Save Our Shoreline Jersey volunteers have been carrying out the tests on the Bellozanne outflow in the middle of the bay, as well as on numerous other outflows on the Island’s south and east coasts.
David Cabeldu, researcher for the group, said that he and his colleagues ‘indisputably’ believe that the outflow, which pumps millions of gallons of treated sewage into the bay every day, is the primary cause of the high nitrates which contribute to swathes of green sea lettuce growing in the summer months.
Environmental experts and authorities from the Infrastructure Department have said that the Bay of St Malo, which covers Jersey’s south and east coasts, is naturally high in nitrates.
