Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Patton Village West Water System

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND60ND
2021ND30ND
2022ND20ND
2023ND50ND

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
2018-09-19AE40833ND
2020-07-30AF21465ND
2020-07-30AF21466ND
2020-07-30AF21467ND
2020-10-05AF29537ND
2020-10-05AF29538ND
2020-10-05AF29545ND
2021-01-12AF38918ND
2021-01-12AF38915ND
2021-05-07AF53064ND
2022-08-10AG08658ND
2022-10-18AG17503ND
2023-01-10AG23826ND
2023-04-03AG35210ND
2023-05-10AG40085ND
2023-07-14AG48861ND
2023-10-26AG61334ND