Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

South Middleton Twp Water 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.

 

12

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
2020ND60ND
2021N/A00N/A
2022N/A00N/A
2023ND60ND

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
2020-05-1422355275.00ND
2020-05-1422355304.00ND
2020-05-1422355333.00ND
2020-08-1322942251.00ND
2020-08-1322942278.00ND
2020-08-1322942308.00ND
2023-05-2529247699.00ND
2023-05-2529247700.00ND
2023-05-2529247701.00ND
2023-08-1529644786.00ND
2023-08-1529644784.00ND
2023-08-1529644785.00ND