Dibromochloromethane
Redlands City
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 | 1.51 ppb | 50 | 11 | ND - 22.0 ppb |
2015 | 4.14 ppb | 39 | 16 | ND - 32.0 ppb |
2016 | 8.15 ppb | 46 | 35 | ND - 51.0 ppb |
2017 | 1.54 ppb | 36 | 15 | ND - 7.40 ppb |
2018 | 2.19 ppb | 34 | 20 | ND - 17.0 ppb |
2019 | 1.14 ppb | 61 | 23 | ND - 11.0 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 |
---|---|---|
2014-02-04 | 9590-601-1040 | ND |
2014-02-04 | 9590-602-1000 | ND |
2014-02-04 | 9590-603-0820 | 1.40 ppb |
2014-02-04 | 9590-604-1020 | ND |
2014-02-04 | 9590-605-0840 | ND |
2014-02-04 | 9590-606-0935 | ND |
2014-02-04 | 9590-607-0910 | ND |
2014-02-04 | 9590-608-1110 | ND |
2014-03-06 | 9590-031-0935 | ND |
2014-05-08 | 9590-601-1030 | 3.80 ppb |
2014-05-08 | 9590-602-0935 | 1.70 ppb |
2014-05-08 | 9590-603-0950 | 1.20 ppb |
2014-05-08 | 9590-604-1015 | ND |
2014-05-08 | 9590-605-0900 | ND |
2014-05-08 | 9590-606-1055 | ND |
2014-05-08 | 9590-607-0920 | ND |
2014-05-08 | 9590-608-1035 | ND |
2014-05-22 | 4790-003-1030 | ND |
2014-05-22 | 9590-010-0930 | ND |
2014-05-22 | 4790-017-0930 | ND |
2014-05-22 | 4790-021-1005 | ND |
2014-05-22 | 4790-069-1040 | ND |
2014-06-12 | 9590-062-1010 | ND |
2014-07-03 | 9590-029-0920 | ND |
2014-07-03 | 9590-053-1020 | ND |
2014-07-24 | 9590-019-1055 | ND |
2014-08-07 | 9590-002-1030 | ND |
2014-08-07 | 9590-054-0840 | ND |
2014-08-07 | 9590-070-1250 | ND |
2014-08-14 | 9590-601-1040 | 2.10 ppb |
2014-08-14 | 9590-602-1010 | 13.0 ppb |
2014-08-14 | 9590-603-0945 | 15.0 ppb |
2014-08-14 | 9590-604-1020 | 12.0 ppb |
2014-08-14 | 9590-605-0910 | 22.0 ppb |
2014-08-14 | 9590-606-1100 | ND |
2014-08-14 | 9590-607-0925 | ND |
2014-08-14 | 9590-608-0835 | ND |
2014-10-02 | 9590-008-1000 | ND |
2014-10-02 | 9590-060-0840 | ND |
2014-10-30 | 9590-005-1105 | ND |
2014-11-25 | 9590-005-1025 | ND |
2014-12-04 | 9590-601-1045 | ND |
2014-12-04 | 9590-602-0925 | ND |
2014-12-04 | 9590-603-0950 | 2.10 ppb |
2014-12-04 | 9590-604-1020 | ND |
2014-12-04 | 9590-605-0900 | 1.10 ppb |
2014-12-04 | 9590-606-0910 | ND |
2014-12-04 | 9590-607-0910 | ND |
2014-12-04 | 9590-608-0830 | ND |
2014-12-16 | 9590-055-1115 | ND |
2015-01-08 | 9590-022-0945 | ND |
2015-01-08 | 9590-025-1850 | ND |
2015-02-12 | 9590-601-0955 | 3.30 ppb |
2015-02-12 | 9590-602-0900 | 1.40 ppb |
2015-02-12 | 9590-603-0920 | ND |
2015-02-12 | 9590-604-0840 | ND |
2015-02-12 | 9590-605-0830 | ND |
2015-02-12 | 9590-606-1045 | ND |
2015-02-12 | 9590-607-0840 | ND |
2015-02-12 | 9590-608-1015 | 1.10 ppb |
