UK oil refinery broke toxic pollution limits dozens of times, documents reveal, tell me about this news today

This story centres on legal proceedings and regulatory disclosures involving Essar Oil UK and the Stanlow Oil Refinery in Ellesmere Port, Cheshire.

Key facts revealed by the documents and Environment Agency filings:

• Massive Permit Breaches: The refinery admitted to 491 environmental permit breaches over a multi-year period (primarily between 2018 and 2020). The Environment Agency brought charges against the operator after extensive compliance investigations.

  Cheshire Live

• Toxic Discharges into Waterways: Regulatory records show the refinery repeatedly discharged effluent exceeding legal safety limits into local water channels and the River Mersey network. Breaches included elevated levels of oil, grease, non-dissolved solids, and toxic chemical compounds, including traces of cyanide.

  Cheshire Live

• Derogations and Monitoring Concerns: Disclosed records showed the site had previously operated under regulatory exemptions (derogations) that spared it from meeting certain modern emission thresholds due to high upgrade costs. Local campaign groups and environmental observers raised alarms over infrequent testing and unmonitored emission spikes near residential areas.

• Company Response: Essar entered guilty pleas to charges brought by the Environment Agency regarding water discharge limit violations. The company issued an apology, categorised the offences as historic operational issues, and reported spending approximately £24 million on wastewater infrastructure and treatment works to reroute discharges and prevent repeat occurrences.