Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

2,4,5-TP (Silvex)

City of Banning

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
2014ND70ND
2015ND30ND
2016ND60ND
2017ND70ND
2018ND40ND
2019ND40ND

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
2014-03-134790-016-1400ND
2014-03-134790-008-1000ND
2014-03-134790-003-0900ND
2014-03-184790-017-1000ND
2014-03-184790-015-0830ND
2014-03-184790-014-1300ND
2014-03-194790-009-1000ND
2015-03-184790-021-0930ND
2015-03-184790-018-1030ND
2015-03-194790-026-1340ND
2016-02-174790-007-1100ND
2016-02-174790-010-1000ND
2016-02-254790-002-0930ND
2016-02-254790-001-1030ND
2016-03-094790-028-0930ND
2016-08-254790-027-0930ND
2017-03-064790-016-0900ND
2017-03-064790-008-1130ND
2017-03-064790-009-1230ND
2017-03-084790-015-1100ND
2017-03-084790-017-0930ND
2017-05-114790-011-1245ND
2017-05-114790-012-1330ND
2018-02-149588-021-0930ND
2018-02-149588-018-0830ND
2018-05-104790-026-1320ND
2018-05-314790-003-1000ND
2019-01-304790-027-1230ND
2019-01-304790-028-1130ND
2019-02-074790-027-0900ND
2019-02-074790-010-1000ND