Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Oakview Water Corporation

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND90ND
2021ND60ND
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
2020-02-262002643ND
2020-03-04100104-01ND
2020-03-11100286-01ND
2020-07-14101916-01ND
2020-07-14101917-01ND
2020-07-14101918-01ND
2020-09-29103000-01ND
2020-09-29103001-01ND
2020-11-03103535-01ND
2021-03-09105357-01ND
2021-03-09105356-01ND
2021-03-10105358-01ND
2021-04-13105834-01ND
2021-04-13105835-01ND
2021-04-21105921-01ND
2022-04-05110971-01ND
2022-04-05110972-01ND
2022-05-24111761-01ND
2023-05-16117057-01ND
2023-05-16117058-01ND
2023-05-16117059-01ND