Choice could prove difficult for Thames Water, which is trying to push through a water recycling scheme nearby

The first designated bathing water area on the River Thames in London has been proposed as one of 13 new monitored swimming areas across the country.

The Thames at Ham, in south-west London, was shortlisted as a new river bathing water after campaigners gathered evidence to show thousands of people use the river for swimming throughout the year.

Marlene Lawrence, the founder of the Teddington Bluetits, which has more than 2,000 members, put in the bathing water application alongside her colleagues. “This would be amazing for the river and for the many people who enjoy it,” she said. “We want bathing water status to be a driver of keeping the River Thames clean and it will be fantastic to have this part of the river designated.”

The designation could prove difficult for Thames Water, which is attempting to drive through a water recycling scheme to draw off tens of millions of litres of water a day from the Thames near the proposed bathing water area and replace it with treated effluent from the large Mogden sewage works in west London to help tackle water shortages.