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. 2020 Jul 9;743:140832. doi: 10.1016/j.scitotenv.2020.140832

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© 2020 The Authors. Published by Elsevier B.V.

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Fig. 1 — Left. Sampling locations in urban rivers from Quito (Guerrero-Latorre et al., 2018). M1 (0°,14′00.27″S; 78°30′42.43″O), M2 (0°11′52.47″S;78°28′06.46″O), M3 (0°00′42.98″S; 78°26′25.86″O). Right. Picture of direct discharge of wastewater into Machángara River (sampling point M1).