The Public Health Act 1875 described the structure and required minimum size of terraced houses and the street pattern that towns had to adopt. This made it difficult to place a semi in a large garden. The law stated that the building lines should be 11m apart, and that there should be rear access to allow the removal of nightsoil. In 1875, it was thought that having a privy inside the house was unhealthy. Cold water came from a stand pipe in the yard, and lighting was by candle or by gas mantles. Heating and cooking was done by coal, and hot water was boiled in kettles on the living room range. Kitchens were rare – the wet activities were done outside or in the scullery. Later, water was piped to the house, and some living room fires had a back boiler for heating.