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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

City of Baltimore

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND20ND
2015ND50ND
2016ND30ND
2017ND20ND

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
2012-07-100300002_01_00008ND
2012-07-100300002_02_00008ND
2012-12-120300002_01_ABC12ND
2012-12-120300002_02_MBC12ND
2013-02-280300002_01_00419ND
2013-02-280300002_02_00419ND
2013-11-090300002_02_05859ND
2013-11-090300002_01_05859ND
2014-01-290300002_01_00348ND
2014-01-290300002_02_00348ND
2015-06-22E15004053003ND
2015-06-22E15004053001ND
2015-12-10ASH_TND
2015-12-10PLTS_1ND
2015-12-10PLT_2ND
2016-05-23E16004413002ND
2016-05-23E16004413004ND
2016-05-23E16004413006ND
2017-06-20E17005034001ND
2017-06-20E17005035001ND