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EWG's Tap Water Database — 2019 UPDATE

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2,4,5-TP (Silvex)

Cary

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013N/A00N/A
2014N/A00N/A
2015ND160ND
2016N/A00N/A
2017N/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
2012-07-242073552-01ND
2012-07-242073552-02ND
2012-07-242073552-03ND
2012-07-242073552-08ND
2012-07-242073552-04ND
2012-07-242073552-05ND
2012-07-242073552-07ND
2012-07-242073552-06ND
2012-11-282113509-01ND
2012-11-282113509-08ND
2012-11-282113509-07ND
2012-11-282113509-06ND
2012-11-282113509-05ND
2012-11-282113509-04ND
2012-11-282113509-03ND
2012-11-282113509-02ND
2015-09-015090819-01ND
2015-09-015090817-04ND
2015-09-015090817-03ND
2015-09-015090817-02ND
2015-09-015090817-01ND
2015-09-015090819-04ND
2015-09-015090819-03ND
2015-09-015090819-02ND
2015-11-195113111-01ND
2015-11-195113111-02ND
2015-11-195113102-01ND
2015-11-195113106-02ND
2015-11-195113102-02ND
2015-11-195113106-01ND
2015-11-235113717-01ND
2015-11-235113717-02ND