Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Myrtle Springs Water Supply Corporation

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
2018ND30ND
2019N/A00N/A
2020ND40ND
2021ND30ND
2022N/A00N/A
2023ND30ND

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
2018-06-28Q1825924008ND
2018-06-28Q1825924009ND
2018-06-28Q1825924010ND
2020-03-23Q2012172004ND
2020-05-21Q2020401005ND
2020-08-12Q2032124022ND
2020-11-20Q2046941004ND
2021-06-29Q2116915018ND
2021-06-29Q2116915019ND
2021-06-29Q2116915023ND
2023-04-19Q2314546016ND
2023-09-06Q2338438005ND
2023-12-06Q2352167003ND