Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Solano Irrigation District - Pleasant Hills Ranch

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.

 

8

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
2020ND40ND
2021N/A00N/A
2022N/A00N/A
2023ND10ND

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
2018-05-10CA4810025_004_004-201805101015ND
2018-08-23CA4810025_004_004-201808230920ND
2018-11-15CA4810025_004_004-201811151120ND
2020-03-10CA4810025_003_003-202003101130ND
2020-03-10CA4810025_001_001-202003101005ND
2020-06-22CA4810025_001_001-202006221235ND
2020-06-22CA4810025_003_003-202006221125ND
2023-04-06CA4810025_001_001-202304061045ND