Contaminant Level (MCL)
Ethylbenzene is an organic compound used primarily in the production of styrene, a chemical compound used in plastics manufacturing. It's also used in paints, insecticides, gasoline blends and other industrial capacities.
Ethylbenzene ends up in drinking water primarily through discharge from factories.
Acute exposure, according to the EPA, can lead to symptoms of “drowsiness, fatigue, headache and mild eye and respiratory irritation.” The agency also warns of long term effects on the liver and kidneys:
Some people who drink water containing ethylbenzene well in excess of the maximum contaminant level [0.7 milligrams per Liter ] for many years could experience problems with their liver or kidneys.
The EPA recommends granular activated carbon (GAC) for the treatment of ethylbenzene.
(whole house & well units)