The West Australian government’s decision to prosecute people for supplying alcohol to under 18s has been welcomed by health advocates.

McCusker Centre for Action on Alcohol and Youth director Mike Daube said the secondary supply legislation would play an important role in supporting parents to delay young people’s use of alcohol.

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Professor Daube said there was enormous community support for the action with 94 per cent of West Australian adults concerned about alcohol and juveniles.

Drinking laws in WA have been toughened. Photo: AAP

An independent government review into WA’s Liquor Control Act released in January recommended adults who supply other people’s children with alcohol should become liable for criminal prosecution.

It said it should be a defence if the person is a parent or a guardian of a juvenile, or if the parent or guardian had given permission for the alcohol to be supplied.

Local mother-of-four Samantha Menezes also brought the issue into the spotlight with her online petition to introduce the laws in WA receiving more than 6000 signatures last year.

Racing and Gaming Minister Terry Waldron is expected to reveal details about the legislation, including possible penalties on Sunday.

Secondary supply laws are enforced in NSW, Victoria, Queensland, Tasmania and the Northern Territory.