Advisory Against Swimming at Portstewart Strand Following Suspected Pollution

Residents and visitors have been urged to avoid entering the waters at Portstewart Strand in County Londonderry as authorities probe a suspected contamination event. The Department of Agriculture, Environment and Rural Affairs (Daera) confirmed it received reports of the potential water pollution incident at the popular beach at 20:18 BST on Tuesday. Consequently, the department has issued a temporary advisory against bathing.

To determine the origin of the suspected contamination, the Northern Ireland Environment Agency’s (NIEA) pollution response team is collaborating with Daera marine staff on an active investigation.

Daera emphasized that the current guidance is a precautionary step to safeguard public health. On Wednesday, the department stated that swimming is not advised and that dog owners must keep their pets on leads and away from the water’s edge. A Daera spokesperson explained that the measures are "intended to protect public health while further information is gathered."

Officials from Daera and Northern Ireland Water were present at the site on Wednesday to assist with the inquiry. The National Trust, which oversees the beach, noted that while the exact source remains unconfirmed, the pollution might stem from food waste or grease flowing into the sea through the River Bann.

"We are waiting for Daera Bathing Water to carry out sample testing and we will keep the advice against bathing in place until we know that the water is clear," a National Trust spokesperson said.

The temporary restriction will remain in effect while water samples undergo analysis and the investigation proceeds.

Source: BBC News Generated at: 2026-06-03 12:15:45 UTC