Bromodichloromethane
City of Santa Barbara Water Department
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
250
Samples
0
Samples exceeding legal limit (MCL)
215
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 13.9 ppb | 38 | 35 | ND - 25.5 ppb |
| 2015 | 15.0 ppb | 36 | 33 | ND - 25.0 ppb |
| 2016 | 11.4 ppb | 42 | 37 | ND - 28.0 ppb |
| 2017 | 10.2 ppb | 44 | 41 | ND - 20.0 ppb |
| 2018 | 9.11 ppb | 44 | 35 | ND - 18.0 ppb |
| 2019 | 7.12 ppb | 46 | 34 | ND - 14.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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 |
|---|---|---|
| 2014-01-14 | 5867-004-0911 | 1.20 ppb |
| 2014-01-14 | 5867-054-0924 | 3.80 ppb |
| 2014-02-03 | 5867-044-1143 | 12.4 ppb |
| 2014-02-03 | 5867-045-1006 | 5.60 ppb |
| 2014-02-03 | 5867-046-1044 | 10.8 ppb |
| 2014-02-03 | 5867-047-1117 | 12.0 ppb |
| 2014-02-03 | 5867-048-1202 | 10.7 ppb |
| 2014-02-03 | 5867-049-1023 | 11.3 ppb |
| 2014-02-03 | 5867-050-1304 | 9.70 ppb |
| 2014-02-03 | 5867-051-1230 | 12.2 ppb |
| 2014-05-05 | 5867-044-1158 | 18.7 ppb |
| 2014-05-05 | 5867-045-0912 | 8.30 ppb |
| 2014-05-05 | 5867-046-0956 | 14.5 ppb |
| 2014-05-05 | 5867-047-1022 | 14.7 ppb |
| 2014-05-05 | 5867-048-1217 | 13.8 ppb |
| 2014-05-05 | 5867-049-0932 | 13.9 ppb |
| 2014-05-05 | 5867-050-0820 | 15.7 ppb |
| 2014-05-05 | 5867-051-0847 | 14.4 ppb |
| 2014-08-04 | 5867-044-0941 | 23.8 ppb |
| 2014-08-04 | 5867-045-0818 | 14.5 ppb |
| 2014-08-04 | 5867-046-0857 | 23.0 ppb |
| 2014-08-04 | 5867-047-0921 | 22.8 ppb |
| 2014-08-04 | 5867-048-0956 | 22.8 ppb |
| 2014-08-04 | 5867-049-0836 | 20.6 ppb |
| 2014-08-04 | 5867-050-1043 | 23.1 ppb |
| 2014-08-04 | 5867-051-0759 | 18.8 ppb |
| 2014-10-21 | 9590-015-0843 | ND |
| 2014-10-21 | 9590-035-0931 | ND |
| 2014-10-21 | 9590-042-0758 | ND |
| 2014-10-22 | 9590-004-1014 | 1.50 ppb |
| 2014-11-04 | 5867-044-1052 | 25.5 ppb |
| 2014-11-04 | 5867-045-0844 | 11.9 ppb |
| 2014-11-04 | 5867-046-1001 | 17.9 ppb |
| 2014-11-04 | 5867-047-1026 | 20.9 ppb |
| 2014-11-04 | 5867-048-1110 | 21.5 ppb |
| 2014-11-04 | 5867-049-0940 | 21.8 ppb |
| 2014-11-04 | 5867-050-0914 | 14.4 ppb |
| 2014-11-04 | 5867-051-0818 | 18.6 ppb |
| 2015-02-02 | 5867-044-0924 | 22.9 ppb |
| 2015-02-02 | 5867-045-0947 | 4.60 ppb |
| 2015-02-02 | 5867-046-1010 | 14.0 ppb |
| 2015-02-02 | 5867-047-1043 | 16.9 ppb |
| 2015-02-02 | 5867-048-1058 | 17.4 ppb |
| 2015-02-02 | 5867-049-1150 | 14.7 ppb |
| 2015-02-02 | 5867-050-0906 | 10.1 ppb |
| 2015-02-02 | 5867-051-1129 | 10.8 ppb |
| 2015-05-04 | 9590-044-1107 | 25.0 ppb |
| 2015-05-04 | 9590-045-0945 | 16.0 ppb |
| 2015-05-04 | 9590-046-1025 | 17.0 ppb |
| 2015-05-04 | 9590-047-1049 | 17.0 ppb |
| 2015-05-04 | 9590-048-1121 | 18.0 ppb |
