Community Environmental Monitoring build skills among pollution-impacted community representatives to monitor, document and communicate pollution and its effects to regulators and the general public, and take science-based action to eliminate pollution and hold polluters accountable and to prevent the entry of environmentally destructive industries in their communities. By enabling communities to understand and articulate their environmental problems, the program aims to improve public participation in environmental decision-making.

Founded in 2003, CEM has been involved in campaigns against environmental pollution in Tamil Nadu, Himachal Pradesh and Chhattisgarh.