2,4,5-TP (Silvex)
Edmonson County Water District
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.
23
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 | 5 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-04-15 | 4041100-01 | ND |
| 2014-04-15 | 4041101-01 | ND |
| 2014-08-19 | 4081309-01 | ND |
| 2014-08-19 | 4081310-01 | ND |
| 2014-09-09 | 4090575-01 | ND |
| 2015-05-12 | 5050701-01 | ND |
| 2015-05-12 | 5050695-01 | ND |
| 2015-09-22 | 5091443-01 | ND |
| 2015-09-22 | 5091444-01 | ND |
| 2016-04-19 | 15729-01 | ND |
| 2016-04-19 | 15728-01 | ND |
| 2016-09-20 | 25915-01 | ND |
| 2016-09-20 | 25917-01 | ND |
| 2017-04-18 | 16867-01 | ND |
| 2017-04-18 | 16864-01 | ND |
| 2017-09-19 | 28214-01 | ND |
| 2017-09-19 | 28213-01 | ND |
| 2018-08-23 | 28260-01 | ND |
| 2018-08-24 | 28259-01 | ND |
| 2019-06-04 | 9061961-01 | ND |
| 2019-06-04 | 9062006-01 | ND |
| 2019-08-06 | 9080638-01 | ND |
| 2019-08-06 | 9080639-01 | ND |