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Ireland Referred Back to European Court of Justice Over Urban Waste Water Treatment

13th December 2025

The European Commission has decided this week to refer Ireland back to the Court of Justice of the European Union for failing to comply with a judgment relating to the EU Urban Waste Water Treatment Directive.

Untreated urban waste water can put human health at risk and pollute lakes, rivers, soil and coastal and groundwater, the Commission says.

As Afloat previously reported, the Commission sent Ireland a letter of formal notice under Article 260(2) TFEU on November 14th, 2024.

The Commission said this week that it “considers that efforts by the Irish authorities have, to date, been insufficient and is therefore referring Ireland to the Court of Justice of the European Union with a request to impose financial sanctions”.

A judgment in the case C-427/17, Commission v. Ireland of March 2019 found Ireland had breached the requirements of the Urban Waste Water Treatment Directive (Council Directive 91/271/EEC) in 28 “agglomerations”, as in population areas.

“The Directive protects both water quality and human health by requiring that member states collect and treat their urban waste water before it is discharged into the environment,”the Commission said.

“Under the Directive, member states must have collecting systems for agglomerations with a population of 2 000 and more,”it says.

“Moreover, member states must apply secondary treatment to urban waste water before discharge and, in large agglomerations (population of 10 000 and more) which discharges in a zone sensitive to eutrophication, a more stringent treatment is required (removal of nitrates or phosphorus, which act as fertilisers),”it says.

“Since the judgment in case C-427/17, Ireland has made progress in resolving issues of compliance in 20 of the agglomerations covered by the judgment,”the Commission says.

“However, eight agglomerations remain in breach. In six agglomerations, Ireland has failed to ensure that overflows from urban waste water collecting systems are sufficiently controlled and appropriately treated,”it says.

“ In two further agglomerations, Ireland has failed to ensure that the urban waste water that enters the collecting systems are subject, before discharge, to secondary treatment or an equivalent treatment,"it says.

"Furthermore, in one agglomeration, the urban waste water is discharged to a sensitive area without being subject to a more stringent treatment,”it notes.

Published in Marine Wildlife
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Marine Wildlife Around Ireland One of the greatest memories of any day spent boating around the Irish coast is an encounter with marine wildlife.  It's a thrill for young and old to witness seabirds, seals, dolphins and whales right there in their own habitat. As boaters fortunate enough to have experienced it will testify even spotting a distant dorsal fin can be the highlight of any day afloat.  Was that a porpoise? Was it a whale? No matter how brief the glimpse it's a privilege to share the seas with Irish marine wildlife.

Thanks to the location of our beautiful little island, perched in the North Atlantic Ocean there appears to be no shortage of marine life to observe.

From whales to dolphins, seals, sharks and other ocean animals this page documents the most interesting accounts of marine wildlife around our shores. We're keen to receive your observations, your photos, links and youtube clips.

Boaters have a unique perspective and all those who go afloat, from inshore kayaking to offshore yacht racing that what they encounter can be of real value to specialist organisations such as the Irish Whale and Dolphin Group (IWDG) who compile a list of sightings and strandings. The IWDG knowledge base has increased over the past 21 years thanks in part at least to the observations of sailors, anglers, kayakers and boaters.

Thanks to the IWDG work we now know we share the seas with dozens of species who also call Ireland home. Here's the current list: Atlantic white-sided dolphin, beluga whale, blue whale, bottlenose dolphin, common dolphin, Cuvier's beaked whale, false killer whale, fin whale, Gervais' beaked whale, harbour porpoise, humpback whale, killer whale, minke whale, northern bottlenose whale, northern right whale, pilot whale, pygmy sperm whale, Risso's dolphin, sei whale, Sowerby's beaked whale, sperm whale, striped dolphin, True's beaked whale and white-beaked dolphin.

But as impressive as the species list is the IWDG believe there are still gaps in our knowledge. Next time you are out on the ocean waves keep a sharp look out!