BOAT and jet-ski riders will be tested for drugs this summer.
Water police will conduct the tests at boat ramps, including Patterson River, Carrum until March, with the first operation this week.
A preliminary oral fluid test will be conducted with a secondary sample sent to a lab for analysis, mirroring the existing system for roadside drug tests.
Those found with illicit drugs in their system, such as methamphetamines, MDMA or cannabis, will have their marine licence cancelled for three months and face a fine of up to $2180. They can also be banned from driving a motor vehicle for up to 24 hours.
Testing could become permanent if the trial is successful.