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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Status: No national drinking water standard exists

 

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

2015-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

48

states detected

15,220

utilities detected

155 million

people served

48

states over health guideline

11,056

utilities over health guideline

98 million

people served over health guideline

Health concerns for bromoform

Cancer

Harm to reproduction and child development

Change to fetal growth and development

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

States reporting bromoform in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
California85527,456,4331,06332,901,519
Texas2,52117,428,2533,12824,934,942
New York61410,994,66286416,346,334
Ohio6486,193,1369099,264,842
New Jersey1873,113,5923587,322,957
Pennsylvania5323,042,0527667,288,958
North Carolina2912,665,8753603,833,569
Illinois4581,919,1395953,612,445
Louisiana4551,867,6126243,407,453
Wisconsin144866,5863243,151,149
Massachusetts1101,849,7411772,968,060
Oklahoma4491,820,8035922,933,093
Virginia861,314,3321802,872,134
Colorado291971,2614222,761,999
Washington337537,1674842,547,734
Nevada642,116,272952,538,167
Utah76311,3581461,818,776
South Carolina80579,9281281,777,144
Missouri263667,5764101,765,602
Georgia140463,4182761,728,895
Iowa2941,338,2793671,720,959
New Mexico2731,534,3153231,692,498
Kansas5381,434,5646431,683,012
Connecticut78231,6301471,517,202
Minnesota102712,0591731,377,614
Hawaii761,255,925871,375,028
Indiana25242,223431,317,448
Nebraska1081,235,6751331,281,955
Delaware24140,08553858,890
West Virginia100446,462161855,744
Alabama51402,70990777,183
District Of Columbia004664,572
Tennessee19430,38926651,941
Mississippi147523,310156650,043
Arkansas152367,645209536,283
Rhode Island12289,24919478,637
North Dakota90205,777108381,249
New Hampshire6693,125132306,736
Maryland4561,84969267,137
Wyoming7288,197109229,571
Montana7254,494104149,499
Arizona4141,2454141,245
Idaho778,667778,667
Vermont3834,3847273,951
Kentucky5119,563472,198
Alaska3227,5024466,491
Michigan133,816133,816
Maine2212,0312921,644
South Dakota27632763
MORE
LESS

Filtering technologies that reduce bromoform

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Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of bromoform, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Country Estates Water System SouthWest Monroe, LA4 of 4251.5 ppb600
Town of Plain Dealing Water SystemPlain Dealing, LA42 of 42196.3 ppb2,733
Litroe Water SystemMarion, LA48 of 48181.7 ppb369
Pleasant Hills-crossroads Water SystemsJoyce, LA52 of 52177.9 ppb840
Holmesville Water System*Downsville, LA48 of 48164.4 ppb2,310
Linville-haile Water SystemMarion, LA48 of 48156.9 ppb1,635
Wards Chapel Water SystemFarmerville, LA44 of 50150.9 ppb1,350
Union Parish Waterworks District 1Farmerville, LA38 of 38142.5 ppb1,626
Rocky Branch Water SystemFarmerville, LA48 of 48131.2 ppb1,410
Country Estates Water System NorthWest Monroe, LA32 of 36131.0 ppb597
Jones Mcginty Water SystemJones, LA48 of 48128.8 ppb801
Concord Water SystemMarion, LA48 of 48127.5 ppb426
Marion Water SystemMarion, LA48 of 48126.9 ppb1,146
Clay Water Supply CorporationDripping Springs, TX13 of 13120.9 ppb168
Sardis Water SystemGilbert, LA48 of 48109.1 ppb1,404
Darbonne Ws NorthBernice, LA30 of 3098.2 ppb3,186
Point Wilhite Ws*Downsville, LA62 of 6296.0 ppb1,950
Bel-di-gil Water SystemBelcher, LA48 of 4890.0 ppb1,132
Tri-water SystemFarmerville, LA40 of 4084.3 ppb1,245
Darling Water AssociationDarling, MS1 of 181.6 ppb213
Randolph Water SystemJunction City, LA48 of 4881.5 ppb222
Lee County Water Association*Marianna, AR23 of 2381.1 ppb4,760
Moro WaterworksMoro, AR22 of 2280.7 ppb216
Salem Water SystemFarmerville, LA40 of 4878.4 ppb753
Hiwanee Water Association #2Waynesboro, MS24 of 2476.7 ppb855
Mountain Park Public Works AuthorityMountain Park, OK11 of 1174.1 ppb473
Gary Water Supply CorporationGary, TX23 of 2773.6 ppb966
Indiahoma Public Works AuthorityIndiahoma, OK11 of 1173.1 ppb350
Ramsey Water SystemWest Monroe, LA12 of 3672.2 ppb60
Hope Ditch CompanyBrighton, CO1 of 171.8 ppb63
Moore Bayou W/a #3Marks, MS14 of 1467.6 ppb378
Village of Calvin Water SystemCalvin, LA44 of 4867.5 ppb591
Morgan Chapel Water AssociationSturgis, MS1 of 167.3 ppb528
Moore Bayou W/a #2Marks, MS2 of 267.0 ppb528
Bradley Water AssociationStarkville, MS1 of 164.4 ppb457
Town of SturgisSturgis, MS1 of 164.0 ppb808
Hidden Oaks Subdivision WsWest Monroe, LA12 of 3663.3 ppb315
Rowena Water Supply CorporationRowena, TX12 of 1263.0 ppb480
Springlake Mobile Home Park Water SystemKeithville, LA48 of 4862.8 ppb405
Commodore Cove Improvement DistrictFreeport, TX15 of 1562.2 ppb495
Matagorda County Water Control and Improvement District 2Sargent, TX7 of 961.7 ppb471
Wake Forest Water AssociationSturgis, MS1 of 161.5 ppb689
Wildwood Mobile Home Park WsWest Monroe, LA10 of 3461.4 ppb72
Bianchi Flowers Inc.Pescadero, CA5 of 761.1 ppb65
Backwood Village Water SystemSaline, LA34 of 3661.1 ppb783
Pecan Lake Subdivision WsWest Monroe, LA12 of 3660.9 ppb57
Las Deltas Mutual Water SystemFirebaugh, CA4 of 459.8 ppb375
Pleasant Valley Mobile Home ParkDundee, NY2 of 259.5 ppb39
Nicholson Borough AuthorityNicholson, PA2 of 259.5 ppb850
Leray Town Water District 3Watertown, NY4 of 459.3 ppb480

