Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

City of Pocatello

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND160ND
2020ND170ND
2021N/A00N/A
2022N/A00N/A
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
2018-05-02SI80502301ND
2019-10-08SI91008801ND
2019-10-08SI91009208ND
2019-10-08SI91009207ND
2019-10-08SI91009206ND
2019-10-08SI91009205ND
2019-10-08SI91009204ND
2019-10-08SI91009203ND
2019-10-08SI91009202ND
2019-10-08SI91009201ND
2019-10-08SI91008808ND
2019-10-08SI91008807ND
2019-10-08SI91008806ND
2019-10-08SI91008805ND
2019-10-08SI91008804ND
2019-10-08SI91008803ND
2019-10-08SI91008802ND
2020-05-11SI00507316ND
2020-05-11SI00507315ND
2020-05-11SI00507314ND
2020-05-11SI00507313ND
2020-05-11SI00507312ND
2020-05-11SI00507311ND
2020-05-11SI00507310ND
2020-05-11SI00507309ND
2020-05-11SI00507308ND
2020-05-11SI00507307ND
2020-05-11SI00507306ND
2020-05-11SI00507305ND
2020-05-11SI00507304ND
2020-05-11SI00507303ND
2020-05-11SI00507302ND
2020-05-11SI00507301ND
2020-06-09SI00614401ND