Gujarat Samachar. The 10th edition of the survey assessed over 4,700 cities on 43 indicators, with more than 27 million citizens participating in the evaluation. Navi Mumbai tops the cleanliness survey, with Surat, Vijayawada runners-up, plus other category leaders across Indian cities. Indore, India's cleanest city for eight consecutive years, ranked second in the new Mentor City category with partner town Depalpur.