Dibromochloromethane
Azusa Light and Water
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 5.38 ppb | 43 | 32 | ND - 20.0 ppb |
2015 | 6.13 ppb | 43 | 32 | ND - 27.0 ppb |
2016 | 7.85 ppb | 45 | 34 | ND - 41.0 ppb |
2017 | 7.80 ppb | 42 | 32 | ND - 19.0 ppb |
2018 | 9.35 ppb | 43 | 32 | ND - 39.0 ppb |
2019 | 7.13 ppb | 43 | 32 | ND - 20.0 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 |
---|---|---|
2014-01-29 | 9588-800-1155 | 5.90 ppb |
2014-01-29 | 9588-801-1215 | 1.50 ppb |
2014-01-29 | 9588-802-1300 | 1.90 ppb |
2014-01-29 | 9588-803-1235 | 1.50 ppb |
2014-01-29 | 9588-804-1240 | 1.50 ppb |
2014-01-29 | 9588-805-1250 | 1.50 ppb |
2014-01-29 | 9588-806-1310 | 4.10 ppb |
2014-01-29 | 9588-807-1225 | 1.40 ppb |
2014-04-28 | 9588-800-0825 | 8.60 ppb |
2014-04-28 | 9588-801-0810 | 8.80 ppb |
2014-04-28 | 9588-802-0845 | 8.40 ppb |
2014-04-28 | 9588-803-0730 | 13.0 ppb |
2014-04-28 | 9588-804-0740 | 4.20 ppb |
2014-04-28 | 9588-805-0750 | 5.40 ppb |
2014-04-28 | 9588-806-0900 | 12.0 ppb |
2014-04-28 | 9588-807-0800 | 5.70 ppb |
2014-07-29 | 9588-800-1150 | 1.80 ppb |
2014-07-29 | 9588-801-1210 | 2.50 ppb |
2014-07-29 | 9588-802-1310 | 8.70 ppb |
2014-07-29 | 9588-803-1235 | 4.70 ppb |
2014-07-29 | 9588-804-1240 | 5.10 ppb |
2014-07-29 | 9588-805-1255 | 5.00 ppb |
2014-07-29 | 9588-806-0900 | 11.0 ppb |
2014-07-29 | 9588-807-1220 | 3.40 ppb |
2014-08-06 | 9588-003-0930 | ND |
2014-08-06 | 9588-004-0920 | ND |
2014-08-06 | 9588-005-1025 | ND |
2014-08-06 | 9588-006-1040 | ND |
2014-08-06 | 9588-007-1055 | ND |
2014-08-06 | 9588-008-1105 | ND |
2014-08-06 | 9588-033-0950 | ND |
2014-08-06 | 9588-034-1000 | ND |
2014-09-17 | 9588-002-0910 | ND |
2014-10-29 | 9588-800-0820 | 20.0 ppb |
2014-10-29 | 9588-801-0810 | 6.50 ppb |
2014-10-29 | 9588-802-0840 | 12.0 ppb |
2014-10-29 | 9588-803-0730 | 18.0 ppb |
2014-10-29 | 9588-804-0740 | 9.40 ppb |
2014-10-29 | 9588-805-0750 | 13.0 ppb |
2014-10-29 | 9588-806-0850 | 15.0 ppb |
2014-10-29 | 9588-807-0800 | 10.00 ppb |
2014-11-06 | 9588-001-0910 | ND |
2014-11-06 | 9588-010-0930 | ND |
2015-01-30 | 9588-800-0825 | 27.0 ppb |
2015-01-30 | 9588-801-0810 | 6.20 ppb |
2015-01-30 | 9588-802-0840 | 10.00 ppb |
2015-01-30 | 9588-803-0730 | 15.0 ppb |
2015-01-30 | 9588-804-0740 | 4.40 ppb |
2015-01-30 | 9588-805-0750 | 7.60 ppb |
2015-01-30 | 9588-806-0855 | 16.0 ppb |
2015-01-30 | 9588-807-0800 | 5.80 ppb |
2015-04-29 | 9588-800-0825 | 24.0 ppb |
2015-04-29 | 9588-801-0810 | 8.10 ppb |
2015-04-29 | 9588-802-0845 | 5.90 ppb |
2015-04-29 | 9588-803-0730 | 8.60 ppb |
2015-04-29 | 9588-804-0740 | 4.30 ppb |
