2,4,5-TP (Silvex)
Richland Township Water Authority
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.
16
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 | 5 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-06-25 | 14030479-01 | ND |
| 2014-06-25 | 14030483-01 | ND |
| 2014-08-12 | 14030485-01 | ND |
| 2014-08-12 | 14030484-01 | ND |
| 2014-09-25 | 14091904-01 | ND |
| 2015-02-10 | 12392472 | ND |
| 2015-06-09 | 12872148 | ND |
| 2015-09-15 | 13254717 | ND |
| 2015-12-08 | 13624257 | ND |
| 2016-02-16 | 13861546 | ND |
| 2017-06-13 | 16246525 | ND |
| 2017-06-13 | 16246554 | ND |
| 2017-06-13 | 16246584 | ND |
| 2017-08-18 | 16716429 | ND |
| 2017-08-18 | 16716430 | ND |
| 2017-08-18 | 16716298 | ND |