Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Paw Blue Mountain Division

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.

 

21

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
2019ND10ND
2020ND100ND
2021N/A00N/A
2022N/A00N/A
2023ND100ND

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
2019-07-1645238801ND
2020-04-2222086536.00ND
2020-04-2922278280.00ND
2020-04-2922278351.00ND
2020-05-1122278409.00ND
2020-05-1122278380.00ND
2020-07-2022668162.00ND
2020-07-2022668133.00ND
2020-08-1722861743.00ND
2020-08-1722861685.00ND
2020-08-1722861714.00ND
2023-04-1028766830.00ND
2023-04-1028766824.00ND
2023-04-1128766772.00ND
2023-04-1128766674.00ND
2023-06-0729172401.00ND
2023-07-1229363524.00ND
2023-07-1229363442.00ND
2023-07-2429363581.00ND
2023-07-2429363551.00ND
2023-07-2429363471.00ND