Table 3.

Mean, minimum, and maximum reported PFAS concentrations.

PFAS	# Well Locations	Concentration Range (ng/L)
		Min or LOQa	Maximum		Mean
			Reported	Reference	Arithmetic	95%CIb
PFPrA	12	5.1	18,000	Martin et al., 2019	2200	2900
PFBA	1298	0.004	87,000	Houtz et al., 2013	1400	430
PFPeA	1578	0.0211	300,000	Nickerson et al., 2021	3700	1400
PFHxA	1695	0.02	875,000	GHD, 2018	8100	2900
PFHpA	1695	0.02	206,000	ATSDR, 2005	1400	520
PFOA	2199	0.028	6,570,000	Moody and Field, 1999	15000	12000
PFNA	1507	0.02	66,700	McGuire et al., 2014	160	120
PFDA	1426	0.0096	143,040	McGuire et al., 2014	160	250
PFUnA	789	0.0024	760	EA, 2020	3.4	1.5
PFDoDA	769	0.019	1,040	EA, 2020	2.1	0.4
PFTriA	404	0.015	7.0	Propp et al., 2021	1.4	0.5
PFTeA	593	0.020	4,000	EA, 2020	1.2	0.4
PFHxDA	431	0.005	8.9	Wang et al., 2022	1.3	0.1
PFOcDA	430	0.02	2.92	Wang et al., 2022	0.1	0.1
PFPrS	77	0.009	176,000	Nickerson et al., 2021	22000	14000
PFBS	1555	0.01	822,000	GHD, 2018	4900	2300
PFPeS	165	0.2	374,000	GHD, 2018	25000	14000
PFHxS	1674	0.01	2,380,000	GHD, 2018	20000	7800
PFHpS	272	0.022	66,700	GHD, 2018	2600	1100
PFOS	2046	0.01	4,600,000	Nickerson et al., 2021	21000	11000
PFOSA	382	0.004	22,000	Nickerson et al., 2021	293	232
PFNS	72	2	20,000	Nickerson et al., 2021	1800	1400
PFDS	509	0.005	23,800	Anderson et al., 2016	56	99
4:2 FTS	84	0.38	12,000	Nickerson et al., 2021	1600	1000
6:2 FTS	605	0.06	14,600,000	Moody and Field, 1999	56000	58000
8:2 FTS	281	0.25	98,000	Nickerson et al., 2021	1600	1200
GenX	1291	0.060	4,000	Roostaei et al., 2021	440	84

^aReported minimum equal to limit of quantification (LOQ); cells shaded in blue

^b95% Confidence Interval (CI)