2,4,5-TP (Silvex)
Liberty Water Lpsco
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.
25
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2016-02-17 | 6021638-02S | ND |
| 2016-02-17 | 6021638-01S | ND |
| 2016-02-18 | 6021728-01S | ND |
| 2016-02-24 | 6022183-01S | ND |
| 2016-02-25 | 6022343-01S | ND |
| 2016-03-03 | 6030386-02S | ND |
| 2016-07-12 | 6071022-02 | ND |
| 2016-07-12 | 6071022-01 | ND |
| 2016-07-21 | 6071963-02 | ND |
| 2016-07-21 | 6071963-01 | ND |
| 2016-08-24 | 6082279-01S | ND |
| 2016-09-29 | 6092535-01S | ND |
| 2017-10-05 | 7100650-03SOC | ND |
| 2019-02-27 | 19B2833-01 | ND |
| 2019-02-28 | 19B2960-01 | ND |
| 2019-03-11 | 19C1070-01 | ND |
| 2019-03-13 | 19C1387-01 | ND |
| 2019-03-14 | 19C1532-01 | ND |
| 2019-03-19 | 19C2020-01 | ND |
| 2019-08-13 | 19H1566-02 | ND |
| 2019-08-13 | 19H1566-01 | ND |
| 2019-08-20 | 19H2383-01 | ND |
| 2019-08-21 | 19H2527-02 | ND |
| 2019-08-21 | 19H2527-01 | ND |
| 2019-08-27 | 19H3101-01 | ND |