Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Geary

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.

 

13

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
2019ND20ND
2020ND10ND
2021ND30ND
2022ND40ND
2023ND30ND

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
2019-09-10SDWA-1411796-00ND
2019-12-10SDWA-1438445-00ND
2020-02-11SDWA-1457716-00ND
2021-05-03SDWA-1578109-00ND
2021-09-08SDWA-1603064-00ND
2021-12-08SDWA-1640010-00ND
2022-02-14SDWA-1670762-00ND
2022-05-17SDWA-1690630-00ND
2022-07-12SDWA-1715539-00ND
2022-10-11SDWA-1747193-00ND
2023-01-23SDWA-1771687-00ND
2023-04-26SDWA-1797120-00ND
2023-07-18SDWA-1818692-00ND