... The water quality problem is well pronounced in megacities due to the high population density together with the vast amount of pollutant sources. It has been investigated in many megacities all over the world: Jakarta (Costa et al., 2016), Delhi (Parween et al., 2017), Kolkata (Zaman et al., 2018), Beijing (Zhang et al., 2017), Shanghai (Zhao et al., 2016), Shenzhen (Wang et al., 2004), Tokyo (Kido et al., 2009;Saito et al., 2020), Seoul (Chang, 2005), Bangkok (Areerachakul & Sanguansintukul, 2010), Ho Chi Minh City (Vo, 2007), Istanbul (van Leeuwen & Sjerps, 2016), London (Bowes et al., 2016;Whitehead et al., 2013), Paris (Billen et al., 2001), Kinshasa (Kayembe et al., 2018), Cairo (Abdel-Satar, 2005), Buenos Aires (Rigacci et al., 2013), Rio de Janeiro (Ribeiro & Kjerfve, 2002;Villas-Boas et al., 2017), Mexico (Espinosa-García et al., 2015), New York (Mehaffey et al., 2005), and others. Moscow is the largest megacity in Europe with a population of about 12.6 million inhabitants (Demographics, 2021) and is located on the Moskva River, which experiences high anthropogenic pressure from the city's industrial enterprises, water carriage, wastewater treatment facilities, municipal wastewater, etc. Landscape components where Moscow's pollutants accumulate (soil, road dust, sediment, snow cover, rain, and atmospheric aerosols) have been recently well studied. ...