Contaminant | MCL (mg/L) |
Alachlor | 0.002 |
Atrazine | 0.003 |
Benzo[a]pyrene | 0.0002 |
Carbofuran | 0.04 |
Chlordane | 0.002 |
2,4-D | 0.07 |
Dalapon | 0.2 |
Dibromochloropropane | 0.0002 |
Di(2-ethylhexyl)adipate | 0.4 |
Di(2-ethylhexyl)phthalate | 0.006 |
Dinoseb | 0.007 |
Diquat | 0.02 |
Endothall | 0.1 |
Endrin | 0.002 |
Ethylene Dibromide | 0.00005 |
Glyphosate | 0.7 |
Heptachlor | 0.0004 |
Heptachlor epoxide | 0.0002 |
Hexachlorobenzene | 0.001 |
Hexachlorocyclopentadiene | 0.05 |
Lindane | 0.0002 |
Methoxychlor | 0.04 |
Oxamyl | 0.2 |
Pentachlorophenol PFOS and PFOA | 0.001 0.000020 |
Picloram | 0.5 |
Polychlorinated biphenyls (PCBs) | 0.0005 |
Simazine | 0.004 |
2,3,7,8-TCDD (Dioxin) | 3x10-8 |
Toxaphene | 0.003 |
2,4,5-TP | 0.05 |
Contaminant | Detection Limit (mg/L) |
1. Alachlor | 0.0002 |
2. Aldicarb | 0.0005 |
3. Aldicarb sulfoxide | 0.0005 |
4. Aldicarb sulfone | 0.0008 |
5. Atrazine | 0.0001 |
6. Benzo[a]pyrene | 0.00002 |
7. Carbofuran | 0.0009 |
8. Chlordane | 0.0002 |
9. 2,4-D | 0.0001 |
10. Dalapon | 0.001 |
11. Dibromochloropropane | 0.00002 |
12. Di(2-ethylhexyl)adipate | 0.0006 |
13. Di(2-ethylhexyl)phthalate | 0.0006 |
14. Dinoseb | 0.0002 |
15. Diquat | 0.0004 |
16. Endothall | 0.009 |
17. Endrin | 0.00001 |
18. Ethylene dibromide | 0.00001 |
19. Glyphosate | 0.006 |
20. Heptachlor | 0.00004 |
21. Heptachlor epoxide | 0.00002 |
22. Hexachlorobenzene | 0.0001 |
23. Hexachlorocyclopentadiene | 0.0001 |
24. Lindane | 0.00002 |
25. Methoxychlor | 0.0001 |
26. Oxamyl | 0.002 |
27. Picloram | 0.0001 |
28. Polychlorinated biphenyls (PCBs as decchlorobiphenyls) | 0.0001 |
29. Pentachlorophenol | 0.00004 |
30. Simazine | 0.00007 |
31. Toxaphene | 0.001 |
32. 2,3,7,8-TCDD (Dioxin) | 0.000000005 |
33. 2,4,5-TP (Silvex) | 0.0002 |
30. Perfluorooctane Sulfonic Acid (PFOS) | 0.000002 |
31. Perfluorooctanoic Acid (PFOA) | 0.000002 |
32. Simazine | 0.00007 |
33. Toxaphene | 0.001 |
34. 2,3,7,8-TCDD (Dioxin) | 0.000000005 |
35. 2,4,5-TP (Silvex) | 0.0002 |
Table CM SDWA Approved Methodology for Synthetic Organic Contaminants |
Contaminant | EPA Methods1 | SM9 | SM Online10 | ASTM | Other |
Regulated Parameters: |
Synthetic Organic Chemicals |
2,3,7,8-TCDD (dioxin) | 1613 |
2,4-D 2 (as acids, salts and esters) | 515.2, 555, 515.1, 515.3, 515.4 | D5317-93, 98 (Reapproved 2003) |
2,4,5-TP 2 (Silvex) | 515.2, 555, 515.1, 515.3, 515.4 | 6640 B, | 6640 B-01, B-0611 | D5317-93, 98 (Reapproved 2003) |
Alachlor | 507, 525.2, 525.32 508.1, 5058, 551.1 |
Atrazine 3 | 507, 525.2, 525.3 508.1, 5058, 551.1, 536 | Syngenta4 AG-625 |
Benzo(a)pyrene | 525.2, 525.3, 550, 550.1 |
Carbofuran | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Chlordane | 508, 525.2, 525.3, 508.1, 505 |
Dalapon | 552.1 515.1, 552.2, 515.3, 515.4, 552.3, 557 | 6640 B | 6640 B-01, 06 |
Di(2-ethylhexyl)adipate | 506, 525.2, 525.3 |
Di(2-ethylhexyl)phthalate | 506, 525.2, 525.3 |
Dibromochloropropane (DBCP) | 504.1, 551.1, 524.39 |
Dinoseb | 515.2, 555, 515.1, 515.3, 515.4 | 6640 B | 6640 B-01, 06 |
Diquat | 549.2 |
Endothall | 548.1 |
Endrin | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Ethylene dibromide (EDB) | 504.1, 551.1, 524.3 |
