The Institution of Mechanical Engineers is calling for the urgent review of European Union (EU) water legislation, which includes unreasonable wastewater quality demands which are driving up energy and chemical use as well as greenhouse gas emissions. The Institution’s Catchment Management in the Water Industry report says that while the EU Water Framework Directive has improved natural water quality, particularly in UK rivers, this has only been achieved through energy and chemical intensive treatments which are hugely damaging to the environment.