2,4,5-TP (Silvex)
City of Loma Linda
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.
14
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2019-02-21 | CA3610013_030_030-201902210850 | ND |
| 2019-02-25 | CA3610013_032_032-201902251140 | ND |
| 2020-05-04 | CA3610013_014_014-202005040900 | ND |
| 2020-05-04 | CA3610013_018_018-202005041130 | ND |
| 2020-05-04 | CA3610013_031_031-202005040920 | ND |
| 2020-05-05 | CA3610013_017_017-202005051115 | ND |
| 2021-09-01 | CA3610013_014_014-202109010640 | ND |
| 2021-09-01 | CA3610013_030_030-202109010700 | ND |
| 2021-09-01 | CA3610013_031_031-202109010735 | ND |
| 2021-09-01 | CA3610013_017_017-202109010720 | ND |
| 2021-09-01 | CA3610013_018_018-202109010810 | ND |
| 2021-10-20 | CA3610013_024_024-202110201030 | ND |
| 2022-06-07 | CA3610013_017_017-202206071105 | ND |
| 2022-09-20 | CA3610013_032_032-202209201130 | ND |