Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Erec Water System

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020ND140ND
2021N/A00N/A
2022N/A00N/A
2023ND140ND

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 Result
2018-03-15ND
2018-03-15ND
2018-03-15ND
2020-03-09ND
2020-03-09ND
2020-03-09ND
2020-03-09ND
2020-03-10ND
2020-03-10ND
2020-03-10ND
2020-10-06ND
2020-10-06ND
2020-10-06ND
2020-10-06ND
2020-10-06ND
2020-10-06ND
2020-10-06ND
2023-03-13ND
2023-03-13ND
2023-03-13ND
2023-03-13ND
2023-03-14ND
2023-03-14ND
2023-03-14ND
2023-07-10ND
2023-07-10ND
2023-07-10ND
2023-07-11ND
2023-07-11ND
2023-07-11ND
2023-07-11ND