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:
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 | Utilities | People Served | |
California | 104 | 14,118,722 | |
Texas | 238 | 8,285,168 | |
Arizona | 12 | 1,460,619 | |
New Jersey | 15 | 1,187,096 | |
Pennsylvania | 27 | 1,068,905 | |
Oklahoma | 39 | 841,497 | |
Florida | 20 | 802,723 | |
Alabama | 13 | 478,104 | |
New York | 32 | 426,144 | |
Nebraska | 6 | 305,263 | |
Massachusetts | 13 | 294,776 | |
Nevada | 3 | 293,080 | |
Illinois | 17 | 263,629 | |
North Carolina | 12 | 243,633 | |
Kentucky | 5 | 227,981 | |
Idaho | 2 | 179,857 | |
Iowa | 8 | 178,758 | |
Mississippi | 8 | 165,255 | |
Ohio | 46 | 161,241 | |
Wisconsin | 15 | 160,482 | |
Louisiana | 18 | 158,137 | |
Kansas | 10 | 157,985 | |
West Virginia | 16 | 144,988 | |
South Carolina | 5 | 94,219 | |
Georgia | 10 | 78,484 | |
Virginia | 7 | 71,585 | |
Colorado | 8 | 69,388 | |
Utah | 4 | 65,300 | |
Oregon | 1 | 44,192 | |
Missouri | 3 | 32,030 | |
Hawaii | 1 | 31,337 | |
New Mexico | 2 | 19,050 | |
Michigan | 1 | 17,593 | |
District Of Columbia | 1 | 15,690 | |
Indiana | 2 | 12,757 | |
Washington | 1 | 6,322 | |
Arkansas | 5 | 5,139 | |
Connecticut | 1 | 5,030 | |
South Dakota | 1 | 581 | |
Delaware | 1 | 480 | |
New Hampshire | 2 | 383 | |
Montana | 1 | 73 |
Filtering technologies that reduce bromochloromethane

Activated Carbon

Reverse Osmosis
Utilities with the highest amounts of bromochloromethane, 2012-2017
Utility | Location | Tests | Average level | People served |
---|---|---|---|---|
Hogansville | Hogansville, GA | 8 of 8 | 11.7 ppb | 3,866 |
Roanoke (the Util. Bd. of The, City of) | Roanoke, AL | 1 of 1 | 11.0 ppb | 7,380 |
Switzerland of Ohio Water | Jerusalem, OH | 1 of 1 | 9.48 ppb | 2,500 |
Niagara Falls Water Board | Niagara Falls, NY | 1 of 1 | 9.40 ppb | 50,193 |
The Reserve At Snows Brook | Atkinson, NH | 1 of 4 | 5.68 ppb | 13 |
Triform Camphill Community | Hudson, NY | 1 of 1 | 5.30 ppb | 63 |
Julian Community Services District | Julian, CA | 1 of 1 | 4.20 ppb | 1,105 |
Hudson City | Hudson, NY | 2 of 7 | 2.49 ppb | 7,500 |
Hartland Colony | Havre, MT | 1 of 1 | 2.40 ppb | 73 |
Barrow County Water System* | Winder, GA | 1 of 5 | 2.00 ppb | 14,043 |
Coxsackie Consolidated Water District | Coxsackie, NY | 1 of 1 | 1.50 ppb | 376 |
Coxsackie Village* | Coxsackie, NY | 1 of 1 | 1.50 ppb | 4,539 |
Quimby Water Supply | Quimby, IA | 1 of 1 | 1.50 ppb | 319 |
New Baltimore Water District #2 | Hannacroix, NY | 1 of 1 | 1.50 ppb | 63 |
Southbridge Water Department | Southbridge, MA | 1 of 3 | 1.47 ppb | 15,453 |
Kenmore Village | Kenmore, NY | 1 of 6 | 1.38 ppb | 15,423 |
