All the 476 Class 1 Cities in 31 States and Union Territories, each with a population of above one lakh were surveyed. All cities are adjudged on parameters: extent of open defecation, solid waste management, seepage management, waste water treatment, drinking water quality, surface water quality of water bodies and mortality due to water-borne diseases.

Top 100:

39 cities from the southern states
27 from the east,
15 from the west,
12 from the north and
7 from the north-eastern states.

Swachh Bharat mission is being implemented in urban areas with the focus on construction of individual household, community and public toilets to eradicate open defecation and ensure door-to-door collection and disposal of municipal solid waste.

Following are the top 10 cities based on Swachh Bharat rankings announced by the union urban development ministry on Saturday(August 8th 2015).

1 Mysuru, Karnataka
2 Tiruchirappalli(Trichy), Tamil Nadu
3 Navi Mumbai, Maharashtra
4 Kochi(Cochin), Kerala
5 Hassan, Karnataka
6 Mandya, Karnataka
7 Bengaluru, Karnataka
8 Thiruvananthapuram, Kerala
9 Halishahar, West Bengal
10 Gangtok, Sikkim

Not even a single city from North India in top 10 list.