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EWG's Tap Water Database — 2019 UPDATE

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Bromochloromethane

Status: No national drinking water standard exists

 

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

2012-2017:

FOUND

41

states detected

736

utilities detected

32 million

people served

Health concerns for bromochloromethane

Cancer

States reporting bromochloromethane in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
California10414,118,722
Texas2388,285,168
Arizona121,460,619
New Jersey151,187,096
Pennsylvania271,068,905
Oklahoma39841,497
Florida20802,723
Alabama13478,104
New York32426,144
Nebraska6305,263
Massachusetts13294,776
Nevada3293,080
Illinois17263,629
North Carolina12243,633
Kentucky5227,981
Idaho2179,857
Iowa8178,758
Mississippi8165,255
Ohio46161,241
Wisconsin15160,482
Louisiana18158,137
Kansas10157,985
West Virginia16144,988
South Carolina594,219
Georgia1078,484
Virginia771,585
Colorado869,388
Utah465,300
Oregon144,192
Missouri332,030
Hawaii131,337
New Mexico219,050
Michigan117,593
District Of Columbia115,690
Indiana212,757
Washington16,322
Arkansas55,139
Connecticut15,030
South Dakota1581
Delaware1480
New Hampshire2383
Montana173
MORE
LESS

Filtering technologies that reduce bromochloromethane

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of bromochloromethane, 2012-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
HogansvilleHogansville, GA8 of 811.7 ppb3,866
Roanoke (the Util. Bd. of The, City of)Roanoke, AL1 of 111.0 ppb7,380
Switzerland of Ohio WaterJerusalem, OH1 of 19.48 ppb2,500
Niagara Falls Water BoardNiagara Falls, NY1 of 19.40 ppb50,193
The Reserve At Snows BrookAtkinson, NH1 of 45.68 ppb13
Triform Camphill CommunityHudson, NY1 of 15.30 ppb63
Julian Community Services DistrictJulian, CA1 of 14.20 ppb1,105
Hudson CityHudson, NY2 of 72.49 ppb7,500
Hartland ColonyHavre, MT1 of 12.40 ppb73
Barrow County Water System*Winder, GA1 of 52.00 ppb14,043
Coxsackie Consolidated Water DistrictCoxsackie, NY1 of 11.50 ppb376
Coxsackie Village*Coxsackie, NY1 of 11.50 ppb4,539
Quimby Water SupplyQuimby, IA1 of 11.50 ppb319
New Baltimore Water District #2Hannacroix, NY1 of 11.50 ppb63
Southbridge Water DepartmentSouthbridge, MA1 of 31.47 ppb15,453
Kenmore VillageKenmore, NY1 of 61.38 ppb15,423
Town of Tonawanda Water Department*Tonawanda, NY1 of 61.38 ppb78,423
Cal American Water Company - Las Posas EstatesNewbury Park, CA11 of 251.33 ppb1,800
Solano Verde Mutual Water CompanyCamarillo, CA11 of 251.33 ppb100
Ventura County Waterworks District No. 17 - Bell CanyonMoorpark, CA11 of 251.33 ppb2,049
California Water Service Company - WestlakeSan Jose, CA11 of 251.33 ppb19,451
Thousand Oaks Water DepartmentThousand Oaks, CA11 of 251.33 ppb50,000
Cal American Water CompanyNewbury Park, CA11 of 251.33 ppb61,206
Oak Park Water ServiceVentura, CA11 of 251.33 ppb12,200
Calleguas Municipal Water District*Thousand Oaks, CA11 of 251.33 ppb0
Lake Sherwood Community Services DistrictMoorpark, CA11 of 251.33 ppb1,527
Galveston County WCID 1Dickinson, TX7 of 121.24 ppb29,280
Warnerville Water District # 1Warnerville, NY1 of 31.13 ppb1,300
Cobleskill Water DistrictCobleskill, NY1 of 31.13 ppb500
Cobleskill Village*Cobleskill, NY1 of 31.13 ppb6,283
Mountainview Mobile Home ParkOwego, NY1 of 11.10 ppb250
Urban Bluffs - NorthAvoca, IA3 of 30.933 ppb1,435
Newark Valley Mobilehome Court(brooksideNewark Valley, NY1 of 10.900 ppb80
Town of QuintanaQuintana, TX1 of 30.867 ppb210
Huttig WaterworksHuttig, AR1 of 40.770 ppb777
Deer MeadowsNewark, DE1 of 50.740 ppb480
Green Mountain Water CompanyMorgan Hill, CA1 of 20.700 ppb180
Attleboro Water DepartmentAttleboro, MA1 of 90.700 ppb43,593
Trinity Rural Water Supply Corporation 3*Trinity, TX1 of 30.627 ppb1,219
Harbor PointPflugerville, TX1 of 30.627 ppb802
Williams Water SupplyWilliams, IA2 of 20.600 ppb353
Atlantic City Municipal Utilities AuthorityAtlantic City, NJ1 of 180.513 ppb152,415
Council Bluffs Water Works*Council Bluffs, IA1 of 10.500 ppb63,795
Crescent Water SupplyOmaha, IA1 of 10.500 ppb617
Matagorda Dunes SubdivisionAustin, TX1 of 40.475 ppb426
City of MilesMiles, TX2 of 70.414 ppb870
Maverick County Airport Water WorksEagle Pass, TX1 of 30.367 ppb1,645
City of GrovetonGroveton, TX2 of 50.356 ppb1,057
Sparta Township Water Utility -- Highlands*Sparta, NJ1 of 60.350 ppb1,618
ShellmanShellman, GA1 of 20.325 ppb1,092

