Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Northfield

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND70ND
2020ND50ND
2021ND50ND
2022ND40ND
2023ND40ND

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
2018-10-2218J1084-01ND
2019-01-1819A0676-01ND
2019-01-1819A0676-02ND
2019-01-1819A0676-03ND
2019-06-2019F1478-01ND
2019-06-2019F1478-02ND
2019-06-2019F1478-03ND
2019-07-2519G1899-01ND
2020-07-0820G0398-01ND
2020-10-2720J1404-01ND
2020-10-2720J1405-02ND
2020-10-2720J1405-03ND
2020-10-2720J1405-04ND
2021-02-2521B1431-01ND
2021-02-2521B1431-04ND
2021-02-2521B1431-03ND
2021-02-2521B1431-02ND
2021-05-1121E0572-01ND
2022-02-0822B0561-01ND
2022-02-0822B0561-02ND
2022-05-0522E0381-01ND
2022-05-0522E0381-02ND
2023-05-0923E0759-02ND
2023-05-0923E0759-04ND
2023-08-0723H0555-01ND
2023-08-0723H0555-02ND