Killingly/Brooklyn Public Water Quality

According to the Water Quality Reports, the public water also contains PFOA at a level above the Federal level, but below the CT State action level.

The current CT State action level is 16 parts per trillion, or 4x higher than the federal limit. Why the disconnect?

Here is information about the federal action levels from the EPA, which is 4 parts per trillion:

Source:

https://www.ctwater.com/media/w2mgfyov/2025-crystal-ct0690011.pdf

Main website:

https://www.ctwater.com/water-quality/water-quality-reports/

Federal action levels:

https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas