The families of teenagers Bianca Jones and Holly Bowles have been "blown away" by the support of the public after their fundraising goal was surpassed overnight.

Mark Jones, whose daughter Bianca died in Laos, has pushed for the local government to act and prevent further tragedies.

Thai police have confirmed the death of Melbourne teenager Bianca Jones, who became ill after drinking tainted alcohol during a backpacking holiday in Laos.