PFOA and PFOS were both below their respective reporting limits.
GenX was not detected above its reporting limit.
The total PFAS concentration was 1.6 ppt.
Figure 1: Concentrations of individual PFAS compounds.
Table 1 Concentrations of PFAS compounds detected in parts-per-trillion (ppt). Gray values indicate compounds below the reporting limit (RL). Bold rows indicate occurrence in excess of the EPA Health Advisory Limit (HAL) for PFOS + PFOA of 70 ppt.
Analyte Name | Abbreviation | CAS Registry Number | Concentration (ppt) | RL (ppt) |
---|---|---|---|---|
Fluoroalkyl sulfonamides (FASAs) | ||||
Perfluorobutane sulfonamide | PFBSA | 30334-69-1 | <RL | 1 |
Perfluorohexane sulfonamide | PFHxSA | 41997-13-1 | <RL | 1 |
Perfluorooctane sulfonamide | PFOSA | 754-91-6 | <RL | 1 |
N-methyl perfluorooctanesulfonamidoacetic acid | NMeFOSAA | 2355-31-9 | <RL | 1 |
N-ethyl perfluorooctanesulfonamidoacetic acid | NEtFOSAA | 2991-50-6 | <RL | 5 |
Fluorotelomer Sulfonates | ||||
4:2 Fluorotelomer sulfonic acid | 4:2 PFS | 757124-72-4 | <RL | 1 |
6:2 Fluorotelomer sulfonic acid | 6:2 PFS | 27619-97-2 | <RL | 1 |
8:2 Fluorotelomer sulfonic acid | 8:2 PFS | 39108-34-4 | <RL | 1 |
10:2 Fluorotelomer sulfonic acid | 10:2 PFS | 120226-60-0 | <RL | 1 |
Perfluoroalkylcarboxylic acids (PFCAs) | ||||
Perfluorobutanoic acid | PFBA | 375-22-4 | <RL | 1 |
Perfluoropentanoic acid | PFPeA | 2706-90-3 | <RL | 2 |
Perfluorohexanoic acid | PFHxA | 307-24-4 | <RL | 2 |
Perfluoroheptanoic acid | PFHpA | 375-85-9 | 1.6 | 1 |
Perfluorooctanoic acid | PFOA | 335-67-1 | <RL | 1 |
Perfluorononanoic acid | PFNA | 375-95-1 | <RL | 5 |
Perfluorodecanoic acid | PFDA | 335-76-2 | <RL | 5 |
Perfluoroundecanoic acid | PFUnDA | 2058-94-8 | <RL | 1 |
Perfluorododecanoic acid | PFDoDA | 307-55-1 | <RL | 1 |
Perfluorotridecanoic acid | PFTrDA | 72629-94-8 | <RL | 2 |
Perfluorotetradecanoic acid | PFTeDA | 376-06-7 | <RL | 1 |
Perfluorohexadecanoic acid | PFHxDA | 67905-19-5 | <RL | 10 |
Perfluoroalkylether Acids (PFEAs) | ||||
Perfluoro-2-methoxyacetic acid | PFMOAA | 674-13-5 | <RL | 5 |
Perfluoro-2-methoxypropanoic acid | PMPA | 377-73-1 | <RL | 1 |
Perfluoro(3,5-dioxahexanoic) acid | PFO2HxA | 39492-88-1 | <RL | 1 |
Perfluoro-2-ethoxypropanoic acid | PEPA | 267239-61-2 | <RL | 1 |
1,1,2,2-tetrafluoro-2-(1,2,2,2-tetrafluoro-ethoxy)ethane sulfonic acid | NVHOS | N/A | <RL | 1 |
Perfluoro(3,5,7-trioxaoctanoic) acid | PFO3OA | 39492-89-2 | <RL | 1 |
Perfluoro-2-propoxypropanoic acid | GenX | 13252-13-6 | <RL | 1 |
Perfluoro(3,5,7,9-tetraoxadecanoic) acid | PFO4DA | 39492-90-5 | <RL | 1 |
Dodecafluoro-3H-4,8-dioxanonanoic acid | ADONA | 958445-44-8 | <RL | 1 |
Propanoic acid, 3-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl-1,2,2,2-tetrafluoroethoxy]-2,2,3,3-tetrafluoro- | Hydro-EVE acid | 773804-62-9 | <RL | 1 |
Ethanesulfonic acid, 2-[1-[difluoro[(1,2,2-trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro- | Nafion by-product 1 | 29311-67-9 | <RL | 1 |
Perfluoro(3,5,7,9,11-pentaoxadodecanoic) acid | PFO5DoDA | 39492-91-6 | <RL | 2 |
Ethanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro- | Nafion by-product 2 | 749836-20-2 | <RL | 1 |
9-chlorohexadecafluoro-3-oxanonane-1-sulfonate | F-53B (Major) | 73606-19-6 | <RL | 1 |
11-chloroeicosafluoro-3-oxanonane-1-sulfonate | F-53B (Minor) | 83329-89-9 | <RL | 1 |
Perfluoroalkylsulfonic Acids (PFSAs) | ||||
Perfluorobutanesulfonic acid | PFBS | 375-73-5 | <RL | 1 |
Perfluoropentanesulfonic acid | PFPeS | 2706-91-4 | <RL | 1 |
Perfluorohexanesulfonic acid | PFHxS | 355-46-4 | <RL | 2 |
Perfluoroheptanesulfonic acid | PFHpS | 375-92-8 | <RL | 1 |
Perfluorooctanesulfonic acid | PFOS | 1763-23-1 | <RL | 1 |
Perfluorononanesulfonic acid | PFNS | 68259-12-1 | <RL | 1 |
Perfluorodecanesulfonic acid | PFDS | 2806-15-7 | <RL | 10 |
Perfluorododecanesulfonic acid | PFDoS | 79780-39-5 | <RL | 10 |
Zwitterions | ||||
N-(3-dimethylaminopropan-1-yl)perfluoro-1-hexane-sulfonamide | N-AP-FHxSA | 50598-28-2 | <RL | 5 |
N-[3-(perfluoro-1-hexanesulfonamido)propan-1-yl]-N,N,N-trimethylammonium | N-TAmP-FHxSA | 38850-51-0 | <RL | 1 |
N-(carboxymethyl)-N,N-dimethyl-N-[3-(1H,1H,2H,2H-perfluoro-1-octanesulfonamido)propan-1-yl]ammonium | N-CMAmP-6:2FOSA (6:2 FTAB) | 34455-29-3 | <RL | 2 |