Summary of the impact

New health-evidence-based water quality criteria affecting over 24,000 EU bathing waters were implemented throughout the EU in 2012. These quantitative standards for microbial concentrations in sea water were based on WHO guidelines that were developed by Aberystwyth University's Centre for Research into Environment and Health (CREH) and founded on CREH's world-leading research. These standards (i) shape public policy by providing more rigorously-defined, quantitative health-based criteria, and (ii) improve implementation of environmental policy by facilitating the incorporation of real-time prediction of water quality, designed to provide `informed-choice' to bathers. Application of the standards on their own, i.e., without the prediction element, will result in the loss of 50% of UK's `Blue Flag' beach awards. With CREH's predictive element, however, the UK will both keep its blue flags and have higher standards of health protection. This prediction element is estimated by Defra to be worth between £1.4 and £5.3 billion to the UK economy over a period of 25 years following its initial implementation in 2012.