Are there concerns about PFAS in our drinking water?

Our most recent testing for PFAS in drinking water occurred in June 2019.  Of the 14 compounds tested, only Perfluorooctanoic acid (PFOA) was detected at a level of 2 parts per trillion = 0.002 ug/L.  We are very lucky to have a source as pristine and protected as Sebago Lake.  Over 80% of the Sebago Lake watershed is forested, therefore potential sources of contamination are minimized.  Still, we must continue to be vigilant to ensure water quality.

Here are the complete results of the 2019 testing:

PFAS Name Greater Portland (Sebago Lake)  Steep Falls (Groundwater)
N-ethyl Perfluoroctanesulfona midoacetic acid ND ND
N-methyl Perfluorooctanesulfonamidoacetic acid ND ND
Perfluorobutanesulfonic acid ND ND
Perfluorodecanoic acid ND ND
Perfluorododecanoic acid ND ND
Perfluorpoheptanoic acid ND ND
Perfluorohexanesulfonic acid ND ND
Perfluorhexanoic acid ND ND
Perfluorononanoic acid ND ND
Perfluoroctanesulfonic acid (PFOS) ND ND
Perfluorooctanoic acid (PFOA) 2 ND
Perfluorotetradecanoic acid ND ND
Perfluorotridecanoic acid ND ND
Perfluoroundecanoic acid ND ND

Units = parts per trillion, ppt

ND = Not Detected


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