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CONTAMINANT

Monochlorobenzene (chlorobenzene)

STATES DETECTED

14

serves

390,000

utilities detected

49

states detected

0

serves

0

utilities detected

0

Overview

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.

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 70 ppb

The EWG 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.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

National Standard Exists

Health Concerns:

  • Harm to the liver

  • Harm to the kidney

Want to remove
Monochlorobenzene (chlorobenzene) from your water?

Try these filter technologies:

Activated Carbon, 

Reverse Osmosis, 

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Monochlorobenzene (chlorobenzene) around the Country

UTILITIES WITH CONTAMINATION
State Utilities People Served
South Carolina15267,614
Massachusetts244,045
Florida935,921
California210,734
Tennessee29,150
New York76,032
Indiana14,064
New Jersey14,012
North Carolina33,817
Pennsylvania21,811
Illinois11,200
Wisconsin11,069
New Mexico1355
Maryland2145

Utilities with the highest amounts of monochlorobenzene, 2021-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Mayo Center and ApartmentsAnnapolis, MD1 of 22.34 ppb60
Dickeyville WaterworksDickeyville, WI1 of 31.40 ppb1,069
Harmony VillageMarysville, CA3 of 51.14 ppb25
Clarendon Co. W&s Hwy 260 (sc1450013)Manning, SC1 of 10.630 ppb927
Maysville, Town ofSumter, SC1 of 10.610 ppb983
Pine Knoll ParkArkport, NY1 of 10.510 ppb40
Hialeah GardensHialeah Gardens, FL1 of 10.500 ppb22,200
Soundings Yacht & Tennis ClubHobe Sound, FL1 of 10.500 ppb450
Villa MargaretOkeechobee, FL1 of 10.500 ppb132
Pine Tree Mobile Home ParkStamford, NY1 of 10.500 ppb44
Hillcrest Estates, Inc.Zephyrhills, FL1 of 10.360 ppb130
Placitas Trails Water Co-opAlbuquerque, NM1 of 20.350 ppb355
Lucama, Town ofLucama, NC1 of 40.350 ppb881
Aqua Illinois-skyline (northern)Kankakee, IL1 of 60.333 ppb1,200
Ham's Mobile Home Park No. 2Belmont, NC1 of 30.300 ppb99
Oak Park Trailer Court LLCTitusville, FL1 of 10.260 ppb90
Perry Village*Perry, NY1 of 20.250 ppb4,348
Silver Lake Institute - Castile Water District #1Castile, NY1 of 20.250 ppb440
Perry Center Water DistrictPerry, NY1 of 20.250 ppb150
Gardeau Water DistrictSilver Springs, NY1 of 20.250 ppb60
Westminster Department Of Public Works*Westminster, MA1 of 70.243 ppb3,500
Fitchburg Dpw, Div. of Water Supply*Fitchburg, MA1 of 70.243 ppb40,545
Boh-nak Mobile Home ParkFruitland, MD1 of 100.178 ppb85
Beth Shady Lane SystemBethlehem, PA1 of 60.133 ppb61
Loris, City ofLoris, SC1 of 40.133 ppb3,613
Tabor City, Town of*Tabor City, NC1 of 40.133 ppb3,277
Gcwsd Garden City Point (sc2220011)Pawleys Island, SC1 of 40.133 ppb1,868
City of ConwayConway, SC1 of 40.133 ppb23,595
Conway RuralConway, SC1 of 40.133 ppb10,823
Grand Strand Water and Sewer Authority*Conway, SC1 of 40.133 ppb172,016
Ocean Lakes LtdMyrtle Beach, SC1 of 40.133 ppb6,243
Angelica Village Public WaterAngelica, NY1 of 40.125 ppb950
21 Palms Rv ResortDavenport, FL1 of 10.120 ppb200
Bgwc Oakland Plantation (sc4350006)Greenville, SC4 of 250.117 ppb1,180
Cypress Pointe Condos (sc1470304)Manning, SC2 of 120.117 ppb154
Bgwc Pocalla Development (sc4350007)Greenville, SC2 of 120.101 ppb327
Town Of AstatulaAstatula, FL1 of 50.1000 ppb1,937
Cumberland City Water DepartmentCumberland City, TN1 of 80.0866 ppb1,162
Erin Water Department*Erin, TN1 of 80.0866 ppb7,988
Bucksport Water CompanyConway, SC2 of 130.0862 ppb15,297
Bicknell Municipal Utilities*Freelandville, IN1 of 100.0830 ppb4,064
Cassatt Water Kershaw-lee Company RWACassatt, SC2 of 150.0767 ppb25,061
Shaw Air Force BaseShaw Afb, SC2 of 160.0728 ppb2,250
Fairmont, Town ofFairmont, NC2 of 170.0691 ppb2,837
Sunrise SouthwestFort Lauderdale, FL1 of 40.0650 ppb10,750
Scotts Valley Water DistrictScotts Valley, CA3 of 430.0647 ppb10,709
East Berlin Area Joint AuthorityEast Berlin, PA1 of 150.0467 ppb1,750
Lake Marian ResortKenansville, FL1 of 110.0455 ppb32
Mountain Lakes Water DepartmentRiverdale, NJ1 of 480.0163 ppb4,012

* 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
Hialeah GardensHialeah Gardens, FL1 of 10.500 ppb22,200
Fitchburg Dpw, Div. of Water Supply*Fitchburg, MA1 of 70.243 ppb40,545
City of ConwayConway, SC1 of 40.133 ppb23,595
Conway RuralConway, SC1 of 40.133 ppb10,823
Grand Strand Water and Sewer Authority*Conway, SC1 of 40.133 ppb172,016
Bucksport Water CompanyConway, SC2 of 130.0862 ppb15,297
Cassatt Water Kershaw-lee Company RWACassatt, SC2 of 150.0767 ppb25,061
Sunrise SouthwestFort Lauderdale, FL1 of 40.0650 ppb10,750
Scotts Valley Water DistrictScotts Valley, CA3 of 430.0647 ppb10,709

* 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.

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