Contaminant Level (MCL)
DBCP (1,2-dibromo-3-chloropropane) is a soil fumigant used to control nematodes in a wide range of plant and vegetable crops. According to the EPA, it's used to treat soil for “cucumbers, summer squash, cabbage, cauliflower, carrots, snap beans, okra, aster, shasta daisy, lawn grasses and ornamental shrubs” and it arrives in drinking water as runoff from “soybeans, cotton, pineapples and orchards.”
DBCP is a carcinogen that can lead to reproductive problems. According to the EPA:
Some people who drink water containing 1,2-dibromo-3-chloropropane in excess of the MCL over many years could experience reproductive difficulties, and may have an increased risk of getting cancer.
The EPA recommends granular activated carbon (GAC) and packed tower aeration (an air stripping method) for the treatment of DBCP. According to Lenntech, activated carbon has a “high probability” of adsorbing DBCP.
(whole house & well units)