Town of Tonawanda Water Department* | Tonawanda, NY | 1 of 6 | 1.38 ppb | 78,423 |
Cal American Water Company - Las Posas Estates | Newbury Park, CA | 11 of 25 | 1.33 ppb | 1,800 |
Solano Verde Mutual Water Company | Camarillo, CA | 11 of 25 | 1.33 ppb | 100 |
Ventura County Waterworks District No. 17 - Bell Canyon | Moorpark, CA | 11 of 25 | 1.33 ppb | 2,049 |
California Water Service Company - Westlake | San Jose, CA | 11 of 25 | 1.33 ppb | 19,451 |
Thousand Oaks Water Department | Thousand Oaks, CA | 11 of 25 | 1.33 ppb | 50,000 |
Cal American Water Company | Newbury Park, CA | 11 of 25 | 1.33 ppb | 61,206 |
Oak Park Water Service | Ventura, CA | 11 of 25 | 1.33 ppb | 12,200 |
Calleguas Municipal Water District* | Thousand Oaks, CA | 11 of 25 | 1.33 ppb | 0 |
Lake Sherwood Community Services District | Moorpark, CA | 11 of 25 | 1.33 ppb | 1,527 |
Galveston County WCID 1 | Dickinson, TX | 7 of 12 | 1.24 ppb | 29,280 |
Warnerville Water District # 1 | Warnerville, NY | 1 of 3 | 1.13 ppb | 1,300 |
Cobleskill Water District | Cobleskill, NY | 1 of 3 | 1.13 ppb | 500 |
Cobleskill Village* | Cobleskill, NY | 1 of 3 | 1.13 ppb | 6,283 |
Mountainview Mobile Home Park | Owego, NY | 1 of 1 | 1.10 ppb | 250 |
Urban Bluffs - North | Avoca, IA | 3 of 3 | 0.933 ppb | 1,435 |
Newark Valley Mobilehome Court(brookside | Newark Valley, NY | 1 of 1 | 0.900 ppb | 80 |
Town of Quintana | Quintana, TX | 1 of 3 | 0.867 ppb | 210 |
Huttig Waterworks | Huttig, AR | 1 of 4 | 0.770 ppb | 777 |
Deer Meadows | Newark, DE | 1 of 5 | 0.740 ppb | 480 |
Green Mountain Water Company | Morgan Hill, CA | 1 of 2 | 0.700 ppb | 180 |
Attleboro Water Department | Attleboro, MA | 1 of 9 | 0.700 ppb | 43,593 |
Trinity Rural Water Supply Corporation 3* | Trinity, TX | 1 of 3 | 0.627 ppb | 1,219 |
Harbor Point | Pflugerville, TX | 1 of 3 | 0.627 ppb | 802 |
Williams Water Supply | Williams, IA | 2 of 2 | 0.600 ppb | 353 |
Atlantic City Municipal Utilities Authority | Atlantic City, NJ | 1 of 18 | 0.513 ppb | 152,415 |
Council Bluffs Water Works* | Council Bluffs, IA | 1 of 1 | 0.500 ppb | 63,795 |
Crescent Water Supply | Omaha, IA | 1 of 1 | 0.500 ppb | 617 |
Matagorda Dunes Subdivision | Austin, TX | 1 of 4 | 0.475 ppb | 426 |
City of Miles | Miles, TX | 2 of 7 | 0.414 ppb | 870 |
Maverick County Airport Water Works | Eagle Pass, TX | 1 of 3 | 0.367 ppb | 1,645 |
City of Groveton | Groveton, TX | 2 of 5 | 0.356 ppb | 1,057 |
Sparta Township Water Utility -- Highlands* | Sparta, NJ | 1 of 6 | 0.350 ppb | 1,618 |
Shellman | Shellman, GA | 1 of 2 | 0.325 ppb | 1,092 |
* 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.
