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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Pennsylvania American Water Lake Scranton

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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
2015N/A00N/A
2016N/A00N/A
2017ND180ND
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
2014-04-0225330301ND
2014-05-0525528701ND
2014-05-0525528901ND
2014-05-0525529001ND
2014-05-0625528801ND
2014-05-0725529101ND
2014-05-0725528501ND
2014-05-0725528601ND
2014-05-0725529201ND
2014-07-0726103101ND
2014-08-0626497101ND
2014-08-1126497501ND
2014-08-1126497301ND
2014-08-1126497201ND
2014-08-1326497601ND
2014-08-1826497401ND
2014-08-1826497001ND
2014-08-1826496901ND
2017-04-0315948367ND
2017-05-0216107239ND
2017-05-0216107326ND
2017-05-0316107181ND
2017-05-0316107210ND
2017-05-0816107355ND
2017-05-0816107384ND
2017-05-0916107268ND
2017-05-0916107297ND
2017-07-0616424668ND
2017-08-0716577462ND
2017-08-0716577491ND
2017-08-0716577520ND
2017-08-0816577433ND
2017-08-0816577375ND
2017-08-0816577346ND
2017-08-1416577404ND
2017-09-2016738167ND