Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dibromochloromethane

City of Great Falls

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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

 

212

Samples

0

Samples exceeding legal limit (MCL)

208

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.77 ppb34341.10 ppb - 3.00 ppb
20151.71 ppb3331ND - 2.60 ppb
20162.40 ppb33331.80 ppb - 2.90 ppb
20171.65 ppb33331.000 ppb - 2.20 ppb
20181.02 ppb3533ND - 1.60 ppb
20191.17 ppb44440.650 ppb - 1.60 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-02-18B14021350-003A2.40 ppb
2014-02-18B14021350-004A2.80 ppb
2014-02-19B14021350-001A2.30 ppb
2014-02-19B14021350-005A2.40 ppb
2014-02-19B14021350-008A2.80 ppb
2014-02-20B14021350-002A2.60 ppb
2014-02-20B14021350-006A2.40 ppb
2014-02-20B14021350-007A3.00 ppb
2014-05-05B14050434-001C2.20 ppb
2014-05-08B14050856-001A1.90 ppb
2014-05-08B14050856-002A2.40 ppb
2014-05-08B14050856-003A2.10 ppb
2014-05-08B14050856-004A2.30 ppb
2014-05-27B14052535-001A1.40 ppb
2014-05-27B14052535-002A1.80 ppb
2014-05-28B14052535-004A1.50 ppb
2014-05-29B14052535-003A1.40 ppb
2014-08-05B14080466-001C1.50 ppb
2014-08-12B14081497-007A1.50 ppb
2014-08-13B14081497-003A1.40 ppb
2014-08-13B14081497-004A1.40 ppb
2014-08-13B14081497-005A1.50 ppb
2014-08-14B14081497-001A1.40 ppb
2014-08-14B14081497-002A1.40 ppb
2014-08-14B14081497-006A1.50 ppb
2014-08-14B14081497-008A1.50 ppb
2014-11-24B14111959-001A1.20 ppb
2014-11-24B14111959-004A1.20 ppb
2014-11-24B14111959-005A1.20 ppb
2014-11-24B14111959-007A1.10 ppb
2014-11-24B14111959-008A1.20 ppb
2014-11-25B14111959-002A1.30 ppb
2014-11-25B14111959-003A1.20 ppb
2014-11-25B14111959-006A1.10 ppb
2015-02-12B15021136-001A1.50 ppb
2015-02-12B15021136-002A1.50 ppb
2015-02-12B15021136-003A1.60 ppb
2015-02-18B15021552-001A1.40 ppb
2015-02-18B15021552-002A1.50 ppb
2015-02-18B15021552-003A1.40 ppb
2015-02-18B15021552-005A1.40 ppb
2015-02-19B15021552-004A1.50 ppb
2015-05-20B15051785-001AND
2015-05-20B15051785-002A1.80 ppb
2015-05-20B15051785-003A0.960 ppb
2015-05-20B15051785-004A1.70 ppb
2015-05-20B15051785-005A0.940 ppb
2015-05-20B15051785-006AND
2015-05-20B15051785-007A1.60 ppb
2015-05-20B15051785-008A1.90 ppb
2015-06-02B15060379-001B0.950 ppb
2015-08-18B15081763-001A2.40 ppb
2015-08-18B15081763-002A2.50 ppb
2015-08-18B15081763-003A2.10 ppb
2015-08-18B15081763-004A2.50 ppb
2015-08-18B15081763-005A2.00 ppb
2015-08-18B15081763-006A2.60 ppb
2015-08-18B15081763-007A2.50 ppb
2015-08-18B15081763-008A2.40 ppb
2015-11-19B15111686-001A2.10 ppb
