Nadu such as Ramanathapuram, Tirunelveli, Thoothukudi, and Pudukottai. Nevertheless, Dharavi has a majority of Marathi- and Hindi-speaking population. About 30% of the population of Dharavi is Muslim, compared to 19% in Mumbai overall. The Christian population is estimated to be about 6%, while the rest are predominantly Hindus (63%), with some Buddhists and other minority religions. Among the Hindus, about 20% work on animal skin production, tanneries and leather goods. Other Hindus specialise in pottery work, textile goods manufacturing, retail and trade, distilleries and other caste professions – all of these as small-scale household operations. The slum residents are from all over India, people who migrated from rural regions of many different states. The slum has numerous mosques, temples and churches to serve people of Islam, Hindu and Christian faiths; with Badi Masjid, a mosque, as the oldest religious structure in Dharavi. Location and characteristics Dharavi is a large area situated between Mumbai's two main suburban railway lines, the Western and Central Railways. It is also adjacent to Mumbai Airport. To the west of Dharavi are Mahim and Bandra, and to the north lies the Mithi River. The Mithi River empties into the Arabian Sea through the Mahim Creek. The area of Antop Hill lies to the east while the locality called Matunga is located in the South. Due to its location and poor sewage and drainage systems, Dharavi particularly becomes vulnerable to floods during the wet season. Dharavi is considered one of the largest slums in the world. The low-rise building style and narrow street structure of the area make Dharavi very cramped and confined. Like most slums, it is overpopulated. Economy In addition to the traditional pottery and textile industries in Dharavi, there is an increasingly large recycling industry, processing recyclable waste from other parts of Mumbai. Recycling in Dharavi is reported to employ approximately 250,000 people. While recycling is a major industry in the neighborhood, it is also reported to be a source of heavy pollution in the area. The district has an estimated 5,000 businesses and 15,000 single-room factories. Two major suburban railways feed into Dharavi, making it an important commuting station for people in the area going to and from work. Dharavi exports goods around the world. Often these consist of various leather products, jewellery, various accessories, and textiles. Markets for Dharavi's goods include stores in the United States, Europe, and the Middle East. The