Gibraltar’s Ongoing Dumping of Untreated Sewage into the Mediterranean

Gibraltar, home to about 40,000 residents and businesses, still pumps untreated sewage straight into the Mediterranean at Europa Point. The territory has never operated a wastewater treatment plant; its sewer system uses seawater for flushing while drinking water is supplied by desalination.

The Guardian

Untreated effluent has entered the sea for decades. A 2017 European Court of Justice ruling found the UK in breach of EU wastewater law, but Brexit removed EU enforcement. A 2018 contract with Northumbrian Water and Modern Water collapsed after Modern Water’s subsidiary entered liquidation. In June 2025 Gibraltar awarded Eco Waters a 25-year contract to build a treatment plant; a planning application was filed in 2026.

The Guardian

• Gibraltar Government – sets wastewater policy, funds infrastructure.

The Guardian

• Northumbrian Water/AquaGib – former partner, denies operational responsibility.

The Guardian

• Eco Waters – contractor for the treatment plant.

The Guardian

• Gibraltar Social Democrats (GSD) – opposition raising environmental concerns.

The Guardian

• Nautilus Project – local charity documenting beach litter; Oceana UK – marine-conservation NGO.

The Guardian

Population served: ~40,000. Eco Waters contract: 25 years. Planned sewer-mains upgrade: £15 million. EU court ruling: 2017. England’s water firms released untreated sewage ? 300,000 times last year.

The Guardian

The Gibraltar government says high natural dispersion at Europa Point justifies discharge and cites routine tests showing excellent bathing water quality at all beaches. It also highlights a major sewer-mains upgrade and recent relining of the main sewer. Northumbrian Water says it was only a shareholder, not the operator.

The Guardian

The GSD called the sewage “embarrassingly” stinking in tourist areas, alleging seepage through city walls and marine damage. Environmental groups warned untreated discharge can trigger toxic algal blooms, deplete oxygen and spread pathogens and antibiotic-resistant genes. Hugo Tagholm of Oceana UK called it an environmental and economic injustice.

Raw sewage piped into sea at Gibraltar amid reports of wet wipes on beaches

Lewis Stagnetto of the Nautilus Project noted frequent wet wipes and plastic tangled in algae and on rocks at Europa Point, highlighting visible litter alongside sewage.

Raw sewage piped into sea at Gibraltar amid reports of wet wipes on beaches

The government claims all beaches meet excellent standards, yet the GSD and NGOs report foul odors, visible pollution and ecological harm. No treatment plant operates, and post-Brexit enforcement of the 2017 EU ruling remains unclear.

The Guardian

• “Northumbrian Water was never responsible in any way for wastewater operations in Gibraltar,” — Northumbrian Water spokesperson

The Guardian

• “high levels of natural dispersion” — Gibraltar government statement

The Guardian

• “wet wipes and plastic pollution entangled in algae and all over the rocks” — Lewis Stagnetto, Nautilus Project

The Guardian

• “It’s an environmental and economic injustice, with the fingerprints of big business all over it.” — Hugo Tagholm, director, Oceana UK

The Guardian

Eco Waters’ design work continues, with construction slated after the 2026 planning approval. The £15 million sewer upgrade will proceed in phases, and the government says the new plant will eventually stop raw sewage discharge.

The Guardian