Utility | Location | Tests | Average level | People served |
---|---|---|---|---|
Niagara Falls Water Board | Niagara Falls, NY | 1 of 1 | 9.40 ppb | 50,193 |
Barrow County Water System* | Winder, GA | 1 of 5 | 2.00 ppb | 14,043 |
Southbridge Water Department | Southbridge, MA | 1 of 3 | 1.47 ppb | 15,453 |
Town of Tonawanda Water Department* | Tonawanda, NY | 1 of 6 | 1.38 ppb | 78,423 |
Kenmore Village | Kenmore, NY | 1 of 6 | 1.38 ppb | 15,423 |
California Water Service Company - Westlake | San Jose, CA | 11 of 25 | 1.33 ppb | 19,451 |
Thousand Oaks Water Department | Thousand Oaks, CA | 11 of 25 | 1.33 ppb | 50,000 |
Cal American Water Company | Newbury Park, CA | 11 of 25 | 1.33 ppb | 61,206 |
Oak Park Water Service | Ventura, CA | 11 of 25 | 1.33 ppb | 12,200 |
Galveston County WCID 1 | Dickinson, TX | 7 of 12 | 1.24 ppb | 29,280 |
Attleboro Water Department | Attleboro, MA | 1 of 9 | 0.700 ppb | 43,593 |
Atlantic City Municipal Utilities Authority | Atlantic City, NJ | 1 of 18 | 0.513 ppb | 152,415 |
Council Bluffs Water Works* | Council Bluffs, IA | 1 of 1 | 0.500 ppb | 63,795 |
West Palm Beach Water Treatment Plant* | West Palm Beach, FL | 3 of 3 | 0.303 ppb | 102,000 |
Ramona Municipal WD | Ramona, CA | 1 of 1 | 0.250 ppb | 40,000 |
City of Corinth | Corinth, TX | 3 of 4 | 0.219 ppb | 23,568 |
Webster Water Department | Webster, MA | 1 of 8 | 0.206 ppb | 16,767 |
City of Denison* | Denison, TX | 1 of 7 | 0.194 ppb | 22,682 |
Town of Little Elm* | Little Elm, TX | 1 of 1 | 0.149 ppb | 31,355 |
City of Kingsville* | Kingsville, TX | 3 of 27 | 0.146 ppb | 32,736 |
Wellborn SUD | Wellborn, TX | 1 of 16 | 0.138 ppb | 19,068 |
Naval Base Ventura County, Port Hueneme | Point Mugu, CA | 3 of 8 | 0.124 ppb | 11,500 |
Lake Cities Municipal Utility Authority | Lake Dallas, TX | 2 of 5 | 0.123 ppb | 15,000 |
Orleans Water Department | Orleans, MA | 1 of 26 | 0.119 ppb | 17,670 |
City of Pittsburg | Pittsburg, CA | 3 of 3 | 0.113 ppb | 62,500 |
US Army Aviation and Missile Command | Redstone Arsenal, AL | 1 of 14 | 0.109 ppb | 28,500 |
City of Crowley | Crowley, TX | 2 of 16 | 0.108 ppb | 14,800 |
City of Lincoln | Lincoln, NE | 12 of 78 | 0.107 ppb | 277,348 |
City of Mesa* | Mesa, AZ | 1 of 1 | 0.0940 ppb | 466,000 |
Lakeside WD* | Lakeside, CA | 1 of 9 | 0.0833 ppb | 42,200 |
City of Galveston* | Galveston, TX | 2 of 4 | 0.0830 ppb | 50,180 |
Pennsylvania American Norristown* | Norristown, PA | 1 of 2 | 0.0750 ppb | 96,376 |
Rainbow Municipal WD | Fallbrook, CA | 1 of 12 | 0.0725 ppb | 19,611 |
Rincon Del Diablo MWD(ID-1) | Escondido, CA | 1 of 12 | 0.0725 ppb | 24,545 |
Vallecitos Water District | San Marcos, CA | 1 of 12 | 0.0725 ppb | 94,871 |
City of Carlsbad | Carlsbad, CA | 1 of 12 | 0.0725 ppb | 84,838 |
Valley Center MWD* | Valley Center, CA | 1 of 12 | 0.0725 ppb | 25,450 |
Red Bank Water Department | Red Bank, NJ | 2 of 8 | 0.0688 ppb | 12,520 |
City of Taylor* | Taylor, TX | 3 of 3 | 0.0669 ppb | 18,258 |
City of Plano* | Plano, TX | 1 of 1 | 0.0600 ppb | 277,720 |
Pennsylvania American Water Company Clarion* | Butler, PA | 1 of 3 | 0.0500 ppb | 16,600 |
Rockett SUD* | Red Oak, TX | 3 of 8 | 0.0479 ppb | 37,038 |
City of Granbury* | Granbury, TX | 3 of 42 | 0.0464 ppb | 11,193 |
North Shelby Water District | Bagdad, KY | 4 of 16 | 0.0456 ppb | 14,660 |
City of Peoria | Peoria, AZ | 6 of 28 | 0.0428 ppb | 135,975 |
City of Garland | Garland, TX | 1 of 3 | 0.0427 ppb | 236,786 |
Grayslake | Grayslake, IL | 2 of 4 | 0.0418 ppb | 20,330 |
Grover Beach Water Department | Grover Beach, CA | 1 of 8 | 0.0400 ppb | 13,156 |
German Township Water District Inc.* | Evansville, IN | 1 of 2 | 0.0390 ppb | 12,058 |
Elsinore Valley Municipal Water District* | Lake Elsinore, CA | 1 of 20 | 0.0390 ppb | 142,264 |
* 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.