To expand the base of knowledge regarding perceptions about potential environmental threats to children's health, a survey was conducted in the Northwest United States. Samples of Head Start parents, PTA presidents, public health officials, school nurses, naturopathic physicians, family practitioners, and pediatricians were mailed a questionnaire inquiring into the nature and degree of concerns about pediatric environmental health. The response rate was 24%. Trends in the data showed disparities in perceptions regarding levels of concern and exposure concerns between respondent categories. Disparities also existed regarding information resources used for children's environmental health. Recognizing differences in perceptions of children's environmental health, as demonstrated in these results, may be useful for risk communication and resource allocation, especially in the context of the wide variety of health belief models. Such knowledge may help clarity situations with environmental health risk concerns, including clinical, public health, and educational circumstances.