| 2015-05-04 | 9590-049-1006 | 16.0 ppb |
| 2015-05-04 | 9590-050-1210 | 13.0 ppb |
| 2015-05-04 | 9590-051-1148 | 16.0 ppb |
| 2015-05-12 | 9590-055-0842 | ND |
| 2015-08-03 | 9590-044-0745 | 17.0 ppb |
| 2015-08-03 | 9590-045-0940 | 18.0 ppb |
| 2015-08-03 | 9590-046-0912 | 19.0 ppb |
| 2015-08-03 | 9590-047-0852 | 24.0 ppb |
| 2015-08-03 | 9590-048-0810 | 21.0 ppb |
| 2015-08-03 | 9590-049-0830 | 19.0 ppb |
| 2015-08-03 | 9590-050-1010 | 17.0 ppb |
| 2015-08-03 | 9590-051-1033 | 16.0 ppb |
| 2015-10-21 | 9590-004-0947 | ND |
| 2015-10-21 | 9590-054-1002 | 4.00 ppb |
| 2015-11-02 | 9590-044-1055 | 19.0 ppb |
| 2015-11-02 | 9590-045-1158 | 2.50 ppb |
| 2015-11-02 | 9590-046-1005 | 22.0 ppb |
| 2015-11-02 | 9590-047-1029 | 22.0 ppb |
| 2015-11-02 | 9590-048-1108 | 22.0 ppb |
| 2015-11-02 | 9590-049-0946 | 21.0 ppb |
| 2015-11-02 | 9590-050-0858 | 18.0 ppb |
| 2015-11-02 | 9590-051-1137 | 9.00 ppb |
| 2015-11-10 | 9590-005-1050 | ND |
| 2016-01-12 | 9590-004-0856 | ND |
| 2016-01-12 | 9590-054-0910 | 3.40 ppb |
| 2016-02-01 | 9590-044-1126 | 13.0 ppb |
| 2016-02-01 | 9590-045-1008 | 5.00 ppb |
| 2016-02-01 | 9590-046-1048 | 14.0 ppb |
| 2016-02-01 | 9590-047-1105 | 16.0 ppb |
| 2016-02-01 | 9590-048-1141 | 13.0 ppb |
| 2016-02-01 | 9590-049-1026 | 11.0 ppb |
| 2016-02-01 | 9590-050-1227 | 8.20 ppb |
| 2016-02-01 | 9590-051-1250 | 10.00 ppb |
| 2016-04-06 | 9590-004-0828 | ND |
| 2016-04-06 | 9590-054-0846 | 3.60 ppb |
| 2016-05-02 | 9590-044-1201 | 15.0 ppb |
| 2016-05-02 | 9590-045-1031 | ND |
| 2016-05-02 | 9590-046-1111 | 14.0 ppb |
| 2016-05-02 | 9590-047-1136 | 17.0 ppb |
| 2016-05-02 | 9590-048-1213 | 14.0 ppb |
| 2016-05-02 | 9590-049-1051 | 14.0 ppb |
| 2016-05-02 | 9590-050-1255 | 13.0 ppb |
| 2016-05-02 | 9590-051-1005 | 9.10 ppb |
| 2016-07-12 | 9590-004-0835 | 1.60 ppb |
| 2016-07-12 | 9590-054-0845 | 7.80 ppb |
| 2016-08-01 | 9590-044-1021 | 22.0 ppb |
| 2016-08-01 | 9590-045-1055 | 16.0 ppb |
| 2016-08-01 | 9590-046-0932 | 27.0 ppb |
| 2016-08-01 | 9590-047-0956 | 28.0 ppb |
| 2016-08-01 | 9590-048-1034 | 27.0 ppb |
| 2016-08-01 | 9590-049-0913 | 27.0 ppb |
| 2016-08-01 | 9590-050-1118 | 18.0 ppb |
| 2016-08-01 | 9590-051-1143 | 18.0 ppb |
| 2016-10-12 | 9590-004-1023 | 1.20 ppb |
| 2016-10-12 | 9590-054-1120 | 5.20 ppb |
| 2016-11-02 | 9590-031-1120 | ND |
| 2016-11-02 | 9590-053-1152 | ND |
| 2016-11-07 | 9590-044-1202 | 12.0 ppb |
| 2016-11-07 | 9590-045-1240 | 9.60 ppb |
| 2016-11-07 | 9590-046-1119 | 11.0 ppb |
| 2016-11-07 | 9590-047-1142 | 11.0 ppb |
| 2016-11-07 | 9590-048-1218 | 14.0 ppb |
| 2016-11-07 | 9590-049-0926 | 12.0 ppb |
| 2016-11-07 | 9590-050-1307 | 13.0 ppb |
| 2016-11-07 | 9590-051-0906 | 2.40 ppb |
| 2017-01-11 | 9590-004-1034 | 1.60 ppb |
