Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Wallace, Town of

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND80ND
2020N/A00N/A
2021N/A00N/A
2022ND100ND
2023N/A00N/A

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
2019-08-1437729_19-34796ND
2019-08-1437729_19-34806ND
2019-08-1437729_19-34817ND
2019-08-1437729_19-34827ND
2019-08-1437729_19-34839ND
2019-08-1437729_19-34853ND
2019-08-1937729_19-35357ND
2019-09-1837729_19-40268ND
2022-10-0337729_22-47907ND
2022-10-0337729_22-47932ND
2022-10-0337729_22-47931ND
2022-10-0337729_22-47930ND
2022-10-0337729_22-47929ND
2022-10-0337729_22-47903ND
2022-11-3037729_22-58956ND
2022-11-3037729_22-58957ND
2022-11-3037729_22-58958ND
2022-11-3037729_22-58959ND