Ahen was the first local board of health created and how effective was it?

Local boards or local boards of health were local authorities in urban areas of England and Wales from 1848 to 1894. They were formed in response to cholera epidemics and were given powers to control sewers, clean the streets, regulate environmental health risks including slaughterhouses and ensure the proper supply of water to their districts. Local boards were eventually merged with the corporations of municipal boroughs in 1873, or became urban districts in 1894.