2015-11-19B15111686-002A2.00 ppb
2015-11-19B15111686-003A1.90 ppb
2015-11-19B15111686-004A1.90 ppb
2015-11-19B15111686-005A1.90 ppb
2015-11-19B15111686-006A1.90 ppb
2015-11-19B15111686-007A2.10 ppb
2015-11-19B15111686-008A2.00 ppb
2016-02-11B16021106-001A2.70 ppb
2016-02-11B16021106-002A2.90 ppb
2016-02-11B16021106-003A2.70 ppb
2016-02-11B16021106-004A2.60 ppb
2016-02-11B16021106-005A2.70 ppb
2016-02-11B16021106-006A2.70 ppb
2016-02-11B16021106-007A2.80 ppb
2016-02-11B16021106-008A2.80 ppb
2016-05-11B16051040-001A1.90 ppb
2016-05-11B16051040-002A2.20 ppb
2016-05-11B16051040-003A2.10 ppb
2016-05-11B16051040-004A2.30 ppb
2016-05-11B16051040-005A2.00 ppb
2016-05-11B16051040-006A2.10 ppb
2016-05-11B16051040-007A2.00 ppb
2016-05-18B16051544-001A1.80 ppb
2016-06-13B16061189-001A2.40 ppb
2016-08-18B16081963-001A2.70 ppb
2016-08-18B16081963-002A2.60 ppb
2016-08-18B16081963-003A2.80 ppb
2016-08-18B16081963-004A2.50 ppb
2016-08-18B16081963-005A2.60 ppb
2016-08-18B16081963-006A2.80 ppb
2016-08-18B16081963-007A2.80 ppb
2016-08-23B16082339-001A2.60 ppb
2016-11-17B16111589-001A2.20 ppb
2016-11-17B16111589-002A1.80 ppb
2016-11-17B16111589-003A2.30 ppb
2016-11-17B16111589-004A1.80 ppb
2016-11-17B16111589-005A2.30 ppb
2016-11-17B16111589-006A2.40 ppb
2016-11-17B16111589-007A2.40 ppb
2016-11-21B16111800-001A1.80 ppb
2017-02-14B17020956-001A1.70 ppb
2017-02-14B17020956-002A1.70 ppb
2017-02-14B17020956-003A1.60 ppb
2017-02-14B17020956-004A1.80 ppb
2017-02-14B17020956-005A1.70 ppb
2017-02-14B17020956-006A1.60 ppb
2017-02-14B17020956-007A1.90 ppb
2017-02-14B17020956-008A2.20 ppb
2017-05-17B17051728-001A1.90 ppb
2017-05-17B17051728-002A1.80 ppb
2017-05-17B17051728-003A1.90 ppb
2017-05-17B17051728-004A1.90 ppb
2017-05-17B17051728-005A1.90 ppb
2017-05-17B17051728-006A1.90 ppb
2017-05-17B17051728-007A1.90 ppb
2017-05-18B17051830-001A1.90 ppb
2017-06-06B17060662-001A2.20 ppb
2017-08-16B17082053-001A1.80 ppb
2017-08-16B17082053-002A1.50 ppb
2017-08-16B17082053-003A1.80 ppb
2017-08-16B17082053-004A1.50 ppb
2017-08-16B17082053-005A1.50 ppb
2017-08-16B17082053-006A1.80 ppb
2017-08-17B17082053-007A1.70 ppb
2017-08-17B17082053-008A1.70 ppb
2017-11-16B17111476-001A1.30 ppb
2017-11-16B17111476-002A1.10 ppb
2017-11-16B17111476-003A1.20 ppb
2017-11-16B17111476-004A1.20 ppb
2017-11-16B17111476-005A1.20 ppb
2017-11-20B17111867-001A1.30 ppb
2017-11-20B17111867-002A1.000 ppb
2017-11-20B17111867-003A1.20 ppb
2018-01-24B18011760-001F1.30 ppb
2018-02-13B18021264-001A1.50 ppb
2018-02-13B18021264-002A1.50 ppb
