Dibromochloromethane
Yorba Linda Water District
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 | 4.28 ppb | 68 | 32 | ND - 16.7 ppb |
2015 | 8.47 ppb | 48 | 32 | ND - 21.0 ppb |
2016 | 9.28 ppb | 52 | 34 | ND - 33.3 ppb |
2017 | 3.45 ppb | 54 | 32 | ND - 10.00 ppb |
2018 | 4.97 ppb | 52 | 32 | ND - 11.3 ppb |
2019 | 12.1 ppb | 51 | 32 | ND - 33.6 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 |
---|---|---|
2014-01-06 | 3761-801-1128 | 6.70 ppb |
2014-01-06 | 3761-802-1140 | 7.40 ppb |
2014-01-06 | 3761-803-1050 | 7.10 ppb |
2014-01-06 | 3761-804-1120 | 7.10 ppb |
2014-01-06 | 3761-805-1030 | 6.80 ppb |
2014-01-06 | 3761-806-1107 | 5.50 ppb |
2014-01-06 | 3761-807-1040 | 7.40 ppb |
2014-01-06 | 3761-808-1152 | 6.90 ppb |
2014-01-08 | 4417-001-0905 | ND |
2014-01-08 | 4417-002-0830 | ND |
2014-01-08 | 4417-003-0845 | ND |
2014-01-08 | 4417-004-0855 | ND |
2014-01-08 | 4417-006-1005 | ND |
2014-01-08 | 4417-007-0950 | ND |
2014-01-08 | 4417-008-0920 | ND |
2014-01-08 | 4417-011-0935 | ND |
2014-01-08 | 4417-020-0815 | ND |
2014-01-08 | 4417-023-0800 | ND |
2014-04-02 | 4417-001-0800 | ND |
2014-04-02 | 4417-002-0855 | ND |
2014-04-02 | 4417-003-0900 | ND |
2014-04-02 | 4417-004-0845 | ND |
2014-04-02 | 4417-006-0835 | ND |
2014-04-02 | 4417-007-0815 | ND |
2014-04-02 | 4417-008-0840 | ND |
2014-04-02 | 4417-011-0945 | ND |
2014-04-02 | 4417-020-0955 | ND |
2014-04-09 | 3761-801-1205 | 9.30 ppb |
2014-04-09 | 3761-802-1222 | 9.00 ppb |
2014-04-09 | 3761-803-1143 | 9.90 ppb |
2014-04-09 | 3761-804-1212 | 9.10 ppb |
2014-04-09 | 3761-805-1130 | 8.80 ppb |
2014-04-09 | 3761-806-1154 | 8.90 ppb |
2014-04-09 | 3761-807-1137 | 9.20 ppb |
2014-04-09 | 3761-808-1236 | 7.80 ppb |
2014-07-09 | 4417-001-0805 | ND |
2014-07-09 | 4417-003-0915 | ND |
2014-07-09 | 4417-004-0900 | ND |
2014-07-09 | 4417-006-0835 | ND |
2014-07-09 | 4417-008-0845 | ND |
2014-07-09 | 4417-011-0925 | ND |
2014-07-09 | 4417-020-0950 | ND |
2014-07-11 | 3761-801-1229 | 7.00 ppb |
2014-07-11 | 3761-802-1254 | 6.40 ppb |
2014-07-11 | 3761-803-1204 | 13.4 ppb |
2014-07-11 | 3761-804-1326 | 16.7 ppb |
2014-07-11 | 3761-805-1144 | 13.4 ppb |
2014-07-11 | 3761-806-1429 | 13.3 ppb |
2014-07-11 | 3761-807-1131 | 12.2 ppb |
2014-07-11 | 3761-808-1348 | 13.6 ppb |
2014-08-21 | 4417-002-1105 | ND |
2014-09-03 | 4417-007-1130 | ND |
2014-10-08 | 4417-001-0815 | ND |
2014-10-08 | 4417-002-0920 | ND |
2014-10-08 | 4417-003-0930 | ND |
2014-10-08 | 4417-004-0910 | ND |
2014-10-08 | 4417-006-0840 | ND |
2014-10-08 | 4417-008-0900 | ND |
