THE Vale of Glamorgan Council have expressed disappointment at adults jumping into the lake at Cosmeston County Park and arson.
In a social media post, the Vale council said that they were "disappointed to learn of a number of incidents at Cosmeston Country Park this past weekend".
The post described how park rangers had seen adults jumping into the lake with young children.
They went on to say how the adults became verbally abusive when asked not to jump in the lake.
The council warned against cold water shock, which is the body's response to being immersed in water that is 15 degrees or colder.
Cold water shock causes the blood vessels in the skin to close and speeds up the heart rate.
This can cause breathing and mobility issues and can lead to drowning.
In the post, the Vale council said that the behaviour at the lake "is an awful example being set by supposedly responsible adults to young children".
Park rangers have also reported that there have been several arson incidents.
As a consequence, plain clothes and uniformed officers will be increasing their presence in Cosmeston and Porthkerry County Parks.
The council will be working with park rangers and South Wales Police to identify anybody committing offences in the parks.
The council encouraged people to support the parks, but warned that the council will pursue anyone caught commiting a criminal offence.
The Vale council Facebook post in full:
A Vale of Glamorgan Council spokesperson said: "We are disappointed to learn of a number of incidents, at Cosmeston Country Park this past weekend, where adults were seen jumping in to the lake with young children.
"Cold water shock kills in seconds.
"Also, there are hidden dangers under the water. Again, these can seriously injure or kill.
"When confronted by our Park Ranger colleagues, the adults became verbally abusive toward them.
"This is an awful example being set by supposedly responsible adults to young children.
"Further to these incidents, Park Rangers also report that fires had been started deliberately causing damage.
"This is arson. Pure and simple.
"Plain-clothed and uniformed officers will be increasing their presence, in both Cosmeston and Porthkerry Country Parks and we will be working closely with our Park Ranger colleagues and partners from South Wales Police Cardiff and Vale of Glamorgan in identifying those committing offences, in our parks and bringing the same to justice.
"Our Country Parks and Open Spaces are wonderful facilities and ones which are there for all to enjoy.
"But when that enjoyment turns in to criminal behaviour, please be assured that we will take action."