A Co Tyrone farmer has been fined £300 plus costs after silage from his farm polluted more than 2km of waterway.
Keith Russell of Camderry Road in Dromore was fined at Omagh Magistrates Court for making a polluting discharge to a tributary of the Owenreagh River, the Department of the Environment said in a statement.
"On October 28, 2010, a water quality inspector, acting on behalf of the Northern Ireland Environment Agency, observed farm effluent entering an unnamed tributary," a spokesman said.
"The source of the polluting discharge was traced to a farm owned by Mr Russell.
"The inspector estimated that more than 2km of waterway below the farm was extensively covered in fungal growth and blood worms were observed in the waterway. The storm water had been contaminated with silage.
"A sample confirmed that the discharge contained poisonous matter which was potentially harmful to fish life in the receiving waterway."