Gibraltar, a British overseas territory, is currently discharging untreated sewage from approximately 40,000 residents and businesses directly into the Mediterranean Sea due to the absence of a wastewater treatment facility. This has been a longstanding issue, with untreated waste flowing into the sea at Europa Point, an area where the local government asserts there is significant natural dispersion.
Despite being designated as a wildlife protection zone, the region is often littered with wet wipes and plastic debris, which accumulate in algae and along the rocky shoreline, according to Lewis Stagnetto from the Nautilus Project, a local environmental organization.
The release of raw sewage can lead to harmful algal blooms that deplete oxygen levels in the water, endangering marine life. Additionally, it poses risks to fish and mammals through exposure to a mix of chemicals and plastics, potentially affecting reproduction and overall health, while also increasing the likelihood of spreading pathogens and antibiotic-resistant genes to humans.
In contrast to the UK, Gibraltar’s sewage system relies on seawater, while drinking water is sourced from desalination. The local government contends that the high salinity levels create unique challenges not faced by other wastewater treatment facilities worldwide. They also assert that wet wipes found on their beaches occasionally originate from outlets in nearby Spain.
A 2017 ruling from the European Court of Justice stated that the UK was violating wastewater regulations by not treating Gibraltar’s sewage. However, the European Commission lost its ability to take action following Brexit.
Efforts to address the sewage issue have repeatedly stalled. In 2018, Gibraltar’s government entered into a contract with a partnership of NWG Commercial Services (Northumbrian Water) and Modern Water to create a treatment plant, but the agreement collapsed when a subsidiary of Modern Water went into bankruptcy.
A spokesperson for the Gibraltar government noted that this setback significantly impacted the project’s progression. Preliminary discussions with the European Investment Bank also failed due to the repercussions of the UK’s exit from the EU.
In June 2025, the Gibraltar government awarded a 25-year contract to Eco Waters to establish a wastewater treatment facility at Europa Point. Initial work on design and geotechnical assessments has commenced, and a planning application was submitted in March 2026.
Northumbrian Water, which collaborated with Gibraltar’s government from 2003 until 2024 via a joint venture named AquaGib, sought to clarify its role amidst the sewage management failures. The company emphasized that its focus was primarily on drinking water provision and that it did not oversee daily sewage operations.
A spokesperson for Northumbrian Water stated that the company was not responsible for wastewater management in Gibraltar. Their involvement was limited to being a shareholder and strategic partner, with all operational decisions regarding wastewater management made by the Gibraltar government.
AquaGib operates several pumping stations that transport sewage from lower areas to Gibraltar’s main sewer system, but it does not manage the primary sewer or any treatment processes.
The condition of the sewer system itself has been called into question. Last year, the opposition Gibraltar Social Democrats (GSD) party highlighted the unpleasant odors of raw sewage affecting popular tourist destinations, with waste reportedly leaking through city walls and damaging marine ecosystems. The government attributed these issues to decades of insufficient investment, including periods when the GSD was in power.
The government has announced a significant initiative to upgrade the sewer infrastructure, investing £15 million in laying new sewer mains in phases, along with various relining projects aimed at reinforcing and improving the main sewer within the city limits.
Regarding the quality of beach water, the government stated that bacteriological assessments are regularly conducted at all beaches, with recent results indicating that bathing water quality in Gibraltar is excellent.
In a related context, last year, water companies in England discharged untreated sewage into rivers, lakes, and seas nearly 300,000 times, despite having treatment facilities in place.
Hugo Tagholm, director of the charity Oceana UK, expressed public outrage over the continued dumping of sewage into water bodies, calling it an environmental and economic injustice influenced by corporate interests. He urged the government to take immediate action to protect the seas from sewage and plastic contamination, emphasizing the urgent need to halt untreated sewage discharges into the Mediterranean.
