Chapter X.12 refers to a section from the book “The human rights to water and sanitation in international human rights law” which discusses the legal foundations, normative content, and obligations of states regarding the human rights to water and sanitation. These rights are based on international treaties and resolutions, requiring states to ensure everyone has access to safe, acceptable, and affordable water for personal and domestic use, as well as access to sanitation that is safe, hygienic, secure, and provides dignity and privacy.