The Tolerable Standard is a minimum standard for habitability introduced in the 1969 Housing (Scotland) Act, and updated by the 1987, 2001 and 2006 Acts. A dwelling meets the tolerable standard if it:• is structurally stable;• is substantially free from rising or penetrating damp;• has satisfactory provision for lighting, ventilation and heating;• has an adequate piped supply of wholesome water available within the house;• has a sink provided with a satisfactory supply of both hot and cold water within the house;• has a water closet or waterless closet available for the exclusive use of the occupants of the house and suitably located within the house;• has a fixed bath or shower and a wash-hand basin, each provided with a satisfactory supply of both hot and cold water and suitably located within the house;• has an effective system for the drainage and disposal of foul and surface water;• has satisfactory facilities for the cooking of food within the house;• has satisfactory access to all external doors and outbuildings;• has electrical installations that are adequate and safe to use. The "electrical installation" is the electrical wiring and associated components and fittings, but excludes equipment and appliances;• has satisfactory thermal insulation. The Scottish Housing Quality Standard (SHQS) was announced by the Minister for Communities in February 2004. A target was agreed that all social landlords must ensure that all their dwellings pass the SHQS by 2015. Private owners and private landlords are currently under no obligation to bring their properties up to a standard which meets the SHQS. However SHCS collects the same data for all dwellings to allow comparison across the housing stock. The SHQS is an aggregation of the results from 55 different elements grouped into 5 higher-level criteria, which in turn provide a single pass/fail classification for all dwellings. The 5 higher-level criteria specify that the dwelling must be: • above the statutory tolerable standard;• free from serious disrepair; • energy efficient; • with modern facilities and services; • healthy, safe and secure.