The Environmental Working Group and Northeastern report was released Wednesday morning.

A report released Wednesday shows the number of known sites with contamination from perfluorinated chemicals nearly doubled in the last 10 months, with many familiar to residents of Southeastern North Carolina.

Conducted by the Environmental Working Group (EWG) and Northeastern University’s Social Science Environmental Health Institute, the report, titled “Mapping the Expanding PFAS Crisis” shows where industrial chemicals, firefighting foam and other pollutants have caused contamination across the country. Last year’s study showed 52 contaminated sites in 19 states, while this year’s update identified 94 sites in 22 states.

The increased level of incidences is not a surprise, scientists and advocates say, because the chemicals are becoming better understood. EWG staff also believe that as the scope of the problem becomes increasingly clear, the case for the Environmental Protection Agency (EPA) to set a national regulatory standard improves.