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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Lee County WSC

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.

 

17

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
2013ND20ND
2014ND50ND
2015N/A00N/A
2016ND10ND
2017ND90ND

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
2013-10-14Q1308854026ND
2013-10-14Q1308854014ND
2014-02-25AC44557ND
2014-02-25AC44560ND
2014-02-25AC44559ND
2014-02-25AC44556ND
2014-02-25AC44558ND
2016-04-12AD32874ND
2017-01-30AD67644ND
2017-01-30AD67640ND
2017-05-04AD82851ND
2017-05-04AD82852ND
2017-05-04AD82840ND
2017-05-04AD82853ND
2017-05-30AD85966ND
2017-07-24AD90405ND
2017-10-04AD99355ND