The environmental watchdog says it will take the owners of a huge tyre dump in the state's west to court to recover almost $6 million spent eliminating the massive fire hazard.

The last tyres were finally removed from the notorious Stawell dump this week, two months after the Environmental Protection Authority took control of the site after repeated failures by the owners to clean it up.

There were a lot of tyres. Credit:Rex Martinich

At one point, the stockpile was estimated to hold 9 million tyres and was one of the largest dumps in the world. It had sat dormant for almost a decade.

It took 380 truckloads to move the 9500 tonnes of tyres, the EPA said, most of which were shredded for use as fuel.