Although a ban is not in place in its region, the water and wastewater company is asking customers to avoid using hosepipes and sprinklers on gardens and lawns.
Thames Water is encouraging customers to use water wisely, particularly around use outside.
It is also continuing to monitor river, reservoir and groundwater levels and will keep updating customers as the summer moves forward.
The company said it has seen a ‘significant’ increase in demand amid high temperatures, with the record-breaking heat and tropical nights leading to more water use by customers.
It said daily household water-use went up by an average of 30 per cent.
Andrew Tucker, water demand reduction manager at Thames Water, said: “We saw a significant rise in demand across our region recently, particularly for outdoor water-use.
“Demand increased so sharply in some areas that people were using water faster than we could produce and move it through our network,” he said.
“We’d like to thank customers who played their part by reducing usage during this extreme weather, helping to keep supplies flowing while staying hydrated and safe.
“All our water is drinking-quality and comes from local sources, so small changes, such as using a watering can, reusing water and delaying non-essential outdoor jobs can reduce what we need to take from the environment.
“We are asking customers to avoid using hosepipes and sprinklers on lawns and gardens so supplies can be maintained for everyone during periods of exceptionally-high demand.
“Our teams are working around the clock to keep water moving, fix leaks and maintain supplies.
“We’re also delivering our biggest infrastructure upgrade in 150 years and rolling out smart meters to help customers spot leaks and manage their water-use.”
