2,4,5-TP (Silvex)
Los Angeles CWWD 40, R24, 27,33-Pearblsm
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
14
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-06-18 | 5442-005-1114 | ND |
| 2015-06-18 | 5442-019-1150 | ND |
| 2015-06-18 | 5442-020-1020 | ND |
| 2015-08-19 | 5442-005-0927 | ND |
| 2015-08-19 | 5442-019-0905 | ND |
| 2015-08-19 | 5442-020-0954 | ND |
| 2018-08-27 | 9590-002-1003 | ND |
| 2018-08-27 | 9590-014-1047 | ND |
| 2018-08-28 | 9590-005-1022 | ND |
| 2018-08-28 | 9590-020-1111 | ND |
| 2018-10-09 | 9590-005-0931 | ND |
| 2018-10-09 | 9590-020-1023 | ND |
| 2018-10-10 | 9590-002-1053 | ND |
| 2018-10-10 | 9590-014-1013 | ND |