Scientists in Cornwall are renewing an appeal for people to take part in research that will shed light on the health effects of marine pollution.

The researchers want to compare the health of people who venture into the waves with those who stay firmly on shore, to assess the impact on health from marine pollution.

The University of Exeter Medical School is working with Surfers Against Sewage to conduct the study, with the third phase starting today, November 10.

The team are asking adults living in England and Wales to respond to a short online survey, answering questions about their health, visits to the beach, and whether or not they’ve been in the sea. They are eager to hear from both water users and non-waters users, including those who took part in the previous stages of the study in June and August. Anyone aged over 18 can participate - either online or using a smartphone.

PhD student, Anne Leonard, is leading the project and said: “We want to understand the risk of illness people face when they visit the beach. The first two rounds of data collection conducted in the summer were very successful, and now we want to understand the risk of illness people face when they visit the beach outside the bathing season.  We need as many people as possible to take part – including those who have not been in the sea recently. A large number of people taking part in the study will allow us to be much more confident in our findings.”

Over recent years concern about the cleanliness of coastal water - and its possible adverse effects on health - has led to tighter regulation and monitoring of seawater at popular beaches. 

However, Surfers Against Sewage has warned the public about more than 3,000 short term pollution incidents on English beaches – episodes that current water quality tests are unlikely to capture.

The project’s senior researcher, Dr William Gaze, said: “We know that water quality at a single beach can vary enormously throughout the day and at different points along its length. By comparing the health of those who’ve been in the sea with those who haven’t, we’re hoping to gain an insight into the risks of coastal bathing, and an understanding of whether this risk is reduced at beaches that are classified as safe by the current monitoring procedure.”

Surfers Against Sewage’s Campaign Director, Andy Cummins said: “The recent sewage spills at some of Cornwall’s most popular beaches have highlighted the importance of water quality and monitoring. It’s vital we establish a more detailed understanding of how marine pollution is affecting the health of recreational water users, so that everyone can make the most of this fantastic natural resource."

The survey goes live today (Monday, November 10) and will be available for two weeks. Those who participated in the previous rounds of data collection are encouraged to respond again.

Click here to respond www.survey.exeter.ac.uk/beachuserhealthsurvey