Last edited 01 Jul 2021



Clay Mills sewage treatment works is Severn Trent Water’s largest filtration works serving a domestic population of around 100,000 in Burton-on-Trent, Staffordshire. It is next to the restored Clay Mills Victorian sewage pumping station.

The International Levee Handbook, published by CIRIA in 2013, defines filtration (in the context of water and waterways) as: 'The function of preventing the migration of particles between two layers. This function can be accomplished by a special part (filter) or it can be accomplished naturally by the granular properties of the two zones.'

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