| 2017-01-11 | 9590-054-1043 | 4.50 ppb |
| 2017-02-06 | 9590-044-0947 | 7.80 ppb |
| 2017-02-06 | 9590-045-1057 | 2.90 ppb |
| 2017-02-06 | 9590-046-0844 | 7.30 ppb |
| 2017-02-06 | 9590-047-0923 | 8.60 ppb |
| 2017-02-06 | 9590-048-1034 | 8.80 ppb |
| 2017-02-06 | 9590-049-0818 | 8.20 ppb |
| 2017-02-06 | 9590-050-1123 | 7.40 ppb |
| 2017-02-06 | 9590-051-1013 | 3.00 ppb |
| 2017-04-05 | 9590-004-0946 | 3.00 ppb |
| 2017-04-05 | 9590-054-0956 | 10.00 ppb |
| 2017-05-01 | 9590-044-1239 | 17.0 ppb |
| 2017-05-01 | 9590-045-1014 | 15.0 ppb |
| 2017-05-01 | 9590-046-1127 | 14.0 ppb |
| 2017-05-01 | 9590-047-1202 | 14.0 ppb |
| 2017-05-01 | 9590-048-1300 | 19.0 ppb |
| 2017-05-01 | 9590-049-1048 | 18.0 ppb |
| 2017-05-01 | 9590-050-1352 | 20.0 ppb |
| 2017-05-01 | 9590-051-0910 | 16.0 ppb |
| 2017-05-18 | 9590-058-1734 | ND |
| 2017-07-19 | 9590-004-0933 | 2.90 ppb |
| 2017-07-19 | 9590-054-0945 | 8.00 ppb |
| 2017-08-07 | 9590-044-1225 | 13.0 ppb |
| 2017-08-07 | 9590-045-1049 | 12.0 ppb |
| 2017-08-07 | 9590-046-1131 | 12.0 ppb |
| 2017-08-07 | 9590-047-1200 | 16.0 ppb |
| 2017-08-07 | 9590-048-1242 | 17.0 ppb |
| 2017-08-07 | 9590-049-1108 | 15.0 ppb |
| 2017-08-07 | 9590-050-1330 | 13.0 ppb |
| 2017-08-07 | 9590-051-1306 | 12.0 ppb |
| 2017-10-04 | 9590-004-1124 | 2.00 ppb |
| 2017-10-04 | 9590-054-1140 | 6.30 ppb |
| 2017-11-06 | 9590-044-1235 | 14.0 ppb |
| 2017-11-06 | 9590-045-0937 | 12.0 ppb |
| 2017-11-06 | 9590-046-1139 | 12.0 ppb |
| 2017-11-06 | 9590-047-1213 | 16.0 ppb |
| 2017-11-06 | 9590-048-1304 | 15.0 ppb |
| 2017-11-06 | 9590-049-1101 | 15.0 ppb |
| 2017-11-06 | 9590-050-1218 | 15.0 ppb |
| 2017-11-06 | 9590-051-1300 | 14.0 ppb |
| 2017-11-07 | 9590-004-0955 | 1.10 ppb |
| 2017-11-14 | 9590-035-0930 | ND |
| 2017-11-14 | 9590-042-0848 | ND |
| 2018-01-09 | 9590-004-1100 | 1.50 ppb |
| 2018-01-09 | 9590-054-1120 | 7.60 ppb |
| 2018-02-05 | 9590-044-1127 | 13.0 ppb |
| 2018-02-05 | 9590-045-1220 | ND |
| 2018-02-05 | 9590-046-1019 | 11.0 ppb |
| 2018-02-05 | 9590-047-1053 | 12.0 ppb |
| 2018-02-05 | 9590-048-1140 | 13.0 ppb |
| 2018-02-05 | 9590-049-0932 | 12.0 ppb |
| 2018-02-05 | 9590-050-1501 | 14.0 ppb |
| 2018-02-05 | 9590-051-1201 | ND |
| 2018-05-07 | 9590-044-0917 | 12.0 ppb |
| 2018-05-07 | 9590-045-0940 | 11.0 ppb |
| 2018-05-07 | 9590-046-1011 | 13.0 ppb |
| 2018-05-07 | 9590-047-1032 | 12.0 ppb |
| 2018-05-07 | 9590-048-1050 | 14.0 ppb |
| 2018-05-07 | 9590-049-1111 | 12.0 ppb |
| 2018-05-07 | 9590-050-1156 | 16.0 ppb |
| 2018-05-07 | 9590-051-1133 | 15.0 ppb |
| 2018-05-09 | 9590-004-0905 | 1.70 ppb |
| 2018-05-09 | 9590-054-0912 | 6.60 ppb |
| 2018-07-30 | 9590-058-0815 | ND |
| 2018-08-06 | 9590-044-1139 | 17.0 ppb |
| 2018-08-06 | 9590-045-0932 | ND |
