Varthur is a suburb situated in the Eastern periphery of Bangalore City and part of the internationally famous Whitefield township. Varthur was a Hobli, but now a part of Bruhat Bengaluru Mahanagara Palike. Varthur was a Legislative Assembly in the state of Karnataka but, was split in to three legislative assemblies C.V.Raman Nagar, Mahadevapura and Krishnarajapura in the year 2008. It is also one of the wards of BBMP. Varthur is very close to ITPB. There are many IT industries in Varthur Hobli. The head office of one of the largest IT Industry, Wipro Technologies is situated at Doddakannelli, Varthur Hobli.
Some other companies like Cisco Systems, ARM, Flextronics, etc. are situated in Varthur Hobli At Varthur, people celebrate, Brahmarathotsava of Sri Chennaraya Swamy, which happens on the day of Ratha Saptami. It is one of the famous events that happen in this area. Two days later is Karaga of Sri Draupathamma (Draupadi) at Sri Dharmaraya Swamy (Yudhisthira) temple, which happens in night being visited by thousands of people from Varthur, Gunjur, Madhuranagara, Whitefield, Ramagondannahalli, Balagere, Sorahunase, Immadihalli, Harohalli, Muthsandra, Kotur. The stretch starting from HAL old Airport road till Varthur via Marathahalli, Kundlahalli, Thubarahalli,Sidhapura, Ramagundanahalli and Varthur Kodi is officially known as Varthur Main Road.
The lake ecosystem is an integral part of Bangalore, although unplanned urbanisation and industrialisation have led to the contamination of these water bodies. Varthur Lake, which has an area of 180.40 hectares (445.8 acres) is the largest lake in Bangalore and also one of the most polluted lakes in Bangalore. Its ecosystem is under continuous degradation because of sewage water from Bangalore, entering the lake from Bellandur Lake further upstream.