Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Valencia Water Company Town Division

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
2018ND50ND
2019ND30ND
2020ND40ND
2021N/A00N/A
2022N/A00N/A
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

Date Lab ID Result
2018-02-28577634-001ND
2018-02-28577635-001ND
2018-03-01577893-001ND
2018-03-14579056-001ND
2018-04-05581510-001ND
2019-03-1419C1489-01ND
2019-06-0519F0451-01ND
2019-06-0619F0664-01ND
2020-04-1420D1547-01ND
2020-05-1320E1444-01ND
2020-06-2420F2631-01ND
2020-08-1820H2009-01ND
2023-02-0123B0022-01ND
2023-10-2423J3046-01ND