* 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 Bromochloromethane, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Niagara Falls Water BoardNiagara Falls, NY1 of 19.40 ppb50,193
Barrow County Water System*Winder, GA1 of 52.00 ppb14,043
Southbridge Water DepartmentSouthbridge, MA1 of 31.47 ppb15,453
Town of Tonawanda Water Department*Tonawanda, NY1 of 61.38 ppb78,423
Kenmore VillageKenmore, NY1 of 61.38 ppb15,423
California Water Service Company - WestlakeSan Jose, CA11 of 251.33 ppb19,451
Thousand Oaks Water DepartmentThousand Oaks, CA11 of 251.33 ppb50,000
Cal American Water CompanyNewbury Park, CA11 of 251.33 ppb61,206
Oak Park Water ServiceVentura, CA11 of 251.33 ppb12,200
Galveston County WCID 1Dickinson, TX7 of 121.24 ppb29,280
Attleboro Water DepartmentAttleboro, MA1 of 90.700 ppb43,593
Atlantic City Municipal Utilities AuthorityAtlantic City, NJ1 of 180.513 ppb152,415
Council Bluffs Water Works*Council Bluffs, IA1 of 10.500 ppb63,795
West Palm Beach Water Treatment Plant*West Palm Beach, FL3 of 30.303 ppb102,000
Ramona Municipal WDRamona, CA1 of 10.250 ppb40,000
City of CorinthCorinth, TX3 of 40.219 ppb23,568
Webster Water DepartmentWebster, MA1 of 80.206 ppb16,767
City of Denison*Denison, TX1 of 70.194 ppb22,682
Town of Little Elm*Little Elm, TX1 of 10.149 ppb31,355
City of Kingsville*Kingsville, TX3 of 270.146 ppb32,736
Wellborn SUDWellborn, TX1 of 160.138 ppb19,068
Naval Base Ventura County, Port HuenemePoint Mugu, CA3 of 80.124 ppb11,500
Lake Cities Municipal Utility AuthorityLake Dallas, TX2 of 50.123 ppb15,000
Orleans Water DepartmentOrleans, MA1 of 260.119 ppb17,670
City of PittsburgPittsburg, CA3 of 30.113 ppb62,500
US Army Aviation and Missile CommandRedstone Arsenal, AL1 of 140.109 ppb28,500
City of CrowleyCrowley, TX2 of 160.108 ppb14,800
City of LincolnLincoln, NE12 of 780.107 ppb277,348
City of Mesa*Mesa, AZ1 of 10.0940 ppb466,000
Lakeside WD*Lakeside, CA1 of 90.0833 ppb42,200
City of Galveston*Galveston, TX2 of 40.0830 ppb50,180
Pennsylvania American Norristown*Norristown, PA1 of 20.0750 ppb96,376
Rainbow Municipal WDFallbrook, CA1 of 120.0725 ppb19,611
Rincon Del Diablo MWD(ID-1)Escondido, CA1 of 120.0725 ppb24,545
Vallecitos Water DistrictSan Marcos, CA1 of 120.0725 ppb94,871
City of CarlsbadCarlsbad, CA1 of 120.0725 ppb84,838
Valley Center MWD*Valley Center, CA1 of 120.0725 ppb25,450
Red Bank Water DepartmentRed Bank, NJ2 of 80.0688 ppb12,520
City of Taylor*Taylor, TX3 of 30.0669 ppb18,258
City of Plano*Plano, TX1 of 10.0600 ppb277,720
Pennsylvania American Water Company Clarion*Butler, PA1 of 30.0500 ppb16,600
Rockett SUD*Red Oak, TX3 of 80.0479 ppb37,038
City of Granbury*Granbury, TX3 of 420.0464 ppb11,193
North Shelby Water DistrictBagdad, KY4 of 160.0456 ppb14,660
City of PeoriaPeoria, AZ6 of 280.0428 ppb135,975
City of GarlandGarland, TX1 of 30.0427 ppb236,786
GrayslakeGrayslake, IL2 of 40.0418 ppb20,330
Grover Beach Water DepartmentGrover Beach, CA1 of 80.0400 ppb13,156
German Township Water District Inc.*Evansville, IN1 of 20.0390 ppb12,058
Elsinore Valley Municipal Water District*Lake Elsinore, CA1 of 200.0390 ppb142,264

* 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 Bromochloromethane, but it likely has the contaminant in its water supply.