| 2018-08-06 | 9590-046-1047 | 16.0 ppb |
| 2018-08-06 | 9590-047-1113 | 16.0 ppb |
| 2018-08-06 | 9590-048-1202 | 18.0 ppb |
| 2018-08-06 | 9590-049-1023 | 15.0 ppb |
| 2018-08-06 | 9590-050-0853 | 2.30 ppb |
| 2018-08-06 | 9590-051-0815 | ND |
| 2018-08-15 | 9590-004-1052 | 7.10 ppb |
| 2018-08-15 | 9590-054-1104 | 12.0 ppb |
| 2018-09-25 | 9590-015-0947 | ND |
| 2018-09-25 | 9590-055-1120 | ND |
| 2018-09-26 | 9590-004-1131 | 1.60 ppb |
| 2018-11-05 | 9590-044-0849 | 14.0 ppb |
| 2018-11-05 | 9590-045-0955 | ND |
| 2018-11-05 | 9590-046-0755 | 18.0 ppb |
| 2018-11-05 | 9590-047-0827 | 14.0 ppb |
| 2018-11-05 | 9590-048-0908 | 16.0 ppb |
| 2018-11-05 | 9590-049-0732 | 16.0 ppb |
| 2018-11-05 | 9590-050-1018 | 14.0 ppb |
| 2018-11-05 | 9590-051-0932 | ND |
| 2018-11-14 | 9590-004-0932 | 1.000 ppb |
| 2018-11-14 | 9590-054-0945 | 5.60 ppb |
| 2019-02-04 | 9590-044-0758 | 9.30 ppb |
| 2019-02-04 | 9590-045-1007 | ND |
| 2019-02-04 | 9590-046-1041 | 8.80 ppb |
| 2019-02-04 | 9590-047-1128 | 10.00 ppb |
| 2019-02-04 | 9590-048-0847 | 13.0 ppb |
| 2019-02-04 | 9590-049-0932 | 11.0 ppb |
| 2019-02-04 | 9590-050-1148 | 10.00 ppb |
| 2019-02-04 | 9590-051-0926 | ND |
| 2019-02-05 | 9590-004-1049 | ND |
| 2019-02-05 | 9590-054-1110 | 4.80 ppb |
| 2019-05-06 | 9590-044-0831 | 9.10 ppb |
| 2019-05-06 | 9590-045-1007 | ND |
| 2019-05-06 | 9590-046-1122 | 8.30 ppb |
| 2019-05-06 | 9590-047-1210 | 6.30 ppb |
| 2019-05-06 | 9590-048-0859 | 10.00 ppb |
| 2019-05-06 | 9590-049-1025 | 10.00 ppb |
| 2019-05-06 | 9590-050-1151 | 10.00 ppb |
| 2019-05-06 | 9590-051-0748 | ND |
| 2019-05-07 | 9590-004-0905 | 1.10 ppb |
| 2019-05-07 | 9590-054-0915 | 4.30 ppb |
| 2019-07-10 | 9590-004-0942 | 1.40 ppb |
| 2019-07-10 | 9590-054-0957 | 5.00 ppb |
| 2019-07-17 | 9590-058-1324 | ND |
| 2019-08-05 | 9590-044-0839 | 13.0 ppb |
| 2019-08-05 | 9590-045-0953 | 10.00 ppb |
| 2019-08-05 | 9590-046-1015 | 11.0 ppb |
| 2019-08-05 | 9590-047-1107 | 13.0 ppb |
| 2019-08-05 | 9590-048-0859 | 13.0 ppb |
| 2019-08-05 | 9590-049-0907 | 13.0 ppb |
| 2019-08-05 | 9590-050-1133 | 14.0 ppb |
| 2019-08-05 | 9590-051-0925 | 14.0 ppb |
| 2019-09-04 | 9590-058-1240 | ND |
| 2019-10-07 | 9590-004-0942 | 1.10 ppb |
| 2019-10-07 | 9590-054-0957 | 5.00 ppb |
| 2019-10-08 | 9590-058-1128 | ND |
| 2019-10-29 | 9590-004-1034 | ND |
| 2019-10-29 | 9590-031-0904 | ND |
| 2019-11-04 | 9590-044-0824 | 13.0 ppb |
| 2019-11-04 | 9590-045-1055 | 11.0 ppb |
| 2019-11-04 | 9590-046-0943 | 12.0 ppb |
| 2019-11-04 | 9590-047-0910 | 12.0 ppb |
| 2019-11-04 | 9590-048-0802 | 14.0 ppb |
| 2019-11-04 | 9590-049-1033 | 12.0 ppb |
| 2019-11-04 | 9590-050-1139 | 14.0 ppb |
| 2019-11-04 | 9590-051-0728 | ND |
| 2019-12-05 | 9590-053-1403 | ND |