2,4,5-TP (Silvex)
New Orleans Carrollton Waterworks
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.
46
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 | 8 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 10 | 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 |
|---|---|---|
| 2014-01-06 | AD88197 | ND |
| 2014-01-06 | AD88196 | ND |
| 2014-01-06 | AD88197 | ND |
| 2014-01-06 | AD88196 | ND |
| 2014-09-11 | AD96629 | ND |
| 2014-09-11 | AD96628 | ND |
| 2014-09-11 | AD96629 | ND |
| 2014-09-11 | AD96628 | ND |
| 2015-02-23 | 35177313001 | ND |
| 2015-02-23 | 35177313002 | ND |
| 2015-02-23 | 35177313002 | ND |
| 2015-02-23 | 35177313001 | ND |
| 2015-09-30 | 35209766001 | ND |
| 2015-09-30 | 35209766002 | ND |
| 2015-09-30 | 35209766002 | ND |
| 2015-09-30 | 35209766001 | ND |
| 2016-01-20 | 35226299001 | ND |
| 2016-01-20 | 35226299002 | ND |
| 2016-01-20 | 35226299002 | ND |
| 2016-01-20 | 35226299001 | ND |
| 2016-12-07 | 35282294006 | ND |
| 2016-12-07 | 35282147004 | ND |
| 2016-12-07 | 35282294006 | ND |
| 2016-12-07 | 35282147004 | ND |
| 2017-02-09 | 35294515002 | ND |
| 2017-02-09 | 35294515001 | ND |
| 2017-02-09 | 35294515001 | ND |
| 2017-02-09 | 35294515002 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391002 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391002 | ND |
| 2018-08-15 | 35411633001 | ND |
| 2018-08-15 | 35411633002 | ND |
| 2018-08-15 | 35411633001 | ND |
| 2018-08-15 | 35411633002 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-08-01 | 35486661001 | ND |
| 2019-08-01 | 35486665001 | ND |
| 2019-08-01 | 35486661001 | ND |
| 2019-08-01 | 35486665001 | ND |
| 2019-09-19 | 35499418001 | ND |
| 2019-09-19 | 35499418001 | ND |