Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Valley Utilities Water Company Glendale

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019N/A00N/A
2020N/A00N/A
2021ND80ND
2022ND40ND
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
2018-03-01201803010291SAND
2018-03-01201803010291SBND
2018-03-07201803070712SBND
2018-03-07201803070712SAND
2018-07-19201807190554SAND
2018-07-19201807190554SBND
2018-07-19201807190554SCND
2018-07-19201807190554SDND
2021-03-03202103040014SBND
2021-03-03202103040014SCND
2021-03-03202103040014SAND
2021-03-11202103120008SND
2021-04-14202104150273SAND
2021-04-14202104150273SBND
2021-04-14202104150273SCND
2021-04-14202104150273SDND
2022-02-02202202030108SND
2022-04-27202204280128SND
2022-07-07380-7658-1ND
2022-10-05380-23186-1ND