CAPE is a group of physicians, allied health care practitioners and citizens committed to a healthy and sustainable environment. As an organization composed mostly of physicians, CAPE brings its health expertise to environmental issues, and is an important voice for environmental health in Canada. CAPE addresses issues of environmental degradation by educating health care professionals and the public and advocating for stronger environmental policy.

Children's environmental health is CAPE's priority issue, and it informs all the education and advocacy that CAPE does in working for a healthier environment. CAPE's work on children's health and the environment includes the Children's Environmental Health Project , a website for health professionals and the public describing the major environmental health impacts on children. CAPE is also the lead organization of the Municipal Pesticide Use and Children's Health Project . The project educates citizens interested in pesticide issues about the health impacts that municipal pesticides can have on children.