EPA 1633 is intended to eventually eliminate the use of “modified” drinking water methods and non-standard in-house laboratory standard operating procedures. The list of PFAS in EPA 1633 draft includes all PFAS in existing EPA drinking water methods 533, 537.1, and the screening method 8327.
The list of analytes for EPA 1633 can be found here:
| Analyte Description | CAS Number |
|---|---|
| Perfluorobutanoic acid (PFBA) | 375-22-4 |
| Perfluoropentanoic acid (PFPeA) | 2706-90-3 |
| Perfluorohexanoic acid (PFHxA) | 307-24-4 |
| Perfluoroheptanoic acid (PFHpA) | 375-85-9 |
| Perfluorooctanoic acid (PFOA) | 335-67-1 |
| Perfluorononanoic acid (PFNA) | 375-95-1 |
| Perfluorodecanoic acid (PFDA) | 335-76-2 |
| Perfluoroundecanoic acid (PFUnA) | 2058-94-8 |
| Perfluorododecanoic acid (PFDoA) | 307-55-1 |
| Perfluorotridecanoic acid (PFTriA) | 72629-94-8 |
| Perfluorotetradecanoic acid (PFTeA) | 376-06-7 |
| Perfluorobutanesulfonic acid (PFBS) | 375-73-5 |
| Perfluoropentanesulfonic acid (PFPeS) | 2706-91-4 |
| Perfluorohexanesulfonic acid (PFHxS) | 355-46-4 |
| Perfluoroheptanesulfonic Acid (PFHpS) | 375-92-8 |
| Perfluorooctanesulfonic acid (PFOS) | 1763-23-1 |
| Perfluorononanesulfonic acid (PFNS) | 68259-12-1 |
| Perfluorodecanesulfonic acid (PFDS) | 335-77-3 |
| Perfluorododecanesulfonic acid (PFDoS) | 79780-39-5 |
| Perfluorooctanesulfonamide (FOSA) | 754-91-6 |
| NMeFOSAA | 2355-31-9 |
| NEtFOSAA | 2991-50-6 |
| 4:2 FTS | 757124-72-4 |
| 6:2 FTS | 27619-97-2 |
| 8:2 FTS | 39108-34-4 |
| NEtFOSA | 4151-50-2 |
| NMeFOSA | 31506-32-8 |
| NMeFOSE | 24448-09-7 |
| NEtFOSE | 1691-99-2 |
| 9Cl-PF3ONS | 756426-58-1 |
| HFPO-DA (GenX) | 13252-13-6 |
| 11Cl-PF3OUdS | 763051-92-9 |
| ADONA | 919005-14-4 |
| 3:3 FTCA | 356-02-5 |
| 5:3 FTCA | 914637-49-3 |
| 7:3 FTCA | 812-70-4 |
| NFDHA | 151772-58-6 |
| PFMBA | 863090-89-5 |
| PFMPA | 377-73-1 |
| PFEESA | 113507-82-7 |