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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

Pico Rivera Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND140ND
2016ND20ND
2017N/A00N/A
2018ND120ND
2019ND30ND

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
2015-04-159588-002-0941ND
2015-04-159588-004-1115ND
2015-04-159588-009-1050ND
2015-04-159588-005-1128ND
2015-04-159588-007-1028ND
2015-04-159588-006-0927ND
2015-04-299588-012-0940ND
2015-07-279588-002-0949ND
2015-07-279588-004-1145ND
2015-07-279588-009-1054ND
2015-07-279588-005-1120ND
2015-07-279588-007-1034ND
2015-07-279588-006-0932ND
2015-07-289588-012-1109ND
2016-05-099588-008-1000ND
2016-08-099588-008-0935ND
2018-04-179588-006-0905ND
2018-04-179588-002-0930ND
2018-04-179588-005-1105ND
2018-04-179588-007-1010ND
2018-04-179588-009-1230ND
2018-04-179588-004-1120ND
2018-07-269588-006-0855ND
2018-07-269588-002-0919ND
2018-07-269588-004-1100ND
2018-07-269588-007-1000ND
2018-07-269588-005-1040ND
2018-10-199588-009-1030ND
2019-01-309588-009-1205ND
2019-05-099588-008-0915ND
2019-08-089588-008-0940ND