Extra warning signs have been put up in Bedford after three people drowned within a month of each other.
Three men died after getting into difficulty in the River Great Ouse in July. The first victim was 39-year-old Zbigniew Lasocki, known as Zibby, who was found dead on July 18.
A second man was killed less than a week later close to Priory Marina.
And police were once again called to the River Great Ouse early on July 31 where a third body was found.
Police, fire and rescue crews, and councillors hope the new signs at Priory Country Park, Priory Marina and other parts of the riverbank will make people think twice before entering the water.
Police think alcohol may have been involved in all three deaths but the county's fire and rescue service urged all would-be swimmers to be careful.
For more water safety advice, visit the Bedfordshire Fire and Rescue Service website.