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

UtilityLocationTestsAverage levelPeople served
Military Highway WSC - Las Rusias WTPProgreso, TX49 of 4942.3 ppb14,292
Brownville Water SystemWest Monroe, LA36 of 3640.3 ppb10,872
Nueces County WCID 3*Robstown, TX50 of 5131.9 ppb14,607
City of MendotaMendota, CA48 of 5130.1 ppb11,104
West Hwy 80 Ark Road WSWest Monroe, LA76 of 9629.3 ppb13,386
City of HollisterHollister, CA53 of 5328.5 ppb36,108
Hudson Water Supply CorporationLufkin, TX24 of 2428.4 ppb10,211
General Authority of Franklin*Franklin, PA6 of 628.2 ppb10,000
Texas A&M University Main CampusCollege Station, TX54 of 5425.6 ppb62,500
City of Mineral Wells*Mineral Wells, TX51 of 5125.3 ppb14,826
Town of Discovery BayDiscovery Bay, CA54 of 5424.5 ppb13,500
West Monroe Water SystemWest Monroe, LA96 of 9623.8 ppb15,930
Port Hueneme Water DepartmentPort Hueneme, CA20 of 2023.5 ppb21,887
El Dorado Waterworks*El Dorado, AR50 of 5223.3 ppb20,698
Laguna Madre Water DistrictPort Isabel, TX52 of 5323.0 ppb19,317
City of MidlandMidland, TX90 of 10022.9 ppb132,950
City of HanfordHanford, CA35 of 4922.8 ppb55,880
CoalingaCoalinga, CA71 of 7122.7 ppb19,362
City of San Angelo*San Angelo, TX102 of 10222.5 ppb100,450
City of Mercedes*Mercedes, TX54 of 5422.4 ppb15,700
City of EdinburgEdinburg, TX102 of 10221.1 ppb77,100
McAllen Public UtilityMcallen, TX105 of 10521.1 ppb168,909
Naval Base Ventura County, Port HuenemePoint Mugu, CA48 of 4820.9 ppb11,500
City of PharrPharr, TX99 of 9920.8 ppb77,320
Altus*Altus, OK49 of 4920.3 ppb21,477
City of Abbeville Water SystemAbbeville, LA94 of 9620.0 ppb15,012
City of San BenitoSan Benito, TX49 of 5019.8 ppb24,250
South Island PSDHilton Head Island, SC43 of 4419.7 ppb18,299
Southwest Ouachita Waterworks Inc.West Monroe, LA40 of 4218.7 ppb10,092
West Des Moines Water WorksWest Des Moines, IA95 of 9618.7 ppb56,609
Orange County WCID 1Vidor, TX56 of 5718.6 ppb17,773
MorrisMorris, IL6 of 618.3 ppb11,928
City of LemooreLemoore, CA47 of 5718.2 ppb24,945
Fort Dodge Water SupplyFort Dodge, IA35 of 3818.0 ppb25,206
City of Abilene*Abilene, TX103 of 10417.9 ppb123,886
City of MissionMission, TX54 of 5417.7 ppb77,058
Eunice Water System (LAWCO)Baton Rouge, LA96 of 9617.6 ppb15,753
Military Highway WSC - ProgresoProgreso, TX50 of 5017.4 ppb11,136
Fond Du Lac WaterworksFond Du Lac, WI59 of 6016.9 ppb42,000
Harlingen Water Works System*Harlingen, TX100 of 10116.5 ppb85,900
Marco Rural Water Company*Marion, SC32 of 4416.4 ppb14,939
Ferndale*Ferndale, WA26 of 2616.1 ppb12,290
Weirton Area Water Board*Weirton, WV36 of 3616.0 ppb22,694
Agua SUDMission, TX57 of 5715.7 ppb46,950
Johnson City Water Works*Johnson City, NY6 of 615.7 ppb63,348
Slippery Rock Municipal AuthoritySlippery Rock, PA24 of 2415.6 ppb15,778
Los Angeles County WW District 29 & 80-MalibAlhambra, CA48 of 4815.5 ppb31,040
City of Minot*Minot, ND48 of 4815.2 ppb48,743
Ponca City Mun Water*Ponca City, OK64 of 6415.0 ppb27,155
Lemoore Naval Air StationNas Lemoore, CA57 of 6014.8 ppb11,500

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