Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Ephrata Area Joint Authority

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.

 

17

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
2019N/A00N/A
2020ND80ND
2021N/A00N/A
2022ND10ND
2023ND80ND

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
2020-04-0622168927.00ND
2020-04-1322169110.00ND
2020-04-1322169109.00ND
2020-04-1622365709.00ND
2020-07-1322754040.00ND
2020-07-1322754039.00ND
2020-07-1422754084.00ND
2020-07-1722952585.00ND
2022-04-1226604804.00ND
2023-04-1429056973.00ND
2023-04-1429056974.00ND
2023-04-1429057139.00ND
2023-04-1429056972.00ND
2023-07-1129654739.00ND
2023-07-1829654906.00ND
2023-08-0929844099.00ND
2023-08-2929844138.00ND