Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

City of Idalou

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND10ND
2022ND10ND
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
2018-10-25Q1842795001ND
2019-04-10Q1914418011ND
2020-03-11Q2010310014ND
2020-03-11Q2010310015ND
2020-06-09Q2023125011ND
2020-08-12Q2032147007ND
2021-02-23Q2104560005ND
2022-02-16Q2205704009ND
2023-02-15Q2306278003ND
2023-02-15Q2306278010ND
2023-04-25Q2315530004ND
2023-07-26Q2329823010ND