CDD Society aims to combat the pollution of surface water and contribute to the reduction of ground water contamination through wastewater treatment. In this way, they aim to improve health, access to proper sanitation and human dignity for people in urban slum areas. CDD also aims to address the missing link in sanitation: wastewater treatment. The policy environment in India is currently focused on building toilets, while largely neglecting wastewater treatment, which only shifts the problem from one location to another. Only 300 out of 5,161 urban areas have partial sewer systems that are mostly connected to centralized treatment plants where less than 15% of total sewage is treated.
Centralized treatment has not worked well in India because it is expensive to build and maintain, and requires large sewage systems, electricity, and skilled labor. In addition, they are prone to disruptions due to road repair, civil works and natural disasters. Over 25% of capacity is not utilized due to breakdowns and high costs. These problems are compounded by the fact that decentralized wastewater treatment, when designed inappropriately, is also unreliable. In urban locations, 35% of people are connected to unscientifically designed decentralized septic tanks which result in unusable toilets and ground water contamination.