Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Duncannon Municipal Water

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND40ND
2021ND40ND
2022N/A00N/A
2023ND40ND

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
2018-11-138034793-01ND
2020-05-1122380587.00ND
2020-05-1822380571.00ND
2020-05-2622576483.00ND
2020-06-0122576512.00ND
2021-02-1524214616.00ND
2021-05-1124798805.00ND
2021-08-2425374690.00ND
2021-12-2825914343.00ND
2023-06-0629271850.00ND
2023-06-0629668365.00ND
2023-06-2729271871.00ND
2023-06-2729271877.00ND