Glyphosate | 547 | 66516 6651 B | 6651 B-01, B-06 |
Heptachlor | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Heptachlor Epoxide | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Hexachlorobenzene | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Hexachlorocyclopentadiene | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Lindane | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Methoxychlor | 508, 525.2, 525.3, 508.1, 505, 551.1 |
Oxamyl | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
PCBs (as decachlorobiphenyl) | 508A7 |
(as Aroclors) | 508.1, 508, 525.2, 525.3, 505 |
Pentachlorophenol | 515.2, 525.2, 525.3, 555, 515.1, 515.3, 515.4 | D5317-93, 98 (Reapproved 2003) |
Picloram 2 | 515.2, 555, 515.1, 515.3, 515.4 | 6640 B | 6640 B-01 | D5317-93, 98 s (Reapproved 2003) |
Perfluorooctane Sulfonic Acid (PFOS) | 537, 537.1, 533 | Wis. PFAS Method |
Perfluorooctanoic Acid (PFOA) | 537, 537.1 533 | Wis. PFAS Method |
Simazine | 507, 525.2, 525.3, 523, 536, 508.1, 5058, 551.1 |
Toxaphene | 508, 508.1, 525.2, 525.3, 505 |
Unregulated Parameters: |
Aldicarb | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Aldicarb sulfone | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Aldicarb Sulfoxide | 531.1 , 531.2 | 66105 6610 B | 6610 B-04 |
Aldrin | 505, 508, 525.2, 525.3, 508.1 |
Butachlor | 507, 525.2, 525.3 |
Carbaryl | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Dicamba | 515.1, 555, 515.2, 515.3, 515.4 | 6640 B | 6640 B-01, B-06 |
Dieldrin | 505, 508, 525.2, 525.3, 508.1 |
3-Hydroxcarbofuran | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Methomyl | 531.1, 531.2 | 66105 6610 B | 6610 B-04 |
Metolachlor | 507, 525.2, 525.3, 508.1 |
Metribuzin | 507, 525.2, 525.3, 508.1 |
Propachlor | 507, 525.2, 525.3, 508.1 |
Table D Sample Preservation, Holding Times, and Sampling Containers for Organic Parameters |
Method | Preservative2 | Sample Holding Time | Extract Holding Time and Storage Conditions | Suggested Sample Size | Type of Container |
502.22 | Sodium Thiosulfate or Ascorbic Acid, 4C, HCl pH<2 | 14 days | NA | 40 – 120 mL | Glass with PTFE1 Lined Septum |
504.1 | Sodium Thiosulfate, Cool, 4C | 14 days | 4C, 24 hours | 40 mL | Glass with PTFE1 Lined Septum |
505 | Sodium Thiosulfate, Cool, 4C | 14 days (7 days for Heptachlor) | 4C, 24 hours | 40 mL | Glass with PTFE1 Lined Septum |
506 | Sodium Thiosulfate, Cool, 4C, Dark | 14 days | 4C, Dark 14 days | 1 L | Amber Glass with PTFE1 Lined Septum |
507 | Sodium Thiosulfate, Cool, 4C, Dark | 14 days (See method for exceptions.) | 4C, Dark 14 days | I L | Amber Glass with PTFE1 Lined Cap |
508 | Sodium Thiosulfate, Cool, 4C, Dark | 7 days (See method for exceptions.) | 4C, Dark 14 days | I L | Glass with PTFE1 Lined Cap |
508A | Cool, 4C | 14 days | 30 days | I L | Amber Glass with PTFE1 Lined Cap |
508.1 | Sodium Sulfite, HCl pH<2, Cool, 4C | 14 days (See method for exceptions.) | 30 days | I L | Glass with PTFE Lined Cap |
515.1 | Sodium Thiosulfate, Cool, 4C, Dark | 14 days | 4C, Dark 28 days | I L | Amber Glass with PTFE1 Lined Cap |