2014-10-08 | 4417-011-0850 | ND |
2014-10-08 | 4417-020-1000 | ND |
2014-10-09 | 3761-801-1111 | 8.30 ppb |
2014-10-09 | 3761-802-1132 | 9.90 ppb |
2014-10-09 | 3761-803-1049 | 9.10 ppb |
2014-10-09 | 3761-804-1119 | 10.6 ppb |
2014-10-09 | 3761-805-1029 | 7.10 ppb |
2014-10-09 | 3761-806-1100 | 6.30 ppb |
2014-10-09 | 3761-807-1037 | 9.40 ppb |
2014-10-09 | 3761-808-1145 | 7.40 ppb |
2015-01-05 | 3761-801-1437 | 15.1 ppb |
2015-01-05 | 3761-802-1458 | 14.1 ppb |
2015-01-05 | 3761-803-1045 | 19.2 ppb |
2015-01-05 | 3761-804-1445 | 18.3 ppb |
2015-01-05 | 3761-805-1025 | 17.9 ppb |
2015-01-05 | 3761-806-1425 | 20.0 ppb |
2015-01-05 | 3761-807-1031 | 21.0 ppb |
2015-01-05 | 3761-808-1515 | 11.9 ppb |
2015-01-14 | 4417-004-0830 | ND |
2015-01-14 | 4417-008-0915 | ND |
2015-02-11 | 4417-006-0850 | ND |
2015-02-19 | 4417-020-0840 | ND |
2015-02-19 | 4417-023-0925 | ND |
2015-03-11 | 4417-011-1125 | ND |
2015-03-30 | 4417-007-1005 | ND |
2015-04-01 | 4417-004-0855 | ND |
2015-04-01 | 4417-008-0950 | ND |
2015-04-01 | 3761-801-1121 | 13.4 ppb |
2015-04-01 | 3761-802-1139 | 13.0 ppb |
2015-04-01 | 3761-803-1101 | 13.3 ppb |
2015-04-01 | 3761-804-1127 | 14.9 ppb |
2015-04-01 | 3761-805-1045 | 11.8 ppb |
2015-04-01 | 3761-806-1112 | 9.60 ppb |
2015-04-01 | 3761-807-1052 | 12.4 ppb |
2015-04-01 | 3761-808-1150 | 11.6 ppb |
2015-07-07 | 3761-801-1105 | 11.7 ppb |
2015-07-07 | 3761-802-1120 | 11.9 ppb |
2015-07-07 | 3761-803-1040 | 13.9 ppb |
2015-07-07 | 3761-804-1111 | 13.6 ppb |
2015-07-07 | 3761-805-1025 | 11.3 ppb |
2015-07-07 | 3761-806-1056 | 11.1 ppb |
2015-07-07 | 3761-807-1031 | 12.9 ppb |
2015-07-07 | 3761-808-1208 | 10.9 ppb |
2015-07-08 | 4417-001-0915 | ND |
2015-07-08 | 4417-002-0835 | ND |
2015-07-08 | 4417-003-0820 | ND |
2015-07-08 | 4417-004-0850 | ND |
2015-07-08 | 4417-008-0900 | ND |
2015-10-07 | 4417-004-0905 | ND |
2015-10-08 | 4417-008-1105 | ND |
2015-10-09 | 3761-801-1147 | 7.80 ppb |
2015-10-09 | 3761-802-1128 | 15.1 ppb |
2015-10-09 | 3761-803-1210 | 8.40 ppb |
2015-10-09 | 3761-804-1142 | 11.2 ppb |
2015-10-09 | 3761-805-1220 | 7.00 ppb |
2015-10-09 | 3761-806-1157 | 3.20 ppb |
2015-10-09 | 3761-807-1227 | 13.3 ppb |
2015-10-09 | 3761-808-1115 | 5.90 ppb |
2016-01-07 | 3761-801-1247 | 11.3 ppb |
2016-01-07 | 3761-802-1308 | 26.0 ppb |
2016-01-07 | 3761-803-1227 | 7.10 ppb |
2016-01-07 | 3761-804-1252 | 26.0 ppb |
2016-01-07 | 3761-805-1135 | 6.70 ppb |
2016-01-07 | 3761-806-1237 | 5.90 ppb |
2016-01-07 | 3761-807-1145 | 7.40 ppb |
2016-01-07 | 3761-808-1318 | 15.1 ppb |
