Drinking Water (WS) PTs, Organics - WS PT, Proficiency Testing
WS – Organochlorine Pesticides #PEO-005-12
Drinking Water Chemistry WS Proficiency Study Schedule
| 2024 WS Drinking Water Chemistry PT Study Schedule | ||
| Study Number | Study Opens | Study Closes |
| WS-137 | Jan. 8, 2024 | Feb. 21, 2024 |
| WS-138 | April 3, 2024 | May 17, 2024 |
| WS-139 | July 2, 2024 | Aug. 15, 2024 |
| WS-140 | Oct. 15, 2024 | Nov. 28, 2024 |
Analyte
| Aldrin | 0.2-2.5 ug/L |
| Dieldrin | 0.5-2.5 ug/L |
| Endrin | 0.2-2.5 ug/L |
| Heptachlor | 0.2-2.5 ug/L |
| Heptachlor epoxide(B) | 0.2-2.5 ug/L |
| Hexachlorocyclopentadiene | 2-20 ug/L |
| Hexachlorobenzene | 0.5-5 ug/L |
| Lindane | 0.2-2.5 ug/L |
| Methoxychlor | 2-20 ug/L |
| Propachlor | 1-10 ug/L |
| Trifluralin | 1-10 ug/L |
2020/2021 WS Study Schedule
| Study Number | Study Opens | Study Closes |
| WS-124 | Oct. 14 | Nov. 27, 2020 |
| WS-125 | Jan. 6 | Feb. 19 |
| WS-126 | April 14 | May 28 |
| WS-127 | July 7 | Aug. 20 |
| WS-128 | Oct. 13 | Nov. 26 |
