The UK Public Health Act of 1848, passed amid recurring cholera outbreaks, created a central General Board of Health and empowered the formation of local boards of health with authority over water supply, drainage, sewerage, paving, refuse and nuisance abatement. Local boards could be established where death rates were high or where ratepayers petitioned for one. Its adoption was largely permissive rather than compulsory, and enforcement remained uneven. The Act drew heavily on Edwin Chadwick's sanitary reform agenda.
It founded the public-health state's legal authority to intervene in the physical fabric of the city, linking disease to the urban environment. The principle that government could regulate building, drainage and density in the name of health underpinned later, stronger planning and housing legislation.