Table 1.

Levels of measured PFAS in the airport drinking water, municipal drinking water, and from the private well.

PFAS (chain length)	Airport drinking water (ng/L)a	Municipal drinking water (ng/L)a	Drinking water from private wella
Perfluorinated carboxylic acids (PFCAs)
PFBA (C4)	60	$<0.6$	2.2
PFPeA (C5)	180	$<0.6$	0.63
PFHxA (C6)	330	$<0.3$	0.84
PFHpA (C7)	97	$<0.3$	0.33
Linear PFOA (C8)	210	$<0.3$	0.53
Branched PFOA (C8)	88	$<0.3$	$<0.3$
Total PFOA (C8)	300	$<0.3$	0.53
PFNA (C9)b	$<0.6$	$<0.6$	$<0.6$
PFDA (C10)b	$<0.6$	$<0.6$	$<0.6$
PFUnDA (C11)b	$<2$	$<2$	$<2$
PFDoDA (C12)b	$<2$	$<2$	$<2$
Perfluorinated sulfonic acids (PFSAs)
PFBS (C4)	200	$<0.3$	0.5
PFPeS (C5)	180	$<0.3$	$<0.3$
PFHxS (C6)	710	0.32	4.6
PFHpS (C7)	16	$<0.3$	$<0.3$
Linear PFOS (C8)	62	$<0.2$	1.7
Branched PFOS (C8)	64	$<0.2$	0.24
Total PFOS (C8)	130	$<0.2$	1.9
Fluorotelomer sulfonic acid
[6:2 FTS (C6)]	6.6	$<0.3$	$<0.3$
Sum of 11 PFASc	2,000	$<5$	12

Note: PFAS, perfluoroalkyl substances; PFBA, perfluorobutanoic acid; PFBS, perfluorobutane sulfonic acid; PFDA, perfluorodecanoic acid; PFDoDA, perfluorododecanoic acid; PFHpA, perfluoroheptanoic acid; PFHpS, perfluoroheptane sulfonic acid; PFHxA, perfluorohexanoic acid; PFHxS, perfluorohexane sulfonic acid; PFNA, perfluorononanoic acid; PFOA, perfluorooctanoic acid; PFPeA, perfluoropentanoic acid; PFOS, perfluorooctane sulfonic acid; PFPeS, perfluoropentane sulfonic acid; PFUnDA, perfluoroundecanoic acid; 6:2 FTS, fluorotelomer sulfonic acid.

^aThe data were generated from the reports of Arvidsjaur municipality, updated, and shared with authors in December 2019. Multiple water samples were taken at different locations from 31 August to 3 September 2018. We reported results from water samples obtained on 3 September 2018.

^bLevels of PFNA, PFDA, PFUnDA and PFDoDA were below detection levels and not further included in the statistical analysis in this paper.

^cSum of 11 PFAS: PFBA, PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFBS, PFHxS, PFOS, 6:2 FTS.