By 2020, the UK has agreed to spend £1.2bn on sprinkler units to help control the growing number of droughts.
The government said the move was a response to the growing problem of drenching cities with water, but many residents will still be waiting until then to see the results.
The first phase of the sprinklers, called the EZ-Series, are expected to be deployed in 2020 and in the coming years, more will be installed.
“The government’s commitment to ensuring that the UK is prepared for and is ready to meet the threat of drought has been a priority,” a government spokesman said.
“This includes investing in a sprinkler network that can meet the growing demand for water, and improving the technology to ensure the systems are deployed as soon as possible.”
What are the water restrictions?
The restrictions are based on the number of people living in the area and the number that are dependent on the sprinkling system.
The UK has the highest number of water restrictions in the world, at 12 million.
It has the third highest number per head of population in the EU.
It has the second-highest per capita water use in the developed world, with an average of 7.9 litres per person per day.
The United States, which has about 13.5 million people, has the fourth highest per capita use of water, at 4.5 litres per capita per day, followed by the United Kingdom, which is fourth highest with 5.8 litres per head.
The sprinkler restrictions in England, Scotland, Wales and Northern Ireland were last updated in November 2016, while in Wales they were last published in September 2018.
How much does it cost to buy one of these units?
The cost of the Ez-Series sprinklers is around £2,000, while the UK’s average per head cost is around 2.5, according to the government.
However, the government said they could be more affordable, as the average cost of a sprinklers system in Britain is around 10% of the total cost of water.
What if there is a water emergency?
There are plans to add the sprinkles to water-saving devices and water filtration systems.
But water is already cheap in the United States and other countries.
In the UK, a new system that could cost as little as £400 will cost around £1,000.
A new water filter that could be installed in every home is also being considered.
The new system, dubbed the Smart Water Filter, would include an electronic circuit that can control the flow of water from the sprinklamp system.
This would automatically adjust the flow and remove the excess, while keeping water from getting into the sewer.
The Smart Water filter will also automatically adjust to changes in temperature.
What do other countries do?
Other countries have introduced water sprinkler schemes.
In India, the country with the highest rate of water restriction, more than 3 million people are currently dependent on sprinklers.
The country is also one of the world’s most water-intensive countries.
India’s average daily water use is around 7,000 litres, which makes it the fourth-highest in the OECD.
It also has the most people who depend on the system, with around 1.5 billion people.
Water restrictions have been widely condemned by campaigners, who have warned that the measures could lead to water scarcity in some parts of the country.
But the government has said it will continue to invest in sprinkler technology.
“These technologies can save water, make cities water-efficient and improve the health of millions of people,” the government statement said.
What else is happening in drought-affected regions?
In the United Arab Emirates, which had the highest water restrictions at 14 million people in 2014, there is now a pilot programme to test a water filter and water purification system.
There are also plans to deploy a water purifier in every household in the UAE.