2,4,5-TP (Silvex)
Doyon Utilities Jber - Richardson
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.
27
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 | 12 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2015-02-24 | PE*3195337 | ND |
| 2015-02-24 | PE*3195670 | ND |
| 2015-02-24 | PE*3195306 | ND |
| 2015-06-23 | PE*3268439 | ND |
| 2015-06-23 | PE*3268596 | ND |
| 2015-06-23 | PE*3268611 | ND |
| 2015-09-14 | PE*3322323 | ND |
| 2015-09-14 | PE*3322334 | ND |
| 2015-09-14 | PE*3322351 | ND |
| 2015-12-07 | PE*3371142 | ND |
| 2015-12-07 | PE*3371155 | ND |
| 2015-12-07 | PE*3371165 | ND |
| 2016-03-29 | PE*3422156 | ND |
| 2017-03-06 | PE*3649756 | ND |
| 2017-05-22 | PE*3698682 | ND |
| 2017-08-28 | PE*3767826 | ND |
| 2017-10-11 | PE*3797938 | ND |
| 2018-01-29 | PE*3861794 | ND |
| 2018-01-29 | PE*3860531 | ND |
| 2018-06-25 | PE*3973218 | ND |
| 2018-06-26 | PE*3975414 | ND |
| 2018-08-21 | PE*4031294 | ND |
| 2018-08-21 | PE*4031319 | ND |
| 2018-10-02 | PE*4075655 | ND |
| 2018-10-02 | PE*4075679 | ND |
| 2019-01-29 | 4185342 | ND |
| 2019-01-29 | 4186387 | ND |