting a return to hot dry weather for the rest of July, we are now at a point where we will need to impose some temporary restrictions on customers.
"It is not a decision we have taken lightly and we are enormously grateful to customers for having helped reduce the demand on our network over the last couple of weeks, but unless we get a period of sustained rainfall before 5 August these restrictions will help us safeguard essential water supplies for longer."
The operation of the industry, privatised by Margaret Thatcher in 1989, is coming under increasing scrutiny, with Labour vowing to re-nationalise water if elected.
Steve Mogford, the chief executive of United Utilities, was paid £2.3 million last year, a 49 per cent increase since 2013.
Bosses of England's nine privatised water companies banked £58 million in pay and benefits over the last five years, according to research by the GMB union published in June.
Household water bills rose by 40 per cent above inflation between 1989, when the industry was privatised, and 2015, according to a National Audit Office report published the same year.
Ofwat, the water industry regulator, has said privatised water firms in England typically lose between 20 per cent and 22 per cent of supply due to leakage.
Cat Hobbs, director of We Own It, an organisation which campaigns for public ownership of utilities, said: "United Utilities is allowing an irresponsible level of leakage - 20-25 per cent.
"A hosepipe ban might be avoided if that water wasn't being wasted. We need to bring water into public ownership now so investment can go straight into infrastructure instead of lining shareholder pockets.
"In Paris, water is now in public ownership and leakage levels have been cut to 10 per cent."
Professor David Hall, a global expert on the water industry at the University of Greenwich, said privatised water firms have an incentive not to fix too many leaks as it begins to bite into profits and become uneconomic for them.
He said: "They are making big profits, virtually all of it taken out of the industry in dividends, not reinvesting anything and racking up debt.
"They can't recoup the cost of making reductions in leakage levels except by reducing profits, that's not what they want to do."
Agencies contributed to this report
Register for free to continue reading
Registration is a free and easy way to support our truly independent journalism
By registering, you will also enjoy limited access to Premium articles, exclusive newsletters, commenting, and virtual events with our leading journalists
Already have an account? sign in
Join our new commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies