Correction: Song et al. Metallic Iron, (Rain)Water, and the City: A Handout for Researchers and Policymakers
1 School of Earth Science and Engineering, Hohai University , Nanjing 211100, China
2 Pan African University Institute of Water and Energy Sciences-PAUWES. c/o Tlemcen University, B.P. 119, Pôle Chetouane, Tlemcen 13000, Algeria
3 Department of Agronomy, Food, Natural Resources, Animals and Environment, Agripolis, Viale del l’Università 16, University of Padua , 35020 Legnaro, Italy
4 Faculty of Arts, Letters and Social Sciences, University of Bertoua , Bertoua P.O. Box 416, Cameroon
5 Eau Potable Pour Tous (EPPT) , Bangangté P.O. Box 9362, Cameroon
6 Water Institute, Ministry of Water , Dar es Salaam P.O. Box 35059, Tanzania
7 NTWAM Water and Environment Initiative , Dar es Salaam P.O. Box 1041, Tanzania
8 Department of Hydraulics, Faculty of Technology, University of Tlemcen , Tlemcen 13000, Algeria
9 Geological Engineering Department, Kwame Nkrumah University of Science and Technology , Kumasi 00233, Ghana
10 Biosystems and Environmental Engineering Research Group , 380 Adylin, Westgate, Harare P.O. Box MP167, Zimbabwe
11 Department of Applied Geology, University of Göttingen , Goldschmidtstraße 3, D-37077 Göttingen, Germany
12 Centre for Modern Indian Studies (CeMIS), University of Göttingen , Waldweg 26, D-37073 Göttingen, Germany
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