The popular tourist island plans to tighten management over water and sanitation Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Tenerife ’s authorities have drawn up a €80m (£70m) plan to clean up the island’s coastlines and “correct its sanitation deficit”. Tenerife’s