Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Paw Penn District

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND20ND
2020ND150ND
2021N/A00N/A
2022N/A00N/A
2023ND140ND

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
2019-07-1545716201ND
2019-10-3143999701ND
2020-04-0622069253.00ND
2020-04-0622069224.00ND
2020-04-0822069384.00ND
2020-04-0822069442.00ND
2020-04-1422069355.00ND
2020-04-1622069471.00ND
2020-04-1622069413.00ND
2020-05-0622261481.00ND
2020-07-0122652305.00ND
2020-07-0122652276.00ND
2020-07-0122652392.00ND
2020-07-0922652218.00ND
2020-07-0922652247.00ND
2020-07-0922652334.00ND
2020-07-1322652363.00ND
2023-04-0628749312.00ND
2023-04-0628749454.00ND
2023-04-0628749443.00ND
2023-04-1328749399.00ND
2023-04-1328749370.00ND
2023-04-1328749341.00ND
2023-06-0729155720.00ND
2023-07-1329346819.00ND
2023-07-1329346871.00ND
2023-07-1329346790.00ND
2023-07-1329346881.00ND
2023-07-2029346761.00ND
2023-07-2029346732.00ND
2023-07-2029346703.00ND