Potable water must be supplied in adequate quantity at all places of employment. Portable drinking-water dispensers must close tightly and have a tap, water may not be dipped out, containers used for drinking water are marked with their contents and kept for that use only, the common drinking cup is banned, and where single-use cups are supplied there must be a sanitary container for clean cups and a receptacle for used ones. Potable means meeting the drinking standards of the State or local authority or the EPA's national primary drinking water rules at 40 CFR part 141. Nonpotable outlets (for example industrial or firefighting water) carry signs meeting subpart G saying the water is not for drinking, washing or cooking, and no open or potential cross-connection may exist between potable and nonpotable systems. Toilets follow Table D-1: with 20 or fewer employees, 1 facility; with 20 or more, one seat plus one urinal for every 40 workers; with 200 or more, one seat plus one urinal for every 50 workers. Under temporary field conditions at least one toilet must be available. Sites without a sanitary sewer use privies (only where they cannot pollute surface water or groundwater), chemical, recirculating or combustion toilets unless local codes prohibit them. Mobile crews with transport readily available to nearby toilets are exempt. Food service must comply with local law and sound hygienic principles, and food served must be wholesome and protected from contamination. Temporary sleeping quarters, where provided, are heated, ventilated and lit. Adequate washing facilities near the worksite are required for employees applying paints, coatings, herbicides or insecticides, or doing other work with harmful contaminants. Lavatories must be available (mobile crews and normally unattended locations with transport to nearby facilities excepted), with hot and cold or tepid running water, hand soap or similar, and individual towels or air blowers, all kept sanitary. Where another standard requires showers, there is one shower per 10 employees of each sex (or fraction) showering on the same shift, with body soap, hot and cold water to a common discharge line, and individual clean towels. No one may eat or drink in a toilet room or in an area exposed to toxic material. Enclosed workplaces are built and kept, as far as reasonably practicable, to keep out vermin, with a continuing extermination program once vermin are found. Where another standard requires protective clothing against toxic contamination, change rooms with separate storage for street clothes and protective clothing are provided.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.