Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Newellton 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-01-0835367824001ND
2018-01-0835367824001ND
2018-07-3035407879001ND
2018-07-3035407879001ND
2019-01-1435442603002ND
2019-01-1435442603002ND
2019-07-3135486738001ND
2019-07-3135486738001ND
2020-01-0635523110001ND
2020-08-1235570543002ND
2021-01-1835605842002ND
2021-09-1535664395001ND
2022-01-1835692112002ND
2022-08-1535741176002ND
2023-02-0635778177003ND
2023-07-1835814094001ND