Cleanest city in India: Navi Mumbai beats 4,750 cities to become India`s cleanest city in Swachh Survekshan 2025-26 Mid-Day. Maharashtra`s Navi Mumbai has been ranked the cleanest city in India in the Swachh Survekshan 2025-26, emerging on top among 4,751 cities across the country, officials said. Navi Mumbai was declared India's cleanest city in the Swachh Survekshan 2025-2026 survey, with Surat and Vijayawada taking the second and third positions.