Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Erie City 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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND40ND
2021N/A00N/A
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
2018-01-083849221ND
2018-05-213941481ND
2018-08-214030518ND
2019-05-214302825ND
2019-09-104415509ND
2019-11-184489105ND
2020-04-0122141736.00ND
2020-05-1822336512.00ND
2020-08-2622923680.00ND
2020-09-2323112751.00ND
2023-04-0428826547.00ND
2023-04-1828826414.00ND
2023-08-0929625450.00ND
2023-09-1429816667.00ND