Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Eugene Water & Electric Board

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND70ND
2021ND40ND
2022ND30ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-06180223101A-SND
2018-05-09180543001A-SND
2018-08-01180809401A-SND
2018-11-07201811080534-SND
2019-02-04201902050084-SND
2019-05-13201905140039-SND
2019-08-05201908060215-SND
2019-11-04201911051086-SND
2020-02-03202002040124-SND
2020-08-03202008040087-SND
2020-09-10202009110103-SND
2020-09-14202009150221-SND
2020-09-21202009220096-SND
2020-11-03202011040128-SND
2020-11-16202011170113-SND
2021-02-02202102030239-SND
2021-05-10202105110438-SND
2021-08-02202108030522-SND
2021-11-01202111020067-SND
2022-02-02202202040410-SND
2022-08-0122080056-01A-SND
2022-11-0722110349-01A-SND
2023-02-0623020244-01A-SND
2023-05-0823050406-01A-SND
2023-08-01380-57291-1-SND
2023-11-06380-69947-1-SND