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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

United Wappinger Water Improvement District

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.

 

34

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
2013ND100ND
2014ND130ND
2015N/A00N/A
2016ND60ND
2017ND50ND

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
2013-06-05AT13975ND
2013-06-05AT13978ND
2013-06-05MB13986ND
2013-06-05AT13975ND
2013-06-05HT13979ND
2013-06-05HT13980ND
2013-06-05AT13977ND
2013-06-05AT13976ND
2013-06-05MB13983ND
2013-06-12AT11021ND
2014-12-0912101426CND
2014-12-0912101426-W4ND
2014-12-0912101426HND
2014-12-0912101426-W6ND
2014-12-0912101426ND
2014-12-0912101426-W5ND
2014-12-0912101426-W3ND
2014-12-0912101427CND
2014-12-0912101427ND
2014-12-0912101427AND
2014-12-0912101426AND
2014-12-0912101426END
2014-12-0912101426-W1ND
2016-07-12UW161554ND
2016-07-12UW161552ND
2016-07-12UW161555ND
2016-07-12UW161553ND
2016-07-12UW161551ND
2016-07-12UW161556ND
2017-11-28UW172961SND
2017-11-28UW172962SND
2017-11-28UW172958KND
2017-11-28UW172963SND
2017-11-28UW172959KND