Table S2 Blocks, GPs and villages of Patna in Bihar surveyed and the number of samples analyzed from each village along with samples having As >10 µg/l and >50 µg/l in this study Number Number of Number of Sl No Block GP Village of samples having samples having samples As >10 µg/l As >50 µg/l Maner Kitta chawhatar(paschim) 1 Badal Tola 69 69 67 Maner Chawhatar(paschim) 2 Benikarai tola 16 16 14 Maner Chawhatar purba 3 Chhihantar 33 24 0 Maner Hatitola 4 Dhajawa tola 45 38 36 Maner Chawhatar purba 5 Dubhaila 53 53 44 Maner Kitta chawhatar(paschim) 6 Harijan tola 29 28 25 Maner Hatitola 7 Hati tola 28 28 23 Maner Hatitola 8 Islamganj 36 36 5 Maner Chhihantar 9 Mahabir tola 19 19 18 Hatitola 10 Muji tola 15 15 11 Maner Kitta chawhatar(paschim) 11 New tola (haldichhapara) 41 41 41 Maner Kitta chawhatar(paschim) 12 Purantola (haldichhapara) 54 54 53 Maner Kitta chawhatar(paschim) 13 Ramnagar 20 20 17 Maner Magarpal 14 Ratan tola 73 70 65 Maner Kitta chawhatar(paschim) 15 Sa anna (haldichhapara) 20 20 15 Maner chawhatar(paschim) 16 Siwdihal raiketola 16 16 16 Maner Sadikpur 17 Srinagar 18 1 1 Danapur Kasim chak 18 Bara kashim chak 14 8 1 Danapur Danapur municipal 19 Chhitnawan 29 0 0 Danapur Kasimchak 20 Chhoteka kasim chak 14 14 12 Danapur Danapur municipal 21 Daudpur 47 1 0 Danapur Kasimchak 22 Firangi bhagatka tola 14 11 3
Table S2 Blocks, GPs and villages of Patna in Bihar surveyed and the number of samples analyzed from each village along with samples having As >10 µg/l and >50 µg/l in this study Sl No Block GP Village Number of samples Number of samples having As >10 µg/l Number of samples having As >50 µg/l 1 Maner Kitta chawhatar(paschim) Badal Tola 69 69 67 2 Maner Chawhatar(paschim) Benikarai tola 16 16 14 3 Maner Chawhatar purba Chhihantar 33 24 0 4 Maner Hatitola Dhajawa tola 45 38 36 5 Maner Chawhatar purba Dubhaila 53 53 44 6 Maner Kitta chawhatar(paschim) Harijan tola 29 28 25 7 Maner Hatitola Hati tola 28 28 23 8 Maner Hatitola Islamganj 36 36 5 9 Maner Chhihantar Mahabir tola 19 19 18 10 Hatitola Muji tola 15 15 11 11 Maner Kitta chawhatar(paschim) New tola (haldichhapara) 41 41 41 12 Maner Kitta chawhatar(paschim) Purantola (haldichhapara) 54 54 53 13 Maner Kitta chawhatar(paschim) Ramnagar 20 20 17 14 Maner Magarpal Ratan tola 73 70 65 15 Maner Kitta chawhatar(paschim) Sa anna (haldichhapara) 20 20 15 16 Maner chawhatar(paschim) Siwdihal raiketola 16 16 16 17 Maner Sadikpur Srinagar 18 1 1 18 Danapur Kasim chak Bara kashim chak 14 8 1 19 Danapur Danapur municipal Chhitnawan 29 0 0 20 Danapur Kasimchak Chhoteka kasim chak 14 14 12 21 Danapur Danapur municipal Daudpur 47 1 0 22 Danapur Kasimchak Firangi bhagatka tola 14 11 3
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