Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Cecilia 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.

 

22

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
2019ND60ND
2020ND50ND
2021ND40ND
2022ND30ND
2023ND40ND

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
2019-02-1835449808002ND
2019-02-1835449808003ND
2019-02-1835449808001ND
2019-02-1835449808002ND
2019-02-1835449808003ND
2019-02-1835449808001ND
2020-03-3035540639001ND
2020-09-2835581253002ND
2020-09-2835581253003ND
2020-12-0735597474003ND
2020-12-0735597474004ND
2021-02-0135608904004ND
2021-02-0135608904003ND
2021-05-0335630992003ND
2021-05-0335630992004ND
2022-01-3135694190001ND
2022-01-3135694190002ND
2022-01-3135694190003ND
2023-02-1335779756005ND
2023-02-1335779756009ND
2023-11-0635840310001ND
2023-11-0635840310002ND