Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

North Penn 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.

 

30

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
2020ND220ND
2021N/A00N/A
2022N/A00N/A
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
2020-04-0122022948.00ND
2020-04-0122023068.00ND
2020-04-0122023038.00ND
2020-04-0122022978.00ND
2020-04-0122023008.00ND
2020-04-0122023146.00ND
2020-04-1322023360.00ND
2020-04-1322023330.00ND
2020-04-1322023300.00ND
2020-04-1322023270.00ND
2020-05-0422215402.00ND
2020-07-0622607344.00ND
2020-07-0622607374.00ND
2020-07-0622607404.00ND
2020-07-0622607314.00ND
2020-07-0622608065.00ND
2020-08-1022799624.00ND
2020-08-1022799594.00ND
2020-08-1022799504.00ND
2020-08-1222799564.00ND
2020-08-1222799534.00ND
2020-08-3122999403.00ND
2023-04-1228702900.00ND
2023-04-1228702898.00ND
2023-04-1228702897.00ND
2023-04-1228702899.00ND
2023-07-1929498067.00ND
2023-07-1929498069.00ND
2023-07-1929498068.00ND
2023-07-1929498066.00ND