Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Tesoro Viejo Master Mwc, Inc.

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND30ND
2023ND30ND

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
2018-08-31CA2010017_002_002-201808310845ND
2022-07-22CA2010017_002_002-202207220830ND
2022-12-05CA2010017_001_001-202212051045ND
2022-12-05CA2010017_006_006-202212051415ND
2023-12-18CA2010017_002_002-202312180630ND
2023-12-19CA2010017_001_001-202312190905ND
2023-12-19CA2010017_006_006-202312190815ND