2015-04-29 | 9588-805-0750 | 3.40 ppb |
2015-04-29 | 9588-806-0900 | 9.10 ppb |
2015-04-29 | 9588-807-0800 | 2.40 ppb |
2015-07-29 | 9588-800-0840 | 13.0 ppb |
2015-07-29 | 9588-801-0825 | 2.90 ppb |
2015-07-29 | 9588-802-0855 | 3.80 ppb |
2015-07-29 | 9588-803-0745 | 2.40 ppb |
2015-07-29 | 9588-804-0755 | 2.70 ppb |
2015-07-29 | 9588-805-0805 | 2.40 ppb |
2015-07-29 | 9588-806-0915 | 7.00 ppb |
2015-07-29 | 9588-807-0815 | 1.80 ppb |
2015-08-05 | 9588-002-0925 | ND |
2015-08-05 | 9588-003-0850 | ND |
2015-08-05 | 9588-004-0840 | ND |
2015-08-05 | 9588-005-0935 | ND |
2015-08-05 | 9588-007-0945 | ND |
2015-08-05 | 9588-008-0955 | ND |
2015-08-05 | 9588-033-0905 | ND |
2015-08-05 | 9588-034-0915 | ND |
2015-08-26 | 9588-006-0815 | ND |
2015-10-30 | 9588-800-0825 | 24.0 ppb |
2015-10-30 | 9588-801-0810 | 2.90 ppb |
2015-10-30 | 9588-802-0845 | 8.70 ppb |
2015-10-30 | 9588-803-0730 | 11.0 ppb |
2015-10-30 | 9588-804-0740 | 5.60 ppb |
2015-10-30 | 9588-805-0750 | 5.40 ppb |
2015-10-30 | 9588-806-0855 | 9.30 ppb |
2015-10-30 | 9588-807-0800 | 2.80 ppb |
2015-11-04 | 9588-001-0920 | ND |
2015-11-04 | 9588-010-1030 | ND |
2016-01-29 | 9588-800-0830 | 7.20 ppb |
2016-01-29 | 9588-801-0815 | 3.00 ppb |
2016-01-29 | 9588-802-0845 | 4.90 ppb |
2016-01-29 | 9588-803-0730 | 11.0 ppb |
2016-01-29 | 9588-804-0740 | 5.50 ppb |
2016-01-29 | 9588-805-0750 | 5.10 ppb |
2016-01-29 | 9588-806-0900 | 8.80 ppb |
2016-01-29 | 9588-807-0800 | 4.70 ppb |
2016-04-29 | 9588-800-0830 | 5.10 ppb |
2016-04-29 | 9588-801-0815 | 6.30 ppb |
2016-04-29 | 9588-802-0850 | 10.00 ppb |
2016-04-29 | 9588-803-0730 | 13.0 ppb |
2016-04-29 | 9588-804-0740 | 3.80 ppb |
2016-04-29 | 9588-805-0750 | 4.00 ppb |
2016-04-29 | 9588-806-0905 | 14.0 ppb |
2016-04-29 | 9588-807-0800 | 2.40 ppb |
2016-07-29 | 9588-800-0805 | 6.90 ppb |
2016-07-29 | 9588-801-0750 | 2.50 ppb |
2016-07-29 | 9588-802-0820 | 8.40 ppb |
2016-07-29 | 9588-803-0715 | 11.0 ppb |
2016-07-29 | 9588-804-0720 | 3.30 ppb |
2016-07-29 | 9588-805-0730 | 3.70 ppb |
2016-07-29 | 9588-806-0835 | 18.0 ppb |
2016-07-29 | 9588-807-0740 | 2.10 ppb |
2016-08-09 | 9588-002-0845 | ND |
2016-08-09 | 9588-003-0850 | ND |
2016-08-09 | 9588-004-0930 | ND |
2016-08-09 | 9588-005-0940 | ND |
2016-08-09 | 9588-006-1010 | ND |
2016-08-09 | 9588-007-1000 | ND |
2016-08-09 | 9588-008-0950 | ND |
2016-08-09 | 9588-033-0910 | ND |
2016-08-09 | 9588-034-0920 | ND |
2016-10-31 | 9588-800-0820 | 41.0 ppb |
2016-10-31 | 9588-801-0800 | 24.0 ppb |
2016-10-31 | 9588-802-0845 | 16.0 ppb |
2016-10-31 | 9588-804-0730 | 11.0 ppb |
2016-10-31 | 9588-805-0740 | 14.0 ppb |
