A final report is available that summarizes existing information on the extent and severity of the occurrence of toxic contaminants in the Chesapeake Bay and its watershed. The report also identifies research and monitoring gaps that could be considered to improve the understanding of the extent and severity of toxic contaminant occurrence. Findings in this report will be used during 2013 by the Chesapeake Bay Program partnership to consider whether to adopt new goals for reducing inputs of toxic contaminants entering the Bay and watershed. Strategies for achieving any established goals will be developed by 2015.
The findings in this report are based on a review of integrated water-quality assessment reports from the jurisdictions in the Bay watershed (Delaware, Maryland, New York, Pennsylvania, Virginia, West Virginia, and Washington, D.C.), Federal and State reports, and articles in scientific journals. The authors focused on summarizing results of studies conducted mostly since 2000 and, in particular, the 2010 jurisdictional water-quality assessment reports were used to define the extent and severity of occurrence of the following contaminant groups:
- Polychlorinated Biphenyls (PCBs)
- Dioxins and Furans
- Polycyclic Aromatic Hydrocarbons (PAHs)
- Petroleum Hydrocarbons
- Household and Personal Care Products
- Polybrominated Diphenyl Ethers (PBDEs)
- Biogenic Hormones
- Metals and Metalloids
Download the report (6 MB .pdf file).