Bromodichloromethane
City of Santa Ana
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 3.56 ppb | 63 | 24 | ND - 13.8 ppb |
2015 | 3.88 ppb | 59 | 22 | ND - 14.4 ppb |
2016 | 2.48 ppb | 68 | 21 | ND - 16.7 ppb |
2017 | 3.31 ppb | 60 | 30 | ND - 12.7 ppb |
2018 | 2.50 ppb | 60 | 26 | ND - 9.10 ppb |
2019 | 2.05 ppb | 81 | 36 | ND - 12.1 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 |
---|---|---|
2014-02-18 | 4417-018-1055 | ND |
2014-02-18 | 4417-019-1215 | ND |
2014-02-18 | 4417-021-0820 | ND |
2014-02-18 | 4417-022-0905 | ND |
2014-02-18 | 4417-027-1400 | ND |
2014-02-18 | 4417-028-1415 | ND |
2014-02-18 | 4417-029-1030 | ND |
2014-02-18 | 4417-030-0845 | ND |
2014-02-18 | 4417-033-1010 | ND |
2014-02-18 | 4417-034-1520 | ND |
2014-02-18 | 4417-037-1255 | ND |
2014-02-18 | 4417-038-0730 | ND |
2014-02-18 | 4417-039-1335 | ND |
2014-02-18 | 4417-061-1230 | ND |
2014-02-18 | 4417-073-1435 | ND |
2014-02-18 | 4417-074-0940 | ND |
2014-03-11 | 4417-025-0815 | ND |
2014-03-11 | 4417-031-0855 | ND |
2014-03-12 | 3761-801-0846 | 13.8 ppb |
2014-03-12 | 3761-802-0942 | 10.9 ppb |
2014-03-12 | 3761-803-1009 | 9.90 ppb |
2014-03-12 | 3761-804-1022 | 10.2 ppb |
2014-03-12 | 3761-805-1042 | 9.70 ppb |
2014-03-12 | 3761-806-1055 | ND |
2014-03-12 | 3761-807-1106 | 1.60 ppb |
2014-03-12 | 3761-808-1127 | ND |
2014-05-20 | 4417-018-1015 | ND |
2014-05-20 | 4417-019-0835 | ND |
2014-05-20 | 4417-025-0810 | ND |
2014-05-20 | 4417-074-1005 | ND |
2014-06-12 | 3761-801-0831 | 8.30 ppb |
2014-06-12 | 3761-802-0946 | 11.9 ppb |
2014-06-12 | 3761-803-1021 | 11.3 ppb |
2014-06-12 | 3761-804-1031 | 12.2 ppb |
2014-06-12 | 3761-805-1056 | 10.8 ppb |
2014-06-12 | 3761-806-1116 | 10.3 ppb |
2014-06-12 | 3761-807-1131 | 10.9 ppb |
2014-06-12 | 3761-808-1225 | ND |
2014-08-12 | 3761-801-0826 | 11.8 ppb |
2014-08-12 | 3761-802-0856 | 12.2 ppb |
2014-08-12 | 3761-803-0936 | 11.1 ppb |
2014-08-12 | 3761-804-0946 | 12.7 ppb |
2014-08-12 | 3761-805-1216 | 11.5 ppb |
2014-08-12 | 3761-806-1226 | 1.60 ppb |
2014-08-12 | 3761-807-1241 | 1.50 ppb |
2014-08-12 | 3761-808-1301 | ND |
2014-08-20 | 4417-018-0915 | ND |
2014-08-20 | 4417-019-0645 | ND |
2014-08-20 | 4417-025-0725 | ND |
2014-08-20 | 4417-035-0710 | ND |
2014-08-20 | 4417-074-0925 | ND |
2014-11-13 | 4417-018-0900 | ND |
2014-11-13 | 4417-019-0840 | ND |
2014-11-13 | 4417-025-0820 | ND |
2014-12-15 | 3761-801-0856 | 10.5 ppb |
