Aston University microbiologist calls for public awareness and urgent action on raw sewage in UK seas

Dr. Jonathan Cox, a microbiologist at Aston University, has written an article in Microbiology magazine, warning about the dangers of raw sewage in the UK’s coastal waters. His research focuses on the pathogens found in raw sewage, which pose a serious public health threat when released into the sea.

Sewage contains harmful microorganisms that can cause gastrointestinal, respiratory, and skin infections, with risks of exposure through ingestion, inhalation, or direct contact with contaminated water. Vulnerable populations, including the elderly, pregnant women, and individuals with compromised immune systems, are at greater risk. Additionally, sewage pollution can have detrimental effects on marine life.

Raw sewage dumping has become more frequent along the UK’s coastlines, with some water companies responsible for discharging untreated sewage into the sea up to 200 times a year. Dr. Cox’s concerns hit close to home when he contracted a bacterial lung infection in spring 2024, likely due to swimming in waters contaminated by a recent sewage discharge. This was confirmed by Surfers Against Sewage, a charity that tracks water pollution incidents, who reported the discharge just hours before Dr. Cox swam in the area.

Despite this alarming experience, Dr. Cox does not recommend avoiding the water altogether. Instead, he encourages the public to check water quality reports before heading to the beach. The Safer Seas and Rivers Service (SSRS), developed by Surfers Against Sewage, provides real-time information on recent sewage discharges through an online platform and mobile app.

While the government has pledged stricter regulations and advanced sewage treatment technologies exist, Dr. Cox stresses that urgent investment is essential to safeguard public health and protect the UK’s coastal waters.

Dr. Cox concludes:

“While we wait for improved management and investment to address this issue, don’t ignore the importance of checking water quality. Prevention is always better than cure.”

The Microbiology Society, which publishes Microbiology, applauds the article for drawing attention to vital public health concerns. As a membership charity and not-for-profit publisher, the society is proud to support research that addresses both immediate challenges, such as sewage pollution, and long-term issues like antimicrobial resistance and environmental sustainability.