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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Mission Springs WD

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.

 

30

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
2013N/A00N/A
2014ND200ND
2015N/A00N/A
2016N/A00N/A
2017ND100ND

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
2014-02-043761-014-0830ND
2014-02-043761-011-1048ND
2014-02-043761-026-0920ND
2014-02-043761-025-0950ND
2014-02-043761-008-0750ND
2014-02-113761-013-1015ND
2014-02-113761-010-0730ND
2014-02-113761-015-0830ND
2014-02-113761-017-0950ND
2014-02-113761-030-0910ND
2014-07-073761-014-0911ND
2014-07-073761-026-0825ND
2014-07-083761-015-0849ND
2014-07-083761-010-0747ND
2014-07-083761-008-0817ND
2014-07-083761-030-0922ND
2014-07-093761-025-1118ND
2014-07-093761-017-1051ND
2014-07-093761-013-1035ND
2014-07-093761-011-1203ND
2017-06-013761-013-1108ND
2017-06-013761-015-1246ND
2017-06-053761-026-1200ND
2017-06-053761-014-1130ND
2017-06-063761-025-1300ND
2017-06-063761-017-1100ND
2017-06-063761-011-1200ND
2017-06-063761-010-0945ND
2017-06-073761-030-1200ND
2017-06-073761-008-1124ND