2015-03-12 | 9590-005-0900 | ND |
2015-05-14 | 9590-601-0945 | 4.60 ppb |
2015-05-14 | 9590-602-0930 | 1.40 ppb |
2015-05-14 | 9590-603-0905 | ND |
2015-05-14 | 9590-604-0930 | ND |
2015-05-14 | 9590-605-0845 | ND |
2015-05-14 | 9590-606-1040 | ND |
2015-05-14 | 9590-607-0900 | ND |
2015-05-14 | 9590-608-1040 | 1.40 ppb |
2015-05-21 | 9590-026-1120 | ND |
2015-06-04 | 9590-005-0905 | ND |
2015-08-11 | 9590-601-0900 | 16.0 ppb |
2015-08-11 | 9590-602-0750 | 29.0 ppb |
2015-08-11 | 9590-603-0815 | 21.0 ppb |
2015-08-11 | 9590-604-0940 | 25.0 ppb |
2015-08-11 | 9590-605-0840 | 32.0 ppb |
2015-08-11 | 9590-606-1100 | ND |
2015-08-11 | 9590-607-1215 | ND |
2015-08-11 | 9590-608-1230 | 1.60 ppb |
2015-08-25 | 9590-607-1010 | ND |
2015-10-08 | 9590-005-0900 | ND |
2015-11-12 | 9590-601-0945 | 3.20 ppb |
2015-11-12 | 9590-602-0915 | 4.80 ppb |
2015-11-12 | 9590-603-0810 | 1.80 ppb |
2015-11-12 | 9590-604-0825 | ND |
2015-11-12 | 9590-605-0900 | ND |
2015-11-12 | 9590-606-0850 | ND |
2015-11-12 | 9590-607-1000 | ND |
2015-11-12 | 9590-608-1020 | 14.0 ppb |
2016-02-11 | 9590-601-1030 | 7.80 ppb |
2016-02-11 | 9590-602-0845 | 1.000 ppb |
2016-02-11 | 9590-603-0945 | 1.10 ppb |
2016-02-11 | 9590-604-1015 | ND |
2016-02-11 | 9590-605-0900 | ND |
2016-02-11 | 9590-606-0805 | ND |
2016-02-11 | 9590-607-0825 | ND |
2016-02-11 | 9590-608-1015 | ND |
2016-03-03 | 9590-601-0930 | 2.90 ppb |
2016-04-18 | 9590-602-1005 | 1.60 ppb |
2016-04-18 | 9590-603-1020 | 2.60 ppb |
2016-04-18 | 9590-604-1040 | 7.10 ppb |
2016-04-18 | 9590-605-1000 | 7.90 ppb |
2016-04-25 | 9590-602-1215 | 4.80 ppb |
2016-04-25 | 9590-603-1025 | 10.00 ppb |
2016-04-25 | 9590-604-1045 | 3.20 ppb |
2016-04-25 | 9590-605-1000 | 7.80 ppb |
2016-05-03 | 9590-602-1010 | 1.80 ppb |
2016-05-03 | 9590-603-1025 | 3.40 ppb |
2016-05-03 | 9590-604-1040 | 1.90 ppb |
2016-05-03 | 9590-605-0950 | 4.80 ppb |
2016-05-12 | 9590-026-0915 | ND |
2016-05-12 | 9590-601-1020 | 2.40 ppb |
2016-05-12 | 9590-602-0945 | 1.30 ppb |
2016-05-12 | 9590-603-0930 | 1.60 ppb |
2016-05-12 | 9590-604-1005 | ND |
2016-05-12 | 9590-605-0830 | 1.20 ppb |
2016-05-12 | 9590-606-0820 | ND |
2016-05-12 | 9590-607-0850 | 1.30 ppb |
2016-05-12 | 9590-608-1050 | 3.60 ppb |
2016-08-18 | 5810-601-0110 | 17.0 ppb |
2016-08-18 | 5810-602-1010 | 30.0 ppb |
2016-08-18 | 5810-603-1240 | 6.70 ppb |
2016-08-18 | 5810-604-1255 | 9.50 ppb |
2016-08-18 | 5810-605-0930 | 23.0 ppb |
2016-08-18 | 5810-606-1000 | ND |
2016-08-18 | 5810-607-0945 | ND |
2016-08-18 | 5810-608-0145 | 7.80 ppb |
2016-11-10 | 5810-601-0855 | 38.0 ppb |
