Twenty seven new bathing sites are being considered for England, but campaigners have said that swimming remains dangerous in many areas because of the pathogens caused by sewage dumping.

If all of these sites are granted, it will be the largest ever number of bathing sites in rivers, lakes and coastal areas approved in one year. Activists campaign for bathing water status because it means the government is obliged to test the quality of the water throughout the summer months.

Almost all of the new bathing sites – 22 out of the 27 – are in Tory constituencies. Conservatives have recently suffered in the polls because of a perceived failure to act on sewage pollution. The government is consulting on these new sites in a process that ends on 10 March.