Aksu (Kazakh: Ақсу / Aqsw), literally meaning the white river, formerly known as Yermak (Russian: Ермак, until 1993), is a city in Kazakhstan, in Pavlodar Region, located 50 km to the south of Pavlodar on the left bank of the Irtysh River. The municipality borders Aktogay District in the north, Bayanaul District, May District, Lebyazhye District in the south, Pavlodar District in the west, and city of Ekibastuz in the east. Population of the municipality: 67,665 (2009 Census results); 73,165 (1999 Census results).