2,4,5-TP (Silvex)
Citizens Water of Westfield, LLC
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.
21
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 | 6 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2015-05-12 | 3241779RS28-1502 | ND |
| 2015-05-12 | 3241789RS28-1502 | ND |
| 2015-08-11 | 346345RS28-1503 | ND |
| 2015-08-11 | 346353RS28-1503 | ND |
| 2015-09-22 | 3327346RS28-1503 | ND |
| 2015-11-10 | 352656RS28-1504 | ND |
| 2016-05-10 | 3446483RS28-1602 | ND |
| 2016-05-10 | 3446494RS28-1602 | ND |
| 2016-05-10 | 3446472RS28-1602 | ND |
| 2017-05-09 | P0517244RS28-170 | ND |
| 2017-05-09 | P0517243RS28-170 | ND |
| 2017-05-09 | P0517242RS28-170 | ND |
| 2018-05-15 | 2018052275RS28-1 | ND |
| 2018-05-15 | P0518453RS28-180 | ND |
| 2018-06-12 | 2018062122RS28-1 | ND |
| 2018-08-15 | P0818579 | ND |
| 2018-08-15 | P0818580 | ND |
| 2018-08-15 | P0818581 | ND |
| 2019-05-14 | P0519-378 | ND |
| 2019-05-14 | P0519-383 | ND |
| 2019-05-14 | P0519-388 | ND |