Different levels and types of services and the human rights to water and sanitation 2015, para. 73
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Hand-washing is often seen as the key aspect of hygiene. It requires both adequate quantities of water at necessary places (in the kitchen and bathroom) and critical times (after using the toilet, before preparing food and before eating), as well as soap (or an alternative, such as ash). In many households, both of these resources may be in short supply, for accessibility or affordability reasons. A typical example of a hand-washing station is a tap connected to piped water, but there are also other solutions, such as the "tippy tap", that are at least acceptable as an interim solution. As with all water use, it is essential that there be an adequate wastewater disposal system to prevent the local (and in some cases broader) environment from being flooded with excess water.
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Non-negotiated soft law
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Special Rapporteur on the human rights to safe drinking water and sanitation