NI Water has announced an out-of-sewer overflow in Co Down was sparked by flushed wipes and sanitary products, triggering a major clean-up to safeguard the Mournes coastline and nearby shellfish habitats.

Specialist wastewater crews were deployed to Dundrum Bay to trace and remove a substantial blockage formed by wipes and sanitary items. Teams also cleared large amounts of sewage-related debris and carried out extensive cleansing to protect the local environment and prevent further pollution.

Ciaran McNally, NI Water Networks Field Manager for the area, said: "While our crews spent considerable time clearing this blockage and minimising the environmental impact, the reality is that it was entirely preventable.

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"Nobody wants to see pollution affecting our beautiful coastline in the Mournes area, which is a source of great pride to all who live here. Incidents like this continue to happen because items such as wipes and sanitary products are being flushed down toilets instead of being put in the bin.

"The blockage in Dundrum is a clear reminder that sewers are designed to carry only the three Ps – pee, poo and paper. Wet wipes and other household waste do not break down in the sewer network. Instead, they snag on other debris and build up over time, causing blockages that can lead to flooding and pollution incidents.

"That is why our of message of 'bin it' remains simple: If it's not one of the three Ps, it belongs in the bin and not down the toilet.

"Our education team works with local schools and it is wonderful to see the next generation learning about the impact that rogue items have on the sewer network. The area’s children are taking the lead in bringing that message home to their families. We would ask the wider community to follow their example. By working together, we can help prevent incidents like the one we have seen in Dundrum and protect the natural beauty of the Mournes coastline for everyone to enjoy."