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Monochlorobenzene (chlorobenzene)

Status: National drinking water standard exists

 

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

2015:

FOUND
FOUND ABOVE HEALTH GUIDELINES

9

states detected

13

utilities detected

111,000

people served

0

states over health guideline

0

utilities over health guideline

0

people served over health guideline

Health concerns for monochlorobenzene

Harm to the liver

Harm to the kidney

State and national drinking water standards and health guidelines

Health Guideline 70 ppb

The health guideline of 70 ppb for monochlorobenzene 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)100 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

States reporting monochlorobenzene in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
New Jersey249,385
Florida432,975
Kentucky120,048
Georgia13,728
North Carolina12,881
Arizona1805
Louisiana1684
Maryland160
Wisconsin147
MORE
LESS

Utilities with the highest amounts of monochlorobenzene, 2015

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
HogansvilleHogansville, GA1 of 139.0 ppb3,728
Elfrida Water Improvement DistrictElfrida, AZ1 of 21.20 ppb805
Mayo Center and ApartmentsAnnapolis, MD1 of 10.800 ppb60
Riviera Beach Utility District*Riviera Beach, FL5 of 160.787 ppb31,500
Fairmont, Town ofFairmont, NC1 of 40.525 ppb2,881
Venice Ranch Mobile Home EstatesVenice, FL1 of 10.360 ppb295
Reflections VillageRichfield, WI1 of 40.300 ppb47
Bullock Pen Water DistrictCrittenden, KY1 of 40.150 ppb20,048
City of Broussard Highway 90 Water SystemBroussard, LA2 of 40.140 ppb684
Woodbine Municipal Utilities AuthorityWoodbine, NJ1 of 10.0700 ppb2,800
United Water CamdenCamden, NJ1 of 70.00857 ppb46,585

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Monochlorobenzene (chlorobenzene), but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Riviera Beach Utility District*Riviera Beach, FL5 of 160.787 ppb31,500
Bullock Pen Water DistrictCrittenden, KY1 of 40.150 ppb20,048
United Water CamdenCamden, NJ1 of 70.00857 ppb46,585

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Monochlorobenzene (chlorobenzene), but it likely has the contaminant in its water supply.