2,4,5-TP (Silvex)
Lca Wlsa Central Division
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.
50
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 | ND | 26 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 22 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-04-07 | 14032386-01 | ND |
| 2014-04-09 | 14032199-01 | ND |
| 2014-04-09 | 14032382-01 | ND |
| 2014-04-09 | 14032251-01 | ND |
| 2014-04-09 | 14032244-01 | ND |
| 2014-05-07 | 14032406-01 | ND |
| 2014-05-07 | 14032403-01 | ND |
| 2014-05-07 | 14032253-01 | ND |
| 2014-05-07 | 14032242-01 | ND |
| 2014-05-07 | 14032201-01 | ND |
| 2014-05-14 | 14032389-01 | ND |
| 2014-05-14 | 14032395-01 | ND |
| 2014-05-14 | 14032399-01 | ND |
| 2014-08-06 | 14073298-01 | ND |
| 2014-08-06 | 14073299-01 | ND |
| 2014-08-06 | 14073300-01 | ND |
| 2014-08-06 | 14073297-01 | ND |
| 2014-08-06 | 14073302-01 | ND |
| 2014-08-20 | 14073310-01 | ND |
| 2014-08-20 | 14073313-01 | ND |
| 2014-08-20 | 14073308-01 | ND |
| 2014-08-20 | 14073312-01 | ND |
| 2014-08-20 | 14073311-01 | ND |
| 2014-08-20 | 14073303-01 | ND |
| 2014-08-20 | 14073309-01 | ND |
| 2014-11-11 | 14073301-01 | ND |
| 2017-05-02 | 16143806 | ND |
| 2017-05-02 | 16143776 | ND |
| 2017-05-02 | 16143746 | ND |
| 2017-05-02 | 16143845 | ND |
| 2017-05-04 | 16143931 | ND |
| 2017-05-04 | 16144014 | ND |
| 2017-05-04 | 16143993 | ND |
| 2017-05-04 | 16143962 | ND |
| 2017-06-05 | 16305966 | ND |
| 2017-06-08 | 16306072 | ND |
| 2017-06-28 | 16306613 | ND |
| 2017-07-10 | 16459172 | ND |
| 2017-07-10 | 16459208 | ND |
| 2017-07-10 | 16459190 | ND |
| 2017-07-10 | 16459154 | ND |
| 2017-07-20 | 16613791 | ND |
| 2017-07-20 | 16613942 | ND |
| 2017-07-20 | 16613893 | ND |
| 2017-07-26 | 16613993 | ND |
| 2017-07-26 | 16613842 | ND |
| 2017-07-27 | 16614024 | ND |
| 2017-08-10 | 16614077 | ND |
| 2018-03-16 | 8032172-01 | ND |
| 2019-07-11 | 9072953-01 | ND |