2014-12-15 | 3761-802-0926 | 8.70 ppb |
2014-12-15 | 3761-803-0951 | ND |
2014-12-15 | 3761-804-1001 | ND |
2014-12-15 | 3761-805-1026 | 9.50 ppb |
2014-12-15 | 3761-806-1041 | ND |
2014-12-15 | 3761-807-1051 | 1.50 ppb |
2014-12-15 | 3761-808-1126 | ND |
2014-12-18 | 4417-026-0800 | ND |
2015-02-24 | 4417-018-1110 | ND |
2015-02-24 | 4417-019-0840 | ND |
2015-02-24 | 4417-028-0905 | ND |
2015-02-24 | 4417-029-1145 | ND |
2015-02-24 | 4417-031-0950 | ND |
2015-02-24 | 4417-033-1135 | ND |
2015-02-24 | 4417-034-1215 | ND |
2015-02-24 | 4417-037-0810 | ND |
2015-02-24 | 4417-038-0735 | ND |
2015-02-24 | 4417-039-1020 | ND |
2015-02-24 | 4417-073-0940 | ND |
2015-03-12 | 3761-801-0916 | 10.1 ppb |
2015-03-12 | 3761-802-0951 | 8.10 ppb |
2015-03-12 | 3761-803-1031 | 6.60 ppb |
2015-03-12 | 3761-804-1041 | 7.60 ppb |
2015-03-12 | 3761-805-1101 | 8.50 ppb |
2015-03-12 | 3761-806-1116 | ND |
2015-03-12 | 3761-807-1126 | ND |
2015-03-12 | 3761-808-1146 | 3.10 ppb |
2015-03-18 | 4417-025-0745 | ND |
2015-03-18 | 4417-061-0805 | ND |
2015-05-19 | 4417-019-0840 | ND |
2015-05-19 | 4417-021-0705 | ND |
2015-05-19 | 4417-022-0735 | ND |
2015-05-19 | 4417-025-0805 | ND |
2015-05-19 | 4417-026-1010 | ND |
2015-05-19 | 4417-030-0720 | ND |
2015-05-19 | 4417-074-1050 | ND |
2015-06-12 | 3761-801-0820 | 14.4 ppb |
2015-06-12 | 3761-802-0900 | 12.5 ppb |
2015-06-12 | 3761-803-0920 | 12.3 ppb |
2015-06-12 | 3761-804-1015 | 11.9 ppb |
2015-06-12 | 3761-805-1055 | 12.5 ppb |
2015-06-12 | 3761-806-1120 | ND |
2015-06-12 | 3761-807-1145 | ND |
2015-06-12 | 3761-808-1215 | 5.60 ppb |
2015-06-16 | 4417-027-0635 | ND |
2015-08-12 | 4417-018-0625 | ND |
2015-08-12 | 4417-019-0525 | ND |
2015-08-12 | 4417-025-0510 | ND |
2015-08-12 | 4417-035-0540 | ND |
2015-08-12 | 3761-801-0900 | 12.3 ppb |
2015-08-12 | 3761-802-0930 | 14.1 ppb |
2015-08-12 | 3761-803-1050 | 14.1 ppb |
2015-08-12 | 3761-804-1055 | 13.6 ppb |
2015-08-12 | 3761-805-1120 | 10.8 ppb |
2015-08-12 | 3761-806-1135 | 11.5 ppb |
2015-08-12 | 3761-807-1145 | 11.2 ppb |
2015-08-12 | 3761-808-1220 | ND |
2015-11-17 | 4417-019-0840 | ND |
2015-11-17 | 4417-025-0820 | ND |
2015-12-08 | 3761-801-0856 | 8.10 ppb |
2015-12-08 | 3761-802-0921 | 11.4 ppb |
2015-12-08 | 3761-803-0931 | ND |
2015-12-08 | 3761-804-0941 | ND |
2015-12-08 | 3761-805-1001 | 8.80 ppb |
2015-12-08 | 3761-806-1016 | ND |
2015-12-08 | 3761-807-1031 | ND |
