Can modelling be used to predict the movement of pathogens in coastal environments? A team from Bangor University worked with water and subsurface specialists Deltares and Exeter University to create a real-time risk alert system.The River Camel in Cornwall is one of the three case studies in this project. The Camel rises on Bodmin Moor, and runs for 48km into the Celtic Sea. It has a catchment (the surrounding area where rainwater collects) of 413 km2, and the water flowing into the river suffers from wastewater pollution and agricultural run-off. The poor water quality significantly affects its thriving recreational and shellfishing industries.