As per Swachh Survekshan for rural areas (2016) the two districts that topped the list are: 

The correct answer is Nadia, Satara.

Key Points

• As per Swachh Survekshan for rural areas (2016) the two districts that topped the list are Nadia, Satara.
• Swachh Survekshan is a ranking exercise taken up by the Government of India to assess rural and urban areas for their levels of cleanliness and active implementation of Swachhata mission initiatives in a timely and innovative manner.
• The objective of the survey is to encourage large scale citizen participation and create awareness amongst all sections of society about the importance of working together towards making towns and cities a better place to live in.
• Additionally, the survey also intends to foster a spirit of healthy competition among towns and cities to improve their service delivery to citizens, towards creating cleaner cities and towns.
• The Ministry of Urban Development, Government of India takes up the Swachh Survekshan in urban areas and the Ministry of Drinking Water and Sanitation in rural areas.
• The Quality Council of India (QCI) has been commissioned the responsibility of carrying out the assessment. 

Additional Information

• The President, Smt. DroupadiMurmu gave the Swachh Survekshan Grameen 2022 awards under large state categorygoes  to Telangana, Haryana & Tamil Nadu;
• under Small States & UT category to A&N Islands, DNH D&D and
• Sikkim in that order and to Bhiwani (Haryana) as overall Top Performing District.
• The Swachh Survekshan Gramin-2022 award ranks states and districts on the basis of their performance attained on key quantitative and qualitative Swachh Bharat Mission - Gramin (SBM-G) parameters and engagement of the rural community in the improvement of their sanitation status.