The Sanitary Act 1866 received royal assent

The Sanitary Act 1866 compelled local areas to take responsibility for ensuring sewerage systems were in place, overcrowding in residences became illegal and local authorities were compelled (rather than just having powers) to remove nuisances to public health. Under the act, every town was required to appoint sanitary inspectors. Furthermore, the government was empowered to intervene and remove health hazards where local authorities failed to do so. The act established the definition of overcrowding and required all houses to be connected to a main sewer.