Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Washington Ridge C.c.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND10ND
2021N/A00N/A
2022ND30ND
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
2018-03-21CA2910013_005_005-201803210800ND
2018-06-06CA2910013_005_005-201806061000ND
2018-11-27CA2910013_005_005-201811271000ND
2019-03-27CA2910013_005_005-201903270900ND
2019-03-27CA2910013_002_002-201903270830ND
2019-03-27CA2910013_003_003-201903270845ND
2020-06-16CA2910013_005_005-202006161330ND
2022-03-08CA2910013_002_002-202203081033ND
2022-03-08CA2910013_005_005-202203081138ND
2022-03-08CA2910013_003_003-202203081111ND