This website provides two kinds of information about the potential health hazards of chemicals that are regulated by programs like the U.S. Toxic Release Inventory (TRI). First, it identifies the kinds of health effects specific chemicals may cause, relying on the findings of authoritative
scientific and regulatory organizations and on scientific studies compiled in major toxicology databases. Second, it ranks chemicals by their potential to cause either cancer or noncancer health risks,
relying on a sophisticated scoring system developed by scientists at the School of Public Health, University of California at Berkeley.
SORTING POLLUTION RELEASES BY HEALTH EFFECT
This website uses information from scientific sources and regulatory
agencies to identify chemicals that can cause cancer, harm the immune system, contribute to birth defects, or lead to nine other types of health impacts. Chemicals with health hazards that are widely recognized by authoritative scientific organizations are listed separately from the chemicals whose hazards are only suspected on the basis of more limited data. This website uses the State of California's official list of chemicals with known toxic properties as its source for the chemicals that are recognized to cause cancer, reproductive toxicity, and/or developmental toxicity. Lists of suspected health hazards are based on an extensive review of medical textbooks, scientific literature, and regulatory agency sources. Inclusion of a chemical on a "suspected" list should be viewed as a preliminary indication that the chemical may cause this effect, rather than a definitive finding that it does.
RANKING RELEASES BY POTENTIAL HUMAN HEALTH RISK
This website uses a sophisticated ranking system, which factors in both a
chemical's toxicity and its potential for human exposure, to identity
the particular chemicals released by manufacturing plants in your
community that are likely to pose the highest cancer and noncancer
health risks. Scientists at the School of Public
Health at the University of California at Berkeley developed this risk scoring system.