Hakkin Dan Adam na Ruwa da Tsaftar Muhalli (HRWS) ƙa'ida ce wacce ta yarda cewa tsabtataccen ruwan sha da tsaftar muhalli suna da mahimmanci ga rayuwar kowane mutum. Majalisar Dinkin Duniya ta amince da shi a matsayin 'yancin dan adam a ranar 28 ga Yulin 2010. HRWS an amince da ita a cikin dokar ƙasa da ƙasa ta yarjejeniyoyin haƙƙin ɗan adam, sanarwa da sauran ƙa'idojin. Da Wasu masu sharhi sun samo 'yancin ɗan adam na ruwa fiye da ƙudurin Babban Taro daga Mataki na 11.1 na Yarjejeniyar Yarjejeniyar Tattalin Arziƙi, Tattalin Arziki da Al'adu (ICESCR), suna mai da ita dokar eta zama ƙarƙashin dokar ƙasa da ƙasa. Sauran yarjejeniyoyin da suka amince da HRWS a fili sun hada da Yarjejeniyar kawar da duk wasu nau'ikan nuna wariya ga mata (CEDAW) da kuma 1989 na 'yancin yara (CRC). Kudurin farko game da HRWS an zartar da shi ne daga Babban Taron Majalisar Dinkin Duniya da Majalisar Kare Hakkin Dan-Adam na Majalisar Dinkin Duniya a shekarar 2010.