2,4,5-TP (Silvex)
Coast Springs - Cal. Water Service (puc)
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 | 8 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 8 | 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 |
|---|---|---|
| 2014-08-12 | 5810-002-1321 | ND |
| 2014-08-12 | 5810-005-1405 | ND |
| 2014-08-12 | 5810-010-1308 | ND |
| 2014-09-10 | 5810-003-1432 | ND |
| 2014-09-10 | 5810-004-1412 | ND |
| 2014-09-10 | 5810-006-1342 | ND |
| 2014-09-10 | 5810-007-1237 | ND |
| 2014-09-10 | 5810-008-1257 | ND |
| 2017-08-08 | 9590-005-1212 | ND |
| 2017-09-11 | 9590-003-1130 | ND |
| 2017-09-12 | 9590-004-1145 | ND |
| 2017-09-12 | 9590-008-1215 | ND |
| 2017-09-12 | 9590-010-1055 | ND |
| 2017-09-26 | 9590-002-0945 | ND |
| 2017-09-26 | 9590-006-1045 | ND |
| 2017-09-26 | 9590-007-1025 | ND |