article_snippet.sent: I'm guessing the emergency services are told not to go into the cold water
article_snippet.sent: The group had been swimming outside of the designated area and out of hours at a time when no lifeguards were on duty, it was claimed.
article_snippet.sent: They got here after 5pm and the lifeguard was not on duty. '
article_snippet.sent: The heath is controlled by the Corporation of London and a spokesman said that officers had not entered the murky water to try and save the drowning teenager.
article_snippet.sent: A spokesman said: 'The heath constabulary officers are here to enforce bylaws in the park, The heath constabulary officers are not trained lifeguards and the murky water is dangerous and very murky, so The heath constabulary officers are advised The heath constabulary officers are not to go in until proper assistance arrives. '
article_snippet.sent: so there were no lifeguards on duty. '
article_snippet.sent: There are signs everywhere warning people not to go into the murky water at these times. '
article_snippet.sent: Visibility in the murky water is about six inches, Visibility in the water's very murky, and you can barely see in front of your face. '
article_snippet.sent: It's very rare for anyone to be drowned.'
article_snippet.sent: It later emerged One woman had a heart condition and had been warned not to swim in 'open water' by a cardiologist.