Polychlorinated Biphenyls (PCBs) are persistent organic pollutants that do not break down easily and, therefore, last in the environment for extended periods of time. Once released into the environment, PCBs last for decades and make it into the tissues of aquatic animals, including fish. The intentional production of PCBs was banned by the U. S. Environmental Protection Agency (EPA) in the late 1970s. However, there is a growing body of research suggesting that PCBs can be produced unintentionally through certain industrial processes – like pigment production used in paints and inks. These more recently created PCBs, along with PCBs produced in the past continue cycling through the environment today.

DEQ began collecting fish tissue in state waters in 1993. The initial elevated fish tissue PCB levels resulted in the Virginia Department of Health (VDH) issuing fish consumption advisories, which grew in number and size as more data was collected through following years of monitoring. All PCB fish consumption advisories are added to Virginia’s Clean Water Act list of impaired waters and, therefore, require the development of a cleanup plan (i.e., a total maximum daily load or TMDL).

Learn more about PCBs by watching this short video.

Below are the current PCB TMDL initiatives being carried out by DEQ, with details and more information on each projects.

James River
James River, Maury River and Jackson River
Tidal James River and Elizabeth River
Mountain Run
Regulated Stakeholder Resources