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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Connestee Falls

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND100ND
2016N/A00N/A
2017ND40ND
2018ND80ND
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
2014-01-157193-011514-211SND
2014-01-157193-011514-210SND
2014-04-147193-041414-210SND
2014-04-147193-041414-211SND
2014-07-087193-070814-210SND
2014-07-087193-070814-211SND
2015-01-27ND
2015-01-27ND
2015-01-27ND
2015-01-27ND
2015-01-27ND
2015-04-08ND
2015-04-08ND
2015-04-08ND
2015-04-08ND
2015-04-08ND
2017-01-117193-011117-210SND
2017-01-187193-011817-211SND
2017-04-127193-041217-211SND
2017-04-267193-042617-210SND
2018-02-147193-021418-202SND
2018-02-147193-021418-205SND
2018-02-147193-021418-206SND
2018-02-147193-021418-208SND
2018-04-197193-041918-202SND
2018-04-197193-041918-205SND
2018-04-197193-041918-206SND
2018-04-197193-041918-208SND