2,4,5-TP (Silvex)
City of San Diego
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.
60
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 9 | 0 | ND |
2015 | ND | 9 | 0 | ND |
2016 | ND | 11 | 0 | ND |
2017 | ND | 9 | 0 | ND |
2018 | ND | 16 | 0 | ND |
2019 | ND | 6 | 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 |
---|---|---|
2014-05-07 | 9437-010-0000 | ND |
2014-05-07 | 9437-006-0000 | ND |
2014-05-07 | 9437-001-0000 | ND |
2014-08-06 | 9437-010-0000 | ND |
2014-08-06 | 9437-006-0000 | ND |
2014-08-06 | 9437-001-0000 | ND |
2014-11-05 | 9437-010-0000 | ND |
2014-11-05 | 9437-006-0000 | ND |
2014-11-05 | 9437-001-0000 | ND |
2015-05-06 | 9437-001-0000 | ND |
2015-05-06 | 9437-010-0000 | ND |
2015-05-06 | 9437-006-0000 | ND |
2015-08-05 | 9437-001-0000 | ND |
2015-08-05 | 9437-010-0000 | ND |
2015-08-05 | 9437-006-0000 | ND |
2015-11-18 | 9437-001-0000 | ND |
2015-11-18 | 9437-006-0000 | ND |
2015-11-18 | 9437-010-0000 | ND |
2016-02-08 | 9437-001-0000 | ND |
2016-02-08 | 9437-006-0000 | ND |
2016-02-08 | 9437-010-0000 | ND |
2016-05-04 | 9437-001-0000 | ND |
2016-05-04 | 9437-010-0000 | ND |
2016-08-03 | 9437-006-0000 | ND |
2016-08-03 | 9437-001-0000 | ND |
2016-08-03 | 9437-010-0000 | ND |
2016-11-02 | 9437-010-0000 | ND |
2016-11-02 | 9437-001-0000 | ND |
2016-11-02 | 9437-006-0000 | ND |
2017-02-01 | 9437-001-0000 | ND |
2017-02-01 | 9437-006-0000 | ND |
2017-02-01 | 9437-010-0000 | ND |
2017-05-03 | 9437-001-0000 | ND |
2017-05-03 | 9437-006-0000 | ND |
2017-05-03 | 9437-010-0000 | ND |
2017-11-01 | 9437-001-0000 | ND |
2017-11-01 | 9437-006-0000 | ND |
2017-11-01 | 9437-010-0000 | ND |
2018-02-07 | 9437-010-0000 | ND |
2018-02-07 | 9437-001-0000 | ND |
2018-02-07 | 9437-030-0000 | ND |
2018-02-07 | 9437-006-0000 | ND |
2018-05-02 | 9437-010-0000 | ND |
2018-05-02 | 9437-006-0000 | ND |
2018-05-02 | 9437-001-0000 | ND |
2018-05-09 | 9437-030-0000 | ND |
2018-08-01 | 9437-010-0000 | ND |
2018-08-01 | 9437-006-0000 | ND |
2018-08-01 | 9437-001-0000 | ND |
2018-09-28 | 9437-030-0000 | ND |
2018-11-14 | 9437-010-0000 | ND |
2018-11-14 | 9437-030-0000 | ND |
2018-11-14 | 9437-001-0000 | ND |
2018-11-14 | 9437-006-0000 | ND |
2019-05-08 | 9437-001-0000 | ND |
2019-05-08 | 9437-010-0000 | ND |
2019-05-08 | 9437-006-0000 | ND |
2019-08-07 | 9437-010-0000 | ND |
2019-08-07 | 9437-001-0000 | ND |
2019-08-07 | 9437-006-0000 | ND |