2016-01-14 | 4417-001-0920 | ND |
2016-01-14 | 4417-004-0900 | ND |
2016-01-14 | 4417-006-0830 | ND |
2016-01-14 | 4417-007-1005 | ND |
2016-01-14 | 4417-008-0845 | ND |
2016-01-14 | 4417-011-1025 | ND |
2016-01-14 | 4417-020-0815 | ND |
2016-01-14 | 4417-023-0800 | ND |
2016-02-01 | 3761-802-1235 | 17.7 ppb |
2016-02-01 | 3761-804-1225 | 17.7 ppb |
2016-04-06 | 3761-801-1150 | 20.3 ppb |
2016-04-06 | 3761-802-1210 | 23.5 ppb |
2016-04-06 | 3761-803-1055 | 20.6 ppb |
2016-04-06 | 3761-804-1158 | 23.7 ppb |
2016-04-06 | 3761-805-1035 | 33.3 ppb |
2016-04-06 | 3761-806-1135 | 27.6 ppb |
2016-04-06 | 3761-807-1045 | 31.3 ppb |
2016-04-06 | 3761-808-1220 | 17.0 ppb |
2016-04-13 | 4417-004-1125 | ND |
2016-04-13 | 4417-008-1230 | ND |
2016-06-15 | 4417-001-0810 | ND |
2016-06-15 | 4417-002-0955 | ND |
2016-06-15 | 4417-003-0905 | ND |
2016-07-06 | 3761-801-1137 | 14.2 ppb |
2016-07-06 | 3761-802-1151 | 10.3 ppb |
2016-07-06 | 3761-803-1112 | 7.80 ppb |
2016-07-06 | 3761-804-1143 | 9.70 ppb |
2016-07-06 | 3761-805-1055 | 6.40 ppb |
2016-07-06 | 3761-806-1127 | 6.80 ppb |
2016-07-06 | 3761-807-1102 | 7.70 ppb |
2016-07-06 | 3761-808-1211 | 6.20 ppb |
2016-07-21 | 4417-004-0945 | ND |
2016-07-21 | 4417-007-0905 | ND |
2016-07-21 | 4417-008-1050 | ND |
2016-10-05 | 3761-801-1052 | 8.80 ppb |
2016-10-05 | 3761-802-1108 | 11.4 ppb |
2016-10-05 | 3761-803-1031 | 9.50 ppb |
2016-10-05 | 3761-804-1059 | 11.8 ppb |
2016-10-05 | 3761-805-1015 | 9.00 ppb |
2016-10-05 | 3761-806-1042 | 4.40 ppb |
2016-10-05 | 3761-807-1009 | 9.40 ppb |
2016-10-05 | 3761-808-1116 | 10.8 ppb |
2016-11-02 | 4417-004-0910 | ND |
2016-11-02 | 4417-008-0925 | ND |
2017-01-03 | 3761-801-1054 | ND |
2017-01-03 | 3761-802-1110 | 5.80 ppb |
2017-01-03 | 3761-803-1033 | 6.00 ppb |
2017-01-03 | 3761-804-1101 | 5.00 ppb |
2017-01-03 | 3761-805-1018 | 6.90 ppb |
2017-01-03 | 3761-806-1041 | 3.90 ppb |
2017-01-03 | 3761-807-1025 | 4.10 ppb |
2017-01-03 | 3761-808-1122 | 4.80 ppb |
2017-01-18 | 4417-006-0850 | ND |
2017-01-18 | 4417-008-1010 | ND |
2017-01-18 | 4417-011-0830 | ND |
2017-01-18 | 4417-020-0905 | ND |
2017-01-18 | 4417-023-0800 | ND |
2017-03-01 | 3761-024-1020 | ND |
2017-04-05 | 3761-801-1021 | 10.00 ppb |
2017-04-05 | 3761-802-1033 | 8.60 ppb |
2017-04-05 | 3761-803-1002 | 4.00 ppb |
2017-04-05 | 3761-804-1026 | 8.90 ppb |
2017-04-05 | 3761-805-0945 | 4.70 ppb |
2017-04-05 | 3761-806-1011 | 3.70 ppb |
2017-04-05 | 3761-807-0954 | 5.50 ppb |
2017-04-05 | 3761-808-1048 | 4.00 ppb |
2017-04-12 | 4417-003-0920 | ND |
