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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Chesterfield County Central Water System

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
2017ND70ND

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
2012-06-05E120400844ND
2012-06-05E120400839ND
2012-06-05E120400849ND
2012-06-05E120400820ND
2013-04-23E130202484ND
2013-04-23E130202511ND
2013-04-23E130202504ND
2013-04-23E130202513ND
2014-04-22E140308611ND
2014-04-22E140308602ND
2014-04-22E140308588ND
2014-04-22E140308577ND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2016-04-25E160305678ND
2016-04-25E160305662ND
2016-04-25E160305663ND
2016-04-25E160305651ND
2017-02-21E161203718ND
2017-02-21E161203728ND
2017-02-21E161203723ND
2017-04-19E170304720ND
2017-04-19E170304727ND
2017-04-19E170304728ND
2017-04-19E170304742ND