2016-11-10 | 5810-602-0920 | 32.0 ppb |
2016-11-10 | 5810-603-0800 | 22.0 ppb |
2016-11-10 | 5810-604-0815 | 7.90 ppb |
2016-11-10 | 5810-605-0845 | 16.0 ppb |
2016-11-10 | 5810-606-0945 | ND |
2016-11-10 | 5810-607-0900 | 33.0 ppb |
2016-11-10 | 5810-608-0830 | 51.0 ppb |
2017-02-16 | 5810-601-0920 | 3.10 ppb |
2017-02-16 | 5810-602-0850 | 5.60 ppb |
2017-02-16 | 5810-603-0820 | 5.80 ppb |
2017-02-16 | 5810-604-0900 | 3.60 ppb |
2017-02-16 | 5810-605-0835 | 1.70 ppb |
2017-02-16 | 5810-606-1055 | ND |
2017-02-16 | 5810-607-1035 | ND |
2017-02-16 | 5810-608-1000 | 6.50 ppb |
2017-03-23 | 5810-008-0925 | ND |
2017-03-23 | 5810-009-1030 | ND |
2017-03-23 | 5810-010-1115 | ND |
2017-03-23 | 5810-019-0855 | ND |
2017-05-11 | 5810-601-0850 | 1.40 ppb |
2017-05-11 | 5810-602-1000 | 1.10 ppb |
2017-05-11 | 5810-603-0940 | ND |
2017-05-11 | 5810-604-0915 | 1.20 ppb |
2017-05-11 | 5810-605-1020 | ND |
2017-05-11 | 5810-606-1110 | ND |
2017-05-11 | 5810-607-1050 | ND |
2017-05-11 | 5810-608-0830 | 1.30 ppb |
2017-08-04 | 5810-601-1035 | 7.40 ppb |
2017-08-04 | 5810-602-1000 | 4.90 ppb |
2017-08-04 | 5810-603-0950 | ND |
2017-08-04 | 5810-604-1015 | ND |
2017-08-04 | 5810-605-0930 | ND |
2017-08-04 | 5810-606-0800 | ND |
2017-08-04 | 5810-607-0915 | 7.40 ppb |
2017-08-04 | 5810-608-1050 | ND |
2017-11-09 | 5810-601-0930 | ND |
2017-11-09 | 5810-602-0840 | 2.90 ppb |
2017-11-09 | 5810-603-0815 | ND |
2017-11-09 | 5810-604-0900 | ND |
2017-11-09 | 5810-605-0910 | ND |
2017-11-09 | 5810-606-1030 | ND |
2017-11-09 | 5810-607-0955 | 1.70 ppb |
2017-11-09 | 5810-608-1000 | ND |
2018-02-23 | 5810-601-1010 | 4.60 ppb |
2018-02-23 | 5810-602-0815 | ND |
2018-02-23 | 5810-603-0930 | 1.000 ppb |
2018-02-23 | 5810-604-0950 | ND |
2018-02-23 | 5810-605-0915 | ND |
2018-02-23 | 5810-606-0800 | 3.30 ppb |
2018-02-23 | 5810-607-1300 | 4.00 ppb |
2018-02-23 | 5810-608-1045 | 1.40 ppb |
2018-05-18 | 5810-601-0900 | 2.80 ppb |
2018-05-18 | 5810-602-0950 | 1.000 ppb |
2018-05-18 | 5810-603-0935 | 1.000 ppb |
2018-05-18 | 5810-604-0915 | 1.10 ppb |
2018-05-18 | 5810-605-1010 | 1.40 ppb |
2018-05-18 | 5810-606-1245 | ND |
2018-05-18 | 5810-607-1230 | ND |
2018-05-18 | 5810-608-0830 | 1.50 ppb |
2018-06-29 | 5810-005-1015 | ND |
2018-08-24 | 4790-601-0915 | 5.50 ppb |
2018-08-24 | 4790-602-1250 | 1.30 ppb |
2018-08-24 | 4790-603-1020 | 6.60 ppb |
2018-08-24 | 4790-604-0950 | ND |
2018-08-24 | 4790-605-0910 | 17.0 ppb |
2018-08-24 | 4790-606-1055 | ND |
2018-08-24 | 4790-607-0935 | 4.00 ppb |
2018-08-24 | 4790-608-0845 | 1.000 ppb |
