Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

New Iberia Water System (lAWCO)

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND140ND
2019ND20ND
2020N/A00N/A
2021ND70ND
2022ND10ND
2023N/A00N/A

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
2018-06-2635401101002ND
2018-06-2635401101001ND
2018-06-2635401101001ND
2018-06-2635401101002ND
2018-10-0235422173001ND
2018-10-0235422173005ND
2018-10-0235422173004ND
2018-10-0235422173003ND
2018-10-0235422173002ND
2018-10-0235422173001ND
2018-10-0235422173005ND
2018-10-0235422173004ND
2018-10-0235422173003ND
2018-10-0235422173002ND
2019-01-2835445032001ND
2019-01-2835445032001ND
2021-05-0335630992002ND
2021-07-2035649661001ND
2021-07-2035649661002ND
2021-07-2035649661003ND
2021-07-2035649661004ND
2021-07-2035649661005ND
2021-10-1835672238004ND
2022-02-1535697808005ND