Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Pennsylvania American Royersford

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.

 

21

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
2020ND110ND
2021N/A00N/A
2022N/A00N/A
2023ND100ND

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
2020-04-0822016234.00ND
2020-04-0822016118.00ND
2020-04-1522016319.00ND
2020-04-1522016291.00ND
2020-04-1522016263.00ND
2020-07-0722601608.00ND
2020-08-0422792312.00ND
2020-08-0522792297.00ND
2020-08-1122792241.00ND
2020-08-1122792269.00ND
2020-08-1822792682.00ND
2023-05-0128893353.00ND
2023-05-0128893381.00ND
2023-05-0128893314.00ND
2023-05-1128893325.00ND
2023-05-1128893409.00ND
2023-07-0629296031.00ND
2023-08-1029491108.00ND
2023-08-1029491075.00ND
2023-08-1029491129.00ND
2023-08-1029491042.00ND