2,4,5-TP (Silvex)
Milwaukee 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.
18
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 | 8 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2014-05-19 | 3029004,06-12 | ND |
| 2014-08-18 | 3085049-50,53-56 | ND |
| 2014-08-19 | 3086073-74,77-79 | ND |
| 2014-08-21 | 3088567-68,71-73 | ND |
| 2014-08-21 | 3088697-98,701-0 | ND |
| 2014-08-21 | 3088610-11,15-17 | ND |
| 2014-08-21 | 3088669-70,73-76 | ND |
| 2014-11-17 | 3140303-07,09-10 | ND |
| 2015-08-17 | 3302465-66,70-72 | ND |
| 2015-08-17 | 3302540-41,45-47 | ND |
| 2015-08-17 | 3302431-32,36-38 | ND |
| 2015-08-17 | 3302506-07,11-13 | ND |
| 2015-08-18 | 3303575-76,80-82 | ND |
| 2015-08-19 | 3304961-62,65-66 | ND |
| 2017-05-23 | 3699582-88 | ND |
| 2017-05-23 | 3699595-601 | ND |
| 2017-08-21 | 3762070-76,79 | ND |
| 2017-08-21 | 3762288-94,97 | ND |