Environment Massachusetts
The Boston Channel

One of Massachusetts most treasured waterways is contaminated with mercury, according to a new report from Environment Massachusetts.

The report found 124 waterways in the state that have advisories for mercury. The advisories instruct citizens to limit their consumption of certain fish in Massachusetts' waterways due to mercury contamination.

Coal-fired power plants are the largest source of mercury pollution in the country, with two-thirds of all airborne mercury pollution coming from power plants, the group said.