2017-04-12 | 4417-004-0905 | ND |
2017-04-12 | 4417-006-0830 | ND |
2017-04-12 | 4417-006-0835 | ND |
2017-05-24 | 4417-008-0820 | ND |
2017-06-27 | 4417-001-0925 | ND |
2017-06-27 | 4417-007-0900 | ND |
2017-07-04 | 3761-801-0936 | 5.00 ppb |
2017-07-04 | 3761-802-0951 | 5.60 ppb |
2017-07-04 | 3761-803-0911 | 5.20 ppb |
2017-07-04 | 3761-804-0942 | 6.00 ppb |
2017-07-04 | 3761-805-0855 | 3.90 ppb |
2017-07-04 | 3761-806-0925 | 5.00 ppb |
2017-07-04 | 3761-807-0903 | 5.20 ppb |
2017-07-04 | 3761-808-1003 | 4.20 ppb |
2017-07-12 | 4417-004-0935 | ND |
2017-07-12 | 4417-023-0805 | ND |
2017-07-12 | 4417-024-0845 | 2.00 ppb |
2017-07-18 | 4417-008-1005 | ND |
2017-07-25 | 4417-024-0755 | ND |
2017-10-04 | 4417-002-1045 | ND |
2017-10-04 | 4417-004-1035 | ND |
2017-10-04 | 4417-008-1115 | ND |
2017-10-04 | 4417-024-0910 | ND |
2017-10-04 | 3761-801-1110 | 8.10 ppb |
2017-10-04 | 3761-802-1050 | 8.10 ppb |
2017-10-04 | 3761-803-1135 | 6.60 ppb |
2017-10-04 | 3761-804-1100 | 7.50 ppb |
2017-10-04 | 3761-805-1150 | 5.60 ppb |
2017-10-04 | 3761-806-1125 | 7.40 ppb |
2017-10-04 | 3761-807-1200 | 6.80 ppb |
2017-10-04 | 3761-808-1030 | 8.10 ppb |
2018-01-03 | 3761-801-1105 | 8.20 ppb |
2018-01-03 | 3761-802-1140 | 8.00 ppb |
2018-01-03 | 3761-803-1030 | 8.50 ppb |
2018-01-03 | 3761-804-1115 | 7.60 ppb |
2018-01-03 | 3761-805-1020 | 8.40 ppb |
2018-01-03 | 3761-806-1045 | 6.90 ppb |
2018-01-03 | 3761-807-1010 | 7.60 ppb |
2018-01-03 | 3761-808-1210 | 10.7 ppb |
2018-01-17 | 4417-006-1040 | ND |
2018-01-17 | 4417-008-1205 | ND |
2018-01-17 | 4417-011-1025 | ND |
2018-01-17 | 4417-020-1100 | ND |
2018-01-17 | 4417-023-1000 | ND |
2018-01-24 | 4417-004-0840 | ND |
2018-01-24 | 4417-024-0800 | ND |
2018-04-04 | 3761-801-1123 | 9.70 ppb |
2018-04-04 | 3761-802-1152 | 10.5 ppb |
2018-04-04 | 3761-803-1057 | 10.8 ppb |
2018-04-04 | 3761-804-1129 | 11.3 ppb |
2018-04-04 | 3761-805-1044 | 9.80 ppb |
2018-04-04 | 3761-806-1110 | 9.70 ppb |
2018-04-04 | 3761-807-1050 | 10.8 ppb |
2018-04-04 | 3761-808-1206 | 10.9 ppb |
2018-04-25 | 4417-001-1020 | ND |
2018-04-25 | 4417-002-1110 | ND |
2018-04-25 | 4417-003-0815 | ND |
2018-04-25 | 4417-004-0800 | ND |
2018-04-25 | 4417-007-0920 | ND |
2018-04-25 | 4417-008-0835 | ND |
2018-04-25 | 4417-024-0940 | ND |
2018-07-03 | 3761-801-1217 | 4.70 ppb |
2018-07-03 | 3761-802-1252 | 6.30 ppb |
2018-07-03 | 3761-803-1156 | 5.00 ppb |
2018-07-03 | 3761-804-1231 | 6.40 ppb |
2018-07-03 | 3761-805-1147 | 5.30 ppb |
2018-07-03 | 3761-806-1206 | 5.20 ppb |
