Varthur is a suburb situated in the Eastern periphery of Bangalore City and part of the internationally famous Whitefield township. Varthur is a Hobli and part of the Bruhat Bangalore Mahanagara Palike. Varthur was a Legislative Assembly in the state of Karnataka but was split into three legislative assemblies C.V.Raman Nagar, Mahadevapura and Krishnarajapura in the year 2008. It is also one of the wards of BBMP. It is located in South-Eastern Bangalore between old Airport road and Sarjapur road. Varthur is very close to ITPB.

The South Pennar River is a river in India. Bangalore, Hosur, Krishnagiri,Kaveripattinam, and Cuddalore are the important cities on the banks of South Pennar river. This is the second longest river in Tamil Nadu, with a length of 497 km, after the Kaveri. Chandapura, Anekal, Hosur, Bagalur, and Chengam are the major industrial settlements on its banks. The river is severely polluted by industrial waste as it flows through major industrial areas in the eastern suburbs of Bangalore, Industrial parks of Hosur and Chengam.