Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Coast Springs - Cal. Water Service (puc)

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.

 

11

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
2019N/A00N/A
2020ND90ND
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
2020-08-04CA2110007_006_006-202008041237ND
2020-08-04CA2110007_008_008-202008041147ND
2020-08-04CA2110007_010_010-202008041037ND
2020-08-04CA2110007_005_005-202008041335ND
2020-08-04CA2110007_016_016-202008041350ND
2020-08-27CA2110007_004_004-202008270945ND
2020-08-27CA2110007_002_002-202008271010ND
2020-08-27CA2110007_007_007-202008270927ND
2020-08-27CA2110007_003_003-202008271005ND
2023-08-29CA2110007_016_016-202308291235ND
2023-08-30CA2110007_002_002-202308300830ND