2016-10-31 | 9588-806-0900 | 25.0 ppb |
2016-10-31 | 9588-807-0750 | 16.0 ppb |
2016-11-02 | 9588-803-0705 | 23.0 ppb |
2016-11-07 | 9588-001-0815 | ND |
2016-11-07 | 9588-010-0830 | ND |
2016-12-15 | 9588-800-0810 | 14.0 ppb |
2016-12-15 | 9588-803-0735 | 4.50 ppb |
2017-01-31 | 9588-800-0815 | 12.0 ppb |
2017-01-31 | 9588-801-0800 | 7.00 ppb |
2017-01-31 | 9588-802-0830 | 9.50 ppb |
2017-01-31 | 9588-803-0710 | 8.20 ppb |
2017-01-31 | 9588-804-0725 | 8.00 ppb |
2017-01-31 | 9588-805-0735 | 8.50 ppb |
2017-01-31 | 9588-806-0845 | 12.0 ppb |
2017-01-31 | 9588-807-0750 | 6.70 ppb |
2017-04-27 | 9588-800-1005 | 19.0 ppb |
2017-04-27 | 9588-801-0940 | 8.60 ppb |
2017-04-27 | 9588-802-0840 | 12.0 ppb |
2017-04-27 | 9588-803-0915 | 9.20 ppb |
2017-04-27 | 9588-804-0905 | 11.0 ppb |
2017-04-27 | 9588-805-0855 | 10.00 ppb |
2017-04-27 | 9588-806-0825 | 16.0 ppb |
2017-04-27 | 9588-807-0925 | 8.00 ppb |
2017-07-28 | 9588-800-0940 | 12.0 ppb |
2017-07-28 | 9588-801-1000 | 6.10 ppb |
2017-07-28 | 9588-802-1115 | 11.0 ppb |
2017-07-28 | 9588-803-1035 | 6.90 ppb |
2017-07-28 | 9588-804-1045 | 7.00 ppb |
2017-07-28 | 9588-805-1100 | 7.30 ppb |
2017-07-28 | 9588-806-1130 | 16.0 ppb |
2017-07-28 | 9588-807-1015 | 5.10 ppb |
2017-08-14 | 9588-002-0825 | ND |
2017-08-14 | 9588-003-0815 | ND |
2017-08-14 | 9588-004-0850 | ND |
2017-08-14 | 9588-006-0925 | ND |
2017-08-14 | 9588-007-0910 | ND |
2017-08-14 | 9588-008-0940 | ND |
2017-08-14 | 9588-033-0830 | ND |
2017-08-14 | 9588-034-0835 | ND |
2017-10-30 | 9588-800-0825 | 12.0 ppb |
2017-10-30 | 9588-801-0810 | 7.80 ppb |
2017-10-30 | 9588-802-0845 | 8.50 ppb |
2017-10-30 | 9588-803-0730 | 13.0 ppb |
2017-10-30 | 9588-804-0740 | 18.0 ppb |
2017-10-30 | 9588-805-0750 | 6.40 ppb |
2017-10-30 | 9588-806-0900 | 17.0 ppb |
2017-10-30 | 9588-807-0800 | 7.70 ppb |
2017-11-08 | 9588-001-0815 | ND |
2017-11-08 | 9588-010-0830 | ND |
2018-01-30 | 9588-800-0830 | 36.0 ppb |
2018-01-30 | 9588-801-0815 | 22.0 ppb |
2018-01-30 | 9588-802-0845 | 29.0 ppb |
2018-01-30 | 9588-803-0735 | 35.0 ppb |
2018-01-30 | 9588-804-0745 | 25.0 ppb |
2018-01-30 | 9588-805-0755 | 20.0 ppb |
2018-01-30 | 9588-806-0900 | 39.0 ppb |
2018-02-13 | 9588-807-0730 | 4.60 ppb |
2018-04-30 | 9588-800-0820 | 15.0 ppb |
2018-04-30 | 9588-801-0805 | 4.70 ppb |
2018-04-30 | 9588-802-0845 | 6.20 ppb |
2018-04-30 | 9588-803-0720 | 19.0 ppb |
2018-04-30 | 9588-804-0730 | 9.80 ppb |
2018-04-30 | 9588-805-0740 | 5.30 ppb |
2018-04-30 | 9588-806-0905 | 8.50 ppb |
2018-04-30 | 9588-807-0755 | 3.80 ppb |
2018-05-08 | 9588-005-0855 | ND |
2018-07-31 | 9588-800-0805 | 19.0 ppb |
