Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Jacobs Water Supply Corporation Plants 1 & 2

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-03-26Q1812037005ND
2018-03-26Q1812037012ND
2019-01-03Q1900175005ND
2019-01-03Q1900175012ND
2020-05-21Q2020366005ND
2020-05-21Q2020366006ND
2021-11-30Q2133011010ND
2021-11-30Q2133011011ND
2022-03-10Q2208342009ND
2022-03-10Q2208342010ND
2023-07-20Q2328746003ND
2023-10-19Q2344964003ND