The City of Melville could employ "bin police" in order to enforce a new waste management system that requires ratepayers to sort their rubbish into their correct bins or potentially face a $200 fine.

The new proposed Waste Local Law was put before council last week and is designed to work alongside the three-bin system set to kick off in October.

The three-bin system means residents will be required to sort their rubbish between food, recyclables and garden waste.

There are also varying pick-up times for each bin.

The Waste Local Law hopes to address various concerns surrounding waste cross-contamination, and the problem of residents who may leave their bins out for extended periods of time due to the changing schedule.

The law would impose $100 fines on residents who leave their bins on the side of a road for too long before or after collection day, and $200 fines for those who fail to correctly sort their rubbish.

City of Melville mayor Russell Aubrey said the law had become necessary as it had already become costly for the council in order to deal with ongoing cross-contamination between the existing two bins.

"Like a lot of local governments we're moving to a three-bin system," he told 6PR's Morning Show.

"Our aim is to educate our community to clean up our waste streams - in other words, not to contaminate our waste streams.

"So there has to be one level of punitive action, which is to fine those people that are recidivist in their continued action of polluting our waste streams.

"If a member of our community continues to be in contradiction of our local laws in this respect, there will be a fine."

Over the course of Tuesday night's council meeting, a number of councillors raised concerns regarding the law's complexities and how it would be enforced.

Mr Aubrey said the City was open to the idea of employing someone to police bins in the area, who would issue initial warnings to once-off offenders.

"We may well be employing someone to do that... other local governments have employed people in this way," he said.

Mr Aubrey said the employee could place warning tags on resident bins to "notify them and correct their actions" and use their discretion to determine residents who were constantly in breach of the city's policy. 

Mr Aubrey denied the law was an act of "revenue-raising" and said his council would give residents every opportunity to correct their behaviour.

"The cost of contaminating those waste streams is very considerable at the end of the day and people who take advantage of doing that just for convenience because they don't know the rules are continuing to act in contravention of quite simple arrangements," he said.

"They need to have the prospect of a fine hanging over them.

"The City... doesn't want to be fining its ratepayers for not complying with what we believe to be reasonable action. We are trying to educate people, to provide the best possible outcomes for our environment."

The Waste Local Law is currently open for public comment and submissions can be made through the City of Melville.