2018-02-13B18021264-003A1.60 ppb
2018-02-13B18021264-004A1.50 ppb
2018-02-13B18021264-005A1.50 ppb
2018-02-13B18021264-006A1.50 ppb
2018-02-15B18021264-007A1.60 ppb
2018-02-15B18021264-008A1.50 ppb
2018-05-18B18052149-002A1.30 ppb
2018-05-18B18052149-007A1.40 ppb
2018-05-18B18052149-008A1.40 ppb
2018-05-21B18052149-001A1.20 ppb
2018-05-21B18052149-003A1.20 ppb
2018-05-21B18052149-004A1.40 ppb
2018-05-21B18052149-005A1.30 ppb
2018-05-21B18052149-006A1.30 ppb
2018-08-15B18081851-001A0.570 ppb
2018-08-15B18081851-002A0.640 ppb
2018-08-15B18081851-003AND
2018-08-15B18081851-004A0.560 ppb
2018-08-15B18081851-006A0.580 ppb
2018-08-15B18081851-007A0.720 ppb
2018-08-15B18081851-008A0.670 ppb
2018-08-16B18081851-005A0.580 ppb
2018-11-01B18110214-001A0.630 ppb
2018-11-01B18110214-002A0.600 ppb
2018-11-19B18111832-001A0.930 ppb
2018-11-19B18111832-003AND
2018-11-19B18111832-004A0.780 ppb
2018-11-19B18111832-006A0.850 ppb
2018-11-19B18111832-008A0.870 ppb
2018-11-20B18111832-002A0.840 ppb
2018-11-20B18111832-005A0.870 ppb
2018-11-20B18111832-007A0.890 ppb
2019-01-30B19012302-001A0.960 ppb
2019-02-11B19020678-001F0.940 ppb
2019-02-12B19021080-001A0.960 ppb
2019-02-12B19021080-002A1.10 ppb
2019-02-12B19021080-006A0.900 ppb
2019-02-12B19021080-007A1.20 ppb
2019-02-13B19021080-003A1.10 ppb
2019-02-13B19021080-004A1.000 ppb
2019-02-13B19021080-005A0.920 ppb
2019-02-13B19021080-008A1.000 ppb
2019-02-13B19021081-001A0.710 ppb
2019-03-25B19032203-001A0.890 ppb
2019-03-27B19032376-001A1.40 ppb
2019-03-28B19032376-002A1.50 ppb
2019-03-28B19032376-003A1.30 ppb
2019-03-28B19032376-004A1.50 ppb
2019-03-28B19032376-005A0.950 ppb
2019-03-28B19032376-006A0.650 ppb
2019-03-28B19032376-007A1.40 ppb
2019-03-28B19032376-008A1.50 ppb
2019-05-21B19052229-001A0.880 ppb
2019-05-21B19052229-004A1.30 ppb
2019-05-21B19052229-006A0.880 ppb
2019-05-21B19052229-008A1.10 ppb
2019-05-22B19052229-002A1.20 ppb
2019-05-22B19052229-003A0.960 ppb
2019-05-22B19052229-005A0.980 ppb
2019-05-22B19052229-007A1.000 ppb
2019-08-21B19082305-001A1.20 ppb
2019-08-21B19082305-004A1.50 ppb
2019-08-21B19082305-005A1.30 ppb
2019-08-21B19082305-006A1.50 ppb
2019-08-22B19082305-002A1.20 ppb
2019-08-22B19082305-003A1.40 ppb
2019-08-22B19082305-007A1.40 ppb
2019-08-22B19082305-008A1.60 ppb
2019-11-19B19112018-001A1.40 ppb
2019-11-19B19112018-002A1.30 ppb
2019-11-19B19112018-004A1.30 ppb
2019-11-19B19112018-006A1.20 ppb
2019-11-19B19112018-007A1.20 ppb
2019-11-19B19112018-008A1.10 ppb
2019-11-20B19112018-003A1.30 ppb
2019-11-20B19112018-005A1.20 ppb