2018-07-31 | 9588-801-0750 | 2.00 ppb |
2018-07-31 | 9588-802-0820 | 3.90 ppb |
2018-07-31 | 9588-803-0705 | 11.0 ppb |
2018-07-31 | 9588-804-0715 | 2.20 ppb |
2018-07-31 | 9588-805-0725 | 2.60 ppb |
2018-07-31 | 9588-806-0835 | 6.50 ppb |
2018-07-31 | 9588-807-0740 | 1.70 ppb |
2018-08-08 | 9588-002-0855 | ND |
2018-08-08 | 9588-003-0825 | ND |
2018-08-08 | 9588-004-0815 | ND |
2018-08-08 | 9588-006-0915 | ND |
2018-08-08 | 9588-007-0930 | ND |
2018-08-08 | 9588-008-0945 | ND |
2018-08-08 | 9588-033-0840 | ND |
2018-08-08 | 9588-034-0845 | ND |
2018-10-29 | 9588-800-0815 | 22.0 ppb |
2018-10-29 | 9588-801-0755 | 5.20 ppb |
2018-10-29 | 9588-802-0835 | 6.80 ppb |
2018-10-29 | 9588-803-0715 | 12.0 ppb |
2018-10-29 | 9588-804-0725 | 6.10 ppb |
2018-10-29 | 9588-805-0735 | 5.30 ppb |
2018-10-29 | 9588-806-0900 | 8.80 ppb |
2018-10-29 | 9588-807-0745 | 4.20 ppb |
2018-11-06 | 9588-010-1120 | ND |
2018-12-05 | 9588-001-0805 | ND |
2019-01-30 | 9588-800-0810 | 5.70 ppb |
2019-01-30 | 9588-801-0755 | 4.90 ppb |
2019-01-30 | 9588-802-0825 | 5.60 ppb |
2019-01-30 | 9588-803-0705 | 13.0 ppb |
2019-01-30 | 9588-804-0715 | 4.80 ppb |
2019-01-30 | 9588-805-0725 | 5.20 ppb |
2019-01-30 | 9588-806-1215 | 6.40 ppb |
2019-01-30 | 9588-807-0740 | 4.40 ppb |
2019-04-30 | 9588-800-0815 | 7.10 ppb |
2019-04-30 | 9588-801-0755 | 4.70 ppb |
2019-04-30 | 9588-802-0835 | 7.40 ppb |
2019-04-30 | 9588-803-0715 | 16.0 ppb |
2019-04-30 | 9588-804-0725 | 5.60 ppb |
2019-04-30 | 9588-805-0735 | 5.40 ppb |
2019-04-30 | 9588-806-0855 | 9.10 ppb |
2019-04-30 | 9588-807-0745 | 4.90 ppb |
2019-05-21 | 9588-005-0915 | ND |
2019-07-30 | 9588-800-0730 | 8.80 ppb |
2019-07-30 | 9588-801-0715 | 6.80 ppb |
2019-07-30 | 9588-802-0750 | 8.60 ppb |
2019-07-30 | 9588-803-0625 | 15.0 ppb |
2019-07-30 | 9588-804-0635 | 7.50 ppb |
2019-07-30 | 9588-805-0645 | 7.10 ppb |
2019-07-30 | 9588-806-0805 | 11.0 ppb |
2019-07-30 | 9588-807-0700 | 5.50 ppb |
2019-08-19 | 9588-003-0940 | ND |
2019-08-19 | 9588-004-0950 | ND |
2019-08-19 | 9588-006-1010 | ND |
2019-08-19 | 9588-007-1020 | ND |
2019-08-19 | 9588-008-1030 | ND |
2019-08-19 | 9588-033-0915 | ND |
2019-08-19 | 9588-034-0905 | ND |
2019-09-25 | 9588-002-0710 | ND |
2019-10-30 | 9588-800-0800 | 19.0 ppb |
2019-10-30 | 9588-801-0745 | 14.0 ppb |
2019-10-30 | 9588-802-0820 | 19.0 ppb |
2019-10-30 | 9588-803-0700 | 20.0 ppb |
2019-10-30 | 9588-804-0710 | 15.0 ppb |
2019-10-30 | 9588-805-0720 | 13.0 ppb |
2019-10-30 | 9588-806-0835 | 17.0 ppb |
2019-10-30 | 9588-807-0730 | 9.00 ppb |
2019-11-05 | 9588-001-0820 | ND |
2019-11-05 | 9588-010-0840 | ND |