What is the OEP investigating in Belfast Lough?

The OEP is investigating the regulation of sewage discharges into Belfast Lough by two Stormont departments and the Utility Regulator.

Are there similar sewage problems in other Northern Ireland waterways?

Yes, the OEP acknowledges that similar wastewater and sewage issues exist at other rivers and lakes across Northern Ireland.

Home / Environment / Regulators Face Investigation Over Belfast Lough Pollution

Regulators Face Investigation Over Belfast Lough Pollution

Q: Why are Stormont departments being investigated for sewage?

The investigation aims to determine if the Department for Infrastructure and the Department of Agriculture, Environment and Rural Affairs have complied with environmental law regarding sewage discharges.

25 Nov, 2025

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Summary

OEP investigates Stormont departments over sewage discharge regulations.
Probe focuses on whether authorities complied with environmental law.
Similar wastewater issues are known to exist across Northern Ireland.

Regulators Face Investigation Over Belfast Lough Pollution

The Office for Environmental Protection (OEP) has initiated an investigation into the Department for Infrastructure (DfI), the Department of Agriculture, Environment and Rural Affairs (Daera), and the Utility Regulator regarding sewage discharges into Belfast Lough. This probe will scrutinize whether these authorities have adequately regulated the release of untreated wastewater, including raw sewage, into the lough and its tributaries, assessing compliance with environmental law.