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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Garden City

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

 

33

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
2014ND90ND
2015ND90ND
2016N/A00N/A
2017ND50ND
2018ND100ND
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
2014-06-111406871-001-SOCSND
2014-06-111406871-002-SOCSND
2014-06-161406B13-002-SOCSND
2014-06-161406B13-001-SOCSND
2014-06-191406E38-001-SOCSND
2014-06-20406F42-003-SOCSND
2014-06-201406F42-001-SOCSND
2014-06-201406F42-002-SOCSND
2014-06-231406G09-001-SOCSND
2015-12-021512235-002-SOCSND
2015-12-021512235-001-SOCSND
2015-12-031512318-001-SOCND
2015-12-041512402-001-SOCSND
2015-12-041512402-002-SOCSND
2015-12-091512808-001-SOCSND
2015-12-171512F26-003-SOCSND
2015-12-171512F26-002-SOCSND
2015-12-171512F26-001-SOCSND
2017-05-307019932001ND
2017-05-307019932002ND
2017-06-097020946001-SOCSND
2017-06-097020946002-SOCSND
2017-06-197021710001-SOCSND
2018-10-177068252001ND
2018-10-177068252002ND
2018-11-097070686001ND
2018-11-0970070686002ND
2018-11-167071378001ND
2018-11-267071937001ND
2018-11-307072533001ND
2018-11-307072533002ND
2018-12-037072595001ND
2018-12-217074691001ND