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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Central Wy Reg Water Sys Jpb

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.

MORE ABOUT THIS CONTAMINANT

 

178

Samples

0

Samples exceeding legal limit (MCL)

103

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.544 ppb2916ND - 1.40 ppb
20150.414 ppb3719ND - 1.000 ppb
20160.420 ppb3718ND - 1.50 ppb
20170.498 ppb3826ND - 0.980 ppb
20180.574 ppb3725ND - 1.30 ppb
2019N/A00N/A

ppb = parts per billion

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

All test results

Date Lab ID Result
2014-04-08C14040258-001A1.32 ppb
2014-04-08C14040258-002A1.07 ppb
2014-04-08C14040258-003A1.40 ppb
2014-04-08C14040258-004A1.19 ppb
2014-04-08C14040258-005A1.33 ppb
2014-04-08C14040258-006A1.24 ppb
2014-04-08C14040258-007A1.21 ppb
2014-04-08C14040258-009A1.15 ppb
2014-04-08C14040258-011A0.940 ppb
2014-06-25C14060882-001LND
2014-06-25C14060882-002L0.850 ppb
2014-07-08C14070272-001AND
2014-07-08C14070272-002AND
2014-07-08C14070272-003AND
2014-07-08C14070272-004AND
2014-07-08C14070272-005AND
2014-07-08C14070272-006AND
2014-07-08C14070272-007AND
2014-07-08C14070272-009AND
2014-07-08C14070272-011AND
2014-10-07C14100434-001A0.730 ppb
2014-10-07C14100434-002AND
2014-10-07C14100434-003AND
2014-10-07C14100434-004A0.680 ppb
2014-10-07C14100434-005A0.720 ppb
2014-10-07C14100434-006A0.620 ppb
2014-10-07C14100434-007A0.700 ppb
2014-10-07C14100434-009A0.620 ppb
2014-10-07C14100434-011AND
2015-01-06C15010069-001A0.910 ppb
2015-01-06C15010069-002A0.890 ppb
2015-01-06C15010069-003A0.790 ppb
2015-01-06C15010069-004A0.920 ppb
2015-01-06C15010069-005A0.940 ppb
2015-01-06C15010069-006A1.000 ppb
2015-01-06C15010069-007A0.880 ppb
2015-01-06C15010069-009A0.860 ppb
2015-01-06C15010069-011A0.790 ppb
2015-04-07C15040208-001A0.700 ppb
2015-04-07C15040208-002A0.710 ppb
2015-04-07C15040208-003A0.780 ppb
2015-04-07C15040208-004A0.800 ppb
2015-04-07C15040208-005A0.820 ppb
2015-04-07C15040208-006A0.840 ppb
2015-04-07C15040208-007A0.760 ppb
2015-04-07C15040208-009A0.910 ppb
2015-04-07C15040208-011A0.500 ppb
2015-07-07C15070202-001AND
2015-07-07C15070202-002AND
2015-07-07C15070202-003AND
2015-07-07C15070202-004AND
2015-07-07C15070202-005A0.510 ppb
2015-07-07C15070202-006AND
2015-07-07C15070202-007AND
2015-07-07C15070202-009AND
2015-07-07C15070202-011AND
2015-07-14C15070490-001END
2015-10-06C15100213-001AND
2015-10-06C15100213-002AND
2015-10-06C15100213-003AND
2015-10-06C15100213-004AND
2015-10-06C15100213-005AND
2015-10-06C15100213-006AND
2015-10-06C15100213-007AND
2015-10-06C15100213-009AND
2015-10-06C15100213-011AND
2016-01-05C16010071-001A1.50 ppb
2016-01-05C16010071-002A1.10 ppb
2016-01-05C16010071-003A0.900 ppb
2016-01-05C16010071-004A1.000 ppb
2016-01-05C16010071-005A0.900 ppb
2016-01-05C16010071-006A1.30 ppb
2016-01-05C16010071-007A1.10 ppb
2016-01-05C16010071-009A0.910 ppb
2016-01-05C16010071-011A0.850 ppb
2016-04-05C16040146-001A0.620 ppb
2016-04-05C16040146-002A0.650 ppb
2016-04-05C16040146-003AND
2016-04-05C16040146-004A0.680 ppb