2018-07-03 | 3761-807-1140 | 4.80 ppb |
2018-07-03 | 3761-808-1300 | 4.70 ppb |
2018-07-11 | 4417-008-0950 | ND |
2018-07-11 | 4417-024-0905 | ND |
2018-09-19 | 4417-004-0940 | ND |
2018-10-02 | 3761-801-1543 | 8.20 ppb |
2018-10-02 | 3761-802-1532 | 9.00 ppb |
2018-10-02 | 3761-803-1611 | 8.10 ppb |
2018-10-02 | 3761-804-1538 | 7.90 ppb |
2018-10-02 | 3761-805-1724 | 9.50 ppb |
2018-10-02 | 3761-806-1557 | 6.60 ppb |
2018-10-02 | 3761-807-1731 | 8.60 ppb |
2018-10-02 | 3761-808-1516 | 8.60 ppb |
2018-10-10 | 4417-004-1100 | ND |
2018-10-10 | 4417-008-1145 | ND |
2018-10-10 | 4417-024-0850 | ND |
2019-01-08 | 3761-801-1044 | 22.7 ppb |
2019-01-08 | 3761-802-1112 | 22.3 ppb |
2019-01-08 | 3761-803-1018 | 19.3 ppb |
2019-01-08 | 3761-804-1050 | 22.4 ppb |
2019-01-08 | 3761-805-0954 | 24.3 ppb |
2019-01-08 | 3761-806-1033 | 21.0 ppb |
2019-01-08 | 3761-807-1007 | 20.1 ppb |
2019-01-08 | 3761-808-1130 | 13.5 ppb |
2019-03-13 | 4417-001-0945 | ND |
2019-03-13 | 4417-002-0840 | ND |
2019-03-13 | 4417-006-0810 | ND |
2019-03-13 | 4417-007-1130 | ND |
2019-03-13 | 4417-008-0900 | ND |
2019-03-13 | 4417-020-0920 | ND |
2019-03-13 | 4417-024-1000 | ND |
2019-03-21 | 4417-023-0820 | ND |
2019-03-27 | 4417-011-0900 | ND |
2019-04-01 | 3761-801-1036 | 23.7 ppb |
2019-04-01 | 3761-802-1055 | 27.6 ppb |
2019-04-01 | 3761-803-1015 | 18.1 ppb |
2019-04-01 | 3761-804-1047 | 28.3 ppb |
2019-04-01 | 3761-805-0751 | 22.9 ppb |
2019-04-01 | 3761-806-1026 | 25.4 ppb |
2019-04-01 | 3761-807-1009 | 21.3 ppb |
2019-04-01 | 3761-808-1130 | 10.9 ppb |
2019-04-04 | 4417-003-1120 | ND |
2019-04-04 | 4417-008-1045 | ND |
2019-04-04 | 4417-024-0955 | ND |
2019-05-30 | 4417-004-1000 | ND |
2019-07-01 | 3761-801-1035 | 8.10 ppb |
2019-07-01 | 3761-802-1049 | 8.20 ppb |
2019-07-01 | 3761-803-1013 | 12.4 ppb |
2019-07-01 | 3761-804-1041 | 8.30 ppb |
2019-07-01 | 3761-805-0957 | 9.70 ppb |
2019-07-01 | 3761-806-1024 | 25.1 ppb |
2019-07-01 | 3761-807-1004 | 10.7 ppb |
2019-07-01 | 3761-808-1102 | 7.90 ppb |
2019-08-20 | 4417-004-1045 | ND |
2019-08-20 | 4417-008-1030 | ND |
2019-08-20 | 4417-024-0905 | ND |
2019-10-01 | 3761-801-1017 | 7.50 ppb |
2019-10-01 | 3761-802-0959 | 31.1 ppb |
2019-10-01 | 3761-803-1053 | 24.2 ppb |
2019-10-01 | 3761-804-1010 | 6.80 ppb |
2019-10-01 | 3761-805-1112 | 28.8 ppb |
2019-10-01 | 3761-806-0928 | 33.6 ppb |
2019-10-01 | 3761-807-1119 | 30.4 ppb |
2019-10-01 | 3761-808-0941 | 19.3 ppb |
2019-10-23 | 4417-004-1100 | ND |
2019-10-23 | 4417-008-1005 | ND |
2019-10-23 | 4417-024-0850 | ND |