2018-11-21 | 4790-601-1205 | 13.0 ppb |
2018-11-21 | 4790-602-0715 | ND |
2018-11-21 | 4790-603-0750 | 1.30 ppb |
2018-11-21 | 4790-604-0820 | ND |
2018-11-21 | 4790-605-0905 | ND |
2018-11-21 | 4790-606-1215 | ND |
2018-11-21 | 4790-607-1245 | ND |
2018-11-21 | 4790-608-0940 | 1.60 ppb |
2018-12-20 | 4790-005-0855 | ND |
2019-01-24 | 4790-022-0845 | ND |
2019-01-24 | 4790-025-0910 | ND |
2019-02-08 | 4790-601-0900 | 3.10 ppb |
2019-02-08 | 4790-602-1100 | ND |
2019-02-08 | 4790-603-0940 | 2.80 ppb |
2019-02-08 | 4790-604-0920 | 1.70 ppb |
2019-02-08 | 4790-605-0955 | 1.30 ppb |
2019-02-08 | 4790-606-1300 | ND |
2019-02-08 | 4790-607-1045 | ND |
2019-02-08 | 4790-608-0830 | 6.40 ppb |
2019-02-14 | 4790-601-0945 | 4.40 ppb |
2019-02-14 | 4790-602-1000 | 1.40 ppb |
2019-02-14 | 4790-603-0845 | 1.80 ppb |
2019-02-14 | 4790-604-0910 | 1.60 ppb |
2019-02-14 | 4790-605-0930 | 6.10 ppb |
2019-02-14 | 4790-606-0900 | 2.90 ppb |
2019-02-14 | 4790-607-1045 | 2.30 ppb |
2019-02-14 | 4790-608-1025 | 1.80 ppb |
2019-05-22 | 4790-601-0930 | 11.0 ppb |
2019-05-22 | 4790-602-1000 | ND |
2019-05-22 | 4790-603-0815 | 6.80 ppb |
2019-05-22 | 4790-604-0845 | 1.30 ppb |
2019-05-22 | 4790-605-1025 | ND |
2019-05-22 | 4790-606-1100 | ND |
2019-05-22 | 4790-607-1220 | ND |
2019-05-22 | 4790-608-1315 | 1.60 ppb |
2019-06-20 | 4790-035-0930 | ND |
2019-06-27 | 4790-003-0845 | ND |
2019-06-27 | 4790-069-0945 | ND |
2019-06-27 | 4790-070-1325 | ND |
2019-08-19 | 4790-008-1100 | ND |
2019-08-19 | 4790-062-0950 | ND |
2019-08-21 | 4790-021-1140 | ND |
2019-08-22 | 4790-019-1050 | ND |
2019-08-23 | 4790-601-0945 | 3.50 ppb |
2019-08-23 | 4790-602-0835 | 1.70 ppb |
2019-08-23 | 4790-603-0855 | ND |
2019-08-23 | 4790-604-0920 | ND |
2019-08-23 | 4790-605-0905 | ND |
2019-08-23 | 4790-606-1000 | ND |
2019-08-23 | 4790-607-0930 | ND |
2019-08-23 | 4790-608-1020 | 1.30 ppb |
2019-08-27 | 4790-053-1350 | ND |
2019-08-27 | 4790-055-0800 | ND |
2019-08-27 | 4790-060-1230 | ND |
2019-08-28 | 4790-017-1330 | ND |
2019-08-29 | 4790-029-0945 | ND |
2019-09-10 | 4790-010-0930 | ND |
2019-09-17 | 4790-031-0930 | ND |
2019-09-19 | 4790-025-0915 | ND |
2019-09-19 | 4790-026-1020 | ND |
2019-09-30 | 4790-012-1320 | ND |
2019-09-30 | 4790-022-0910 | ND |
2019-11-15 | 4790-601-0945 | 1.000 ppb |
2019-11-15 | 4790-602-1230 | ND |
2019-11-15 | 4790-603-0920 | 1.000 ppb |
2019-11-15 | 4790-604-0930 | ND |
2019-11-15 | 4790-605-0900 | ND |
2019-11-15 | 4790-606-0815 | ND |
2019-11-15 | 4790-607-0840 | ND |
2019-11-15 | 4790-608-1310 | 2.70 ppb |