EUREAU Members are, in many towns and cities, responsible for the construction and maintenance of wastewater collection systems. Many existing systems are designed to receive both foul sewage and surface water following rainfall and combined sewer overflows must be provided to prevent overloading of sewers and wastewater treatment plants. There are thousands of CSOs in Europe and we recognise that they must be properly protected by upstream measures and managed to prevent flooding and minimise adverse impact on the environment and public health.
