The Environment Agency is cracking down on illegal vehicle dismantlers and unlicensed scrap metal dealers in Boston, Lincolnshire.
It is working with officers from Lincolnshire County Council and Boston Borough Council. They have carried out a third visit to sites in the area, giving operators final warnings and deadlines to comply.
Waste oil from dismantled vehicles can contaminate land and may have to be removed for disposal at significant costs to the landowner. It can also pollute groundwater and find its way into drains and rivers, the Environment Agency said.
Commercial vehicle dismantling and scrap metal businesses need permits to operate, both from the Environment Agency and planning authorities. When a vehicle has reached the end of its life it must be scrapped at an authorised treatment facility.
Environment Agency Enforcement Officer Peter Stark said: “Waste crime can have serious detrimental effects on the environment.
“We want to support legitimate permitted waste operators – who can lose income to illegal operations – while ensuring there is no harm to people and the environment from sites treating waste vehicles and scrap metal.”