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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-TP (Silvex)

City of Keizer

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND10ND
2016ND270ND
2017N/A00N/A
2018N/A00N/A
2019ND300ND

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
2014-04-15404162003-SND
2014-04-15404162002-SND
2015-04-14504151804-SND
2016-05-25605252203-SND
2016-05-25605252205-SND
2016-05-25605252211-SND
2016-05-25605252208-SND
2016-05-25605252210-SND
2016-05-25605252214-SND
2016-05-25605252201-SND
2016-05-25605252213-SND
2016-05-25605252202-SND
2016-05-25605252206-SND
2016-05-25605252212-SND
2016-05-25605252204-SND
2016-05-25605252207-SND
2016-05-25605252209-SND
2016-08-10608110104-SND
2016-08-10608110108-SND
2016-08-10608110107-SND
2016-08-10608110110-SND
2016-08-10608110103-SND
2016-08-10608110113-SND
2016-08-10608110101-SND
2016-08-10608110112-SND
2016-08-10608110102-SND
2016-08-10608110105-SND
2016-08-10608110111-SND
2016-08-10608110106-SND
2016-08-10608110109-SND
2019-06-11906112011-SND
2019-06-11906112005-SND
2019-06-11906112015-SND
2019-06-11906112009-SND
2019-06-11906112008-SND
2019-06-11906112010-SND
2019-06-11906112003-SND
2019-06-11906112014-SND
2019-06-11906112013-SND
2019-06-11906112001-SND
2019-06-11906112006-SND
2019-06-11906112012-SND
2019-06-11906112004-SND
2019-06-11906112007-SND
2019-06-11906112002-SND
2019-08-13908132512-SND
2019-08-13908132507-SND
2019-08-13908132501-SND
2019-08-13908132515-SND
2019-08-13908132502-SND
2019-08-13908132510-SND
2019-08-13908132506-SND
2019-08-13908132509-SND
2019-08-13908132505-SND
2019-08-13908132508-SND
2019-08-13908132513-SND
2019-08-13908132504-SND
2019-08-13908132511-SND
2019-08-13908132514-SND
2019-08-13908132503-SND