EPA Designation Regulated
EPA Classification Organic Chemicals
EPA Levels 1,2 0.075 MCLG (mg/L)
0.075 MCLG (mg/L)
Alternative Names none
Sources Discharge from industrial chemical factories
p-Dichlorobenzene is a carcinogenic pesticide used as a fumigant, deodorant, and in manufacture of other industrial chemicals.


para-Dichlorobenzene is an organic solid of white crystals with a mothball-like odor.


p-Dichlorobenzene is used mainly as an insecticidal fumigant against clothes moths and as a deodorant for garbage and restrooms. It is also used as an insecticide and fungicide on crops, and in the manufacture of other organic chemicals and in plastics, dyes, and pharmaceuticals.

Health Effects

Some people who drink water containing p-dichlorobenzene well in excess of the maximum contaminant level (MCL) for many years could experience anemia; damage to their liver, kidneys or spleen; or changes in their blood.

EPA Data Source: p-Dichlorobenzene

EPA Definitions:

1Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are non-enforceable public health goals.

Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards.

Maximum Residual Disinfectant Level Goal (MRDLG) - The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

(TT) Treatment Technique - A required process intended to reduce the level of a contaminant in drinking water.

Maximum Residual Disinfectant Level (MRDL) - The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

2 Units are in milligrams per liter (mg/L) unless otherwise noted. Milligrams per liter are equivalent to parts per million.