Northern Ireland Water (NIW) has achieved 98% in its environmental compliance target.
Environment Minister Mark H Durkan welcomed the news and said there has been a sustained improvement with compliance of discharges from wastewater treatment works.
The target is set by the Northern Ireland Authority for Utility Regulation.
Minister Durkan said: "Compliance with the Directive has improved from 86% in 2007 to 98% in 2013.
"This sustained performance is a direct result of investment through the upgrading of existing and, where required, new treatment works facilities.
"But we cannot be complacent. Compliance for all wastewater treatment works has increased from 84% in 2007 to 93% in 2012. Although there has been a slight drop in compliance to 92% in 2013 this is still a very high standard and NIW continues to outperform its 2013 target set by the Utility Regulator."
(CD/JP)
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