A campaign to tackle the dumping of toxic waste from fuel laundering plants has been launched.
The Northern Ireland Environment Agency and Crimestoppers have joined forces to encourage people to stop the discarding of sludge.
Stormont's Environment Minister Alex Attwood said the dumping of fuel laundering waste, a toxic mix of highly polluting chemicals, is a crime that affects us all.
"Not only does it damage and pollute the environment but disposing of the waste is a significant drain on our resources, diverting money from other services such as roads, hospitals and schools," he said.
"Reckless criminals are polluting our land, our air, our water and our wildlife, as well as risking our health."
Mr Attwood said hardly a week goes by without an incident, and urged anyone with information on criminals who launder fuel to call Crimestoppers anonymously on 0800 555 111.
Two fuel laundering plants capable of producing 15 million litres of illegal diesel every year were uncovered in Co Armagh during the week.
"The key to stopping this dumping lies in obtaining information on the people who do it.
"Crimestoppers offers a completely safe, confidential and untraceable means for people to report crime," Mr Attwood added.
"We owe it to future generations to do what we can to stop this poisoning of our environment."