515.2 | Sodium Thiosulfate or Sodium Sulfite, HCl pH<2 Cool, 4C, Dark | 14 Days | 4C, Dark 14 Days | I L | Amber Glass with PTFE1 Lined Cap |
515.3 | Sodium Thiosulfate, Cool, 4C, Dark | 14 days | 4C, Dark 14 Days | 50 mL | Amber Glass with PTFE1 Lined Cap |
515.4 | Sodium Sulfite, Dark, Cool 10C for First 48 hrs, 6C thereafter | 14 days | 0C 21 days | 40 mL | Amber Glass with PTFE1 Lined Cap |
524.22 | Ascorbic Acid or Sodium Thiosulfate, HCl pH<2, Cool 4C | 14 days | NA | 40 – 120 mL | Glass with PTFE1 Lined Septum |
524.32 | Maleic and Ascorbic Acids pH<2, 10C for first 48 hrs., 6 thereafter. If only analyzing TTHM: Sodium Thiosulfate pH<2, 10C for first 48 hrs., 6 thereafter | 14 days | NA | 40 – 120 mL | Amber Glass with PTFE1 Lined Septum |
525.2 | Sodium Sulfite, Dark, Cool, 4C, HCl pH<2 | 14 days (See method for exceptions) | 4C 30 days | 1 L | Amber Glass with PTFE1 Lined Cap |
531.1, 6610 | Sodium Thiosulfate, Monochloroacetic Acid pH<3, Cool, 4ºC | Cool 4C from collection until storage at laboratory; <-10C at the laboratory; 28 days | NA | 60 mL | Glass with PTFE1 Lined Septum |
531.2 | Sodium Thiosulfate, Potassium Dihydrogen Citrate Buffer pH<4, Dark 10C for first 48 hrs., 6ºC thereafter | 28 days | NA | 40 mL | Glass with PTFE1 Lined Septum |
537, 537.1 | Trizma – 5.0 g/L | Cool < 10° during first 48 hours after collection. 28 days | < 6° at the laboratory until extraction. 28 days | 250 mL | 250- mL polypropylene bottle |
533 | Ammonium acetate 1.0 g/L | Cool < 10° during first 48 hours after collection. 28 days | < 6° at the laboratory until extraction. 28 days | 250 mL | 250- mL polypropylene bottle |
Wis. PFAS | Trizma – 5.0 g/L | Cool < 10° during first 48 hours after collection. 28 days | < 6° at the laboratory until extraction. 28 days | 250 mL | 250- mL polypropylene bottle |
547 | Sodium Thiosulfate, Cool, 4C | 14 days; 18 mos. Frozen | NA | 60 mL | Glass with PTFE1 Lined Septum |
548.1 | Sodium Thiosulfate, HCl pH 1.5 -2 if High Biological Activity, Cool, 4C, Dark | 7 days | 4C 14 days | 250 mL | Amber Glass with PTFE1 Lined Septum |
549.2 | Sodium Thiosulfate, H2SO4 pH<2, if Biologically Active, Cool 4C, Dark | 7 days | 21 days | 250 mL | High Density Amber Plastic or Silanized Amber Glass |
550 | Sodium Thiosulfate, Cool, 4C, HCl pH<2 | 7 days | 4C, Dark 30 days | 1 L | Amber Glass with PTFE1 Lined Septum |
550.1 | Sodium Thiosulfate, Cool, 4C, HCl pH<2 | 7 days | 4C, Dark 40 days | 1 L | Amber Glass with PTFE1 Lined Septum |
551.1 | Sodium Sulfite, Ammonium Chloride, pH 4.5-5.0 with Phosphate Buffer, Cool, 4C | 14 days | 14 days <-10C | 40 mL | Glass with PTFE1 Lined Septum |
552.1 | Ammonium Chloride, Cool, 4C, Dark | 28 days | 4C, Dark 48 hrs. | 250 mL | Amber Glass with PTFE1 Lined Cap |
552.2 | Ammonium Chloride, Cool, 4C, Dark | 14 days | 4C, Dark, 7 days -10C, 14 days | 50 mL | Amber Glass with PTFE1 Lined Cap |
555 | Sodium Sulfite,HCl pH 2,Dark, Cool, 4C | 14 days | NA | 100 mL | Glass wit PTFE1 Lined Cap |
1613 | Sodium Thiosulfate,Cool, 0 - 4C, Dark | 1 year | 40 days recommended | 1 L | Amber Glass with PTFE1 Lined Cap |