2,4,5-TP (Silvex)
Del City
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.
54
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 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 36 | 0 | ND |
| 2019 | ND | 18 | 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 |
|---|---|---|
| 2018-02-27 | 3881628 | ND |
| 2018-02-27 | 3881619 | ND |
| 2018-02-27 | 3881610 | ND |
| 2018-03-07 | 3886271 | ND |
| 2018-03-07 | 3886262 | ND |
| 2018-03-08 | 3887092 | ND |
| 2018-03-08 | 3887083 | ND |
| 2018-03-15 | 3892187 | ND |
| 2018-03-15 | 3892178 | ND |
| 2018-04-26 | 3922014 | ND |
| 2018-05-03 | 3927866 | ND |
| 2018-05-03 | 3927857 | ND |
| 2018-05-31 | 3950122 | ND |
| 2018-05-31 | 3950112 | ND |
| 2018-06-06 | 3955059 | ND |
| 2018-06-06 | 3954660 | ND |
| 2018-06-21 | 3969633 | ND |
| 2018-06-21 | 3969624 | ND |
| 2018-08-28 | 4039474 | ND |
| 2018-08-28 | 4039421 | ND |
| 2018-08-28 | 4039391 | ND |
| 2018-08-30 | 4042699 | ND |
| 2018-08-30 | 4042690 | ND |
| 2018-08-30 | 4042673 | ND |
| 2018-09-05 | 4047096 | ND |
| 2018-09-05 | 4047464 | ND |
| 2018-09-05 | 4047105 | ND |
| 2018-10-25 | 4102020 | ND |
| 2018-10-25 | 4102012 | ND |
| 2018-10-25 | 4102002 | ND |
| 2018-10-25 | 4101966 | ND |
| 2018-11-01 | 4108724 | ND |
| 2018-11-01 | 4108716 | ND |
| 2018-11-01 | 4108708 | ND |
| 2018-11-07 | 4115030 | ND |
| 2018-11-07 | 4115022 | ND |
| 2019-05-01 | 4280236 | ND |
| 2019-05-01 | 4280248 | ND |
| 2019-05-01 | 4280262 | ND |
| 2019-05-01 | 4280274 | ND |
| 2019-05-08 | 4288065 | ND |
| 2019-05-08 | 4288056 | ND |
| 2019-05-08 | 4287881 | ND |
| 2019-05-08 | 4287788 | ND |
| 2019-06-05 | 4315239 | ND |
| 2019-12-16 | 4516142 | ND |
| 2019-12-16 | 4516133 | ND |
| 2019-12-16 | 4516124 | ND |
| 2019-12-16 | 4516115 | ND |
| 2019-12-17 | 4517981 | ND |
| 2019-12-17 | 4517932 | ND |
| 2019-12-17 | 4517923 | ND |
| 2019-12-17 | 4517902 | ND |
| 2019-12-19 | 4521461 | ND |