“We are asking everyone in Hampshire and the Isle of Wight to do their part by supporting these measures and using only the water they need.”
The Met Office said this week that January to June this year was the driest period in England since 1976.
The National Drought Group met on Tuesday to discuss a strategy to deal with exceptionally dry conditions across England.
This meeting was supposed to take place in October, but the possible drought forced an earlier meeting.
A spokesperson for the Environment Agency said: “Southern Water’s announcement of a temporary ban on its customers in Hampshire and the Isle of Wight is one of many measures it and other water companies should consider to reduce unnecessary water use and reduce resources. customers and the environment.”