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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Wallace, Town of

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.

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND160ND
2017N/A00N/A
2018N/A00N/A
2019ND140ND

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
2016-06-0137729_16-17206ND
2016-06-0137729_16-17207ND
2016-06-0137729_16-17209ND
2016-06-0137729_16-17210ND
2016-06-0137729_16-17211ND
2016-06-0137729_16-17212ND
2016-06-0137729_16-17213ND
2016-06-0137729_16-17205ND
2016-12-2237729_16-44568ND
2016-12-2237729_16-44567ND
2016-12-2237729_16-44566ND
2016-12-2237729_16-44565ND
2016-12-2237729_16-44563ND
2016-12-2237729_16-44562ND
2016-12-2237729_16-44561ND
2016-12-2237729_16-44564ND
2019-08-1437729_19-34853 ND
2019-08-1437729_19-34839 ND
2019-08-1437729_19-34827 ND
2019-08-1437729_19-34817 ND
2019-08-1437729_19-34806 ND
2019-08-1437729_19-34796 ND
2019-08-1937729_19-35357 ND
2019-09-1837729_19-40268 ND
2019-11-2737729_19-50855 ND
2019-11-2737729_19-50854 ND
2019-11-2737729_19-50853 ND
2019-11-2737729_19-50852 ND
2019-11-2737729_19-50851 ND
2019-11-2737729_19-50849 ND