2016-04-05C16040146-005A0.700 ppb
2016-04-05C16040146-006A0.740 ppb
2016-04-05C16040146-007A0.740 ppb
2016-04-05C16040146-009A0.780 ppb
2016-04-05C16040146-011A0.540 ppb
2016-06-06C16060160-001DND
2016-07-05C16070073-001AND
2016-07-05C16070073-002AND
2016-07-05C16070073-003AND
2016-07-05C16070073-004AND
2016-07-05C16070073-005AND
2016-07-05C16070073-006AND
2016-07-05C16070073-007AND
2016-07-05C16070073-009AND
2016-07-05C16070073-011AND
2016-10-05C16100154-001A0.530 ppb
2016-10-05C16100154-002AND
2016-10-05C16100154-003AND
2016-10-05C16100154-004AND
2016-10-05C16100154-005AND
2016-10-05C16100154-006AND
2016-10-05C16100154-007AND
2016-10-05C16100154-009AND
2016-10-05C16100154-011BND
2017-01-04C17010096-001A0.740 ppb
2017-01-04C17010096-002A0.670 ppb
2017-01-04C17010096-003A0.930 ppb
2017-01-04C17010096-004A0.800 ppb
2017-01-04C17010096-005A0.860 ppb
2017-01-04C17010096-006A0.710 ppb
2017-01-04C17010096-007A0.910 ppb
2017-01-04C17010096-009A0.810 ppb
2017-01-04C17010096-011A0.900 ppb
2017-04-04C17040071-001A0.770 ppb
2017-04-04C17040071-002A0.680 ppb
2017-04-04C17040071-003A0.980 ppb
2017-04-04C17040071-004A0.730 ppb
2017-04-04C17040071-005A0.880 ppb
2017-04-04C17040071-006A0.600 ppb
2017-04-04C17040071-007A0.690 ppb
2017-04-04C17040071-009A0.740 ppb
2017-04-04C17040071-011A0.750 ppb
2017-06-13C17060420-001LND
2017-06-13C17060420-002LND
2017-07-05C17070062-001AND
2017-07-05C17070062-002AND
2017-07-05C17070062-003AND
2017-07-05C17070062-004AND
2017-07-05C17070062-005AND
2017-07-05C17070062-006AND
2017-07-05C17070062-007AND
2017-07-05C17070062-009AND
2017-07-05C17070062-011AND
2017-10-03C17100100-001A0.510 ppb
2017-10-03C17100100-002A0.670 ppb
2017-10-03C17100100-003A0.570 ppb
2017-10-03C17100100-004A0.770 ppb
2017-10-03C17100100-005A0.540 ppb
2017-10-03C17100100-006AND
2017-10-03C17100100-007A0.560 ppb
2017-10-03C17100100-009A0.620 ppb
2017-10-03C17100100-011A0.530 ppb
2018-01-09C18010249-001A0.880 ppb
2018-01-09C18010249-002A0.980 ppb
2018-01-09C18010249-003A1.10 ppb
2018-01-09C18010249-004A0.960 ppb
2018-01-09C18010249-011A1.10 ppb
2018-01-09C18010249-006A0.640 ppb
2018-01-09C18010249-007A0.760 ppb
2018-01-09C18010249-009A1.10 ppb
2018-01-09C18010249-005A0.960 ppb
2018-04-03C18040084-011A0.650 ppb
2018-04-03C18040084-009A0.590 ppb
2018-04-03C18040084-007A1.10 ppb
2018-04-03C18040084-006A0.830 ppb
2018-04-03C18040084-005A0.850 ppb
2018-04-03C18040084-004A0.990 ppb
2018-04-03C18040084-003A0.680 ppb
2018-04-03C18040084-002A0.920 ppb
2018-04-03C18040084-001AND
2018-06-27C18060967-001DND
2018-07-03C18070084-001AND
2018-07-03C18070084-002AND
2018-07-03C18070084-003AND
2018-07-03C18070084-004AND
2018-07-03C18070084-011AND
2018-07-03C18070084-006AND
2018-07-03C18070084-007AND
2018-07-03C18070084-009AND
2018-07-03C18070084-005AND
2018-10-10C18100435-011A0.670 ppb
2018-10-10C18100435-009A0.610 ppb
2018-10-10C18100435-007AND
2018-10-10C18100435-006A0.620 ppb
2018-10-10C18100435-005A0.670 ppb
2018-10-10C18100435-004A1.30 ppb
2018-10-10C18100435-003A0.820 ppb
2018-10-10C18100435-001A0.900 ppb
2018-10-10C18100435-002A0.550 ppb