Since its establishment, organization has performed various projects in the area of Water and sanitation and hygiene, Livelihood and income generation, Social mobilization, Micro enterprise development, Immediate relief, Disaster early recovery and small scale programs in Capacity Building, Health, hygiene, Sanitation and Empowerment Sector in Sunsari district in the partnership with Local government bodies, Govt. line agencies, different International agencies, UN agencies and community people. In the area of water, Hygiene and sanitation CSDC has been working since last 15 years with the partnership of different NGOs, I/NGOs, GOs and local bodies Like; UNICEF, World Vision, Plan International Nepal, WSSDO, DDC and community level groups and committees.