The Blue Lagoon near Buxton, a flooded quarry - has inviting turquoise waters, but it is so polluted it's almost as toxic as bleach.
There are warning signs saying it can cause skin and eye irritations and stomach problems, but families and young swimmers are ignoring them.
More top news
Celia Mary Renaudon, aged 70, was struck by her own car on the driveway at her home in Madeley Heath.
Jess Phillips threatened to 'cut up my Labour party membership card' over the issue.
A dry and bright day with sunny spells. Rain overnight.