In the 1930s, technological advances led to changes in many aspects of everyday life. Most homes in towns and cities had an electricity supply, running water and drains connected to the sewage system. Cheap cookers that used wood or coal were still to be found in most houses. The continuing use of blocks of ice for refrigeration purposes meant that there were limits to the ability to store food. The usual household goods of the 1930s remained largely unchanged until the 1950s.