Table 3.1 from Strategies for Establishing an Environmental Health Surveillance System in California: A Report of the SB702 Expert Working Group indicates where research supports strong or suggestive association between exposure to categories of environmental hazards and candidate diseases. A "strong" association can be said to exist when the data are specific, consistent, and plausible for the disease/exposure relationship. A "suggestive" association can be said to exist when the literature is inconsistent (e.g., some positive and some negative findings) for the disease/exposure relationship. Categorical associations are derived from research studies involving specific exposure/disease relationships. For example, inhalation of the metal chromium VI (a specific agent) is associated with lung cancer (a specific disease).

Because the working group recognizes that all human disease is multifactorial and that environmental factors may contribute to virtually all diseases, this list is not meant to be exhaustive but represents conditions considered to be important initial targets for tracking. Additional conditions should be added as new scientific data or community concerns arise.