Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Amicks Ferry Water System

NOTE: Amicks Ferry Water System purchases water from City of Columbia which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by City of Columbia.

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND20ND

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

NOTE: Amicks Ferry Water System purchases water from City of Columbia which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by City of Columbia.

Date Lab ID Result
2018-03-12AE09073ND
2018-07-16AE15003ND
2019-01-08AE23570ND
2019-07-16AE33661ND
2020-10-14AE55739ND
2020-11-04AE56846ND
2021-10-13AE73342ND
2021-10-20AE73703ND
2022-09-08810-36781-1ND
2023-09-06AF08032ND
2023-09-21AF08856ND