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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Franklin Water Systems 3

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND30ND
2014N/A00N/A
2015N/A00N/A
2016ND50ND
2017ND60ND

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
2013-06-24Q1302735001ND
2013-06-24Q1302735002ND
2013-06-24Q1302735003ND
2016-06-08Q1622883003ND
2016-06-08Q1622883004ND
2016-09-28Q1640760002ND
2016-12-13Q1654192001ND
2016-12-13Q1654192002ND
2017-03-21Q1711955015ND
2017-03-21Q1711955016ND
2017-06-07AD86941ND
2017-06-21Q1725672003ND
2017-07-25Q1730588013ND
2017-07-25Q1730588014ND