Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

2,4,5-TP (Silvex)

Valencia Water Company

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017ND100ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-03-059590-062-1045ND
2014-03-129590-052-0850ND
2014-03-269590-073-0820ND
2014-03-269590-003-1000ND
2014-06-049590-062-0900ND
2014-06-049590-052-1000ND
2014-06-259590-073-0820ND
2014-06-259590-003-1030ND
2014-09-049590-052-0910ND
2014-12-049590-052-0950ND
2017-03-029590-062-0907ND
2017-03-029590-052-0950ND
2017-03-239590-073-0907ND
2017-03-239590-003-0805ND
2017-06-019590-062-0930ND
2017-06-019590-052-0855ND
2017-06-229590-073-0950ND
2017-06-229590-003-0850ND
2017-08-249590-073-0815ND
2017-10-269590-073-0810ND