Geoenvironmental assessment of urban water bodies Elina Nasyrova, Alexey Elizaryev, Sergey Aksenov, Yuriy Baiduk, Elvira Kamaeva and Rasul Akhtyamov E3S Web Conf., 110 (2019) 02045 Published online: 09 August 2019 DOI: 10.1051/e3sconf/201911002045