2015-12-08 | 3761-808-1056 | ND |
2016-02-16 | 4417-019-0910 | ND |
2016-02-16 | 4417-025-0855 | ND |
2016-02-16 | 4417-026-1110 | ND |
2016-02-16 | 4417-027-1000 | ND |
2016-02-16 | 4417-028-0950 | ND |
2016-02-16 | 4417-031-1045 | ND |
2016-02-16 | 4417-033-1220 | ND |
2016-02-16 | 4417-034-1135 | ND |
2016-02-16 | 4417-037-0835 | ND |
2016-02-16 | 4417-038-0750 | ND |
2016-02-16 | 4417-039-1025 | ND |
2016-02-16 | 4417-061-0915 | ND |
2016-02-16 | 4417-073-1245 | ND |
2016-03-07 | 4417-029-0810 | ND |
2016-03-08 | 3761-801-1045 | 7.20 ppb |
2016-03-08 | 3761-802-0820 | 5.80 ppb |
2016-03-08 | 3761-803-0955 | ND |
2016-03-08 | 3761-804-0940 | ND |
2016-03-08 | 3761-805-1120 | 7.10 ppb |
2016-03-08 | 3761-806-1135 | ND |
2016-03-08 | 3761-807-1105 | 2.30 ppb |
2016-03-08 | 3761-808-1010 | ND |
2016-05-24 | 4417-019-0945 | ND |
2016-05-24 | 4417-021-0820 | ND |
2016-05-24 | 4417-022-0905 | ND |
2016-05-24 | 4417-025-0925 | ND |
2016-05-24 | 4417-030-0840 | ND |
2016-05-24 | 4417-074-1155 | ND |
2016-06-15 | 3761-801-0830 | 6.60 ppb |
2016-06-15 | 3761-802-0900 | 9.90 ppb |
2016-06-15 | 3761-803-0930 | 11.1 ppb |
2016-06-15 | 3761-804-0940 | 9.50 ppb |
2016-06-15 | 3761-805-1000 | 7.40 ppb |
2016-06-15 | 3761-806-1010 | ND |
2016-06-15 | 3761-807-1030 | ND |
2016-06-15 | 3761-808-1100 | 1.60 ppb |
2016-07-07 | 4417-025-0630 | ND |
2016-07-07 | 4417-025-0640 | ND |
2016-07-07 | 4417-030-0600 | ND |
2016-07-07 | 4417-030-0605 | ND |
2016-08-03 | 4417-018-0800 | ND |
2016-08-03 | 4417-019-0915 | ND |
2016-08-03 | 4417-028-0955 | ND |
2016-08-03 | 4417-033-1100 | ND |
2016-08-03 | 4417-034-0710 | ND |
2016-08-03 | 4417-035-0830 | ND |
2016-08-03 | 4417-037-0845 | ND |
2016-08-03 | 4417-038-1025 | ND |
2016-08-11 | 3761-801-1145 | 7.20 ppb |
2016-08-11 | 3761-802-1050 | 14.0 ppb |
2016-08-11 | 3761-803-0910 | 14.7 ppb |
2016-08-11 | 3761-804-1030 | 16.7 ppb |
2016-08-11 | 3761-805-1110 | 7.10 ppb |
2016-08-11 | 3761-806-1120 | 6.80 ppb |
2016-08-11 | 3761-807-1130 | 7.70 ppb |
2016-08-11 | 3761-808-0930 | 4.30 ppb |
2016-10-31 | 4417-018-0805 | ND |
2016-10-31 | 4417-019-0825 | ND |
2016-10-31 | 4417-025-0835 | ND |
2016-10-31 | 4417-033-0915 | ND |
2016-12-13 | 3761-801-1035 | 7.10 ppb |
2016-12-13 | 3761-802-0850 | 6.60 ppb |
2016-12-13 | 3761-803-0955 | ND |
2016-12-13 | 3761-804-0925 | 7.80 ppb |
2016-12-13 | 3761-805-1100 | ND |
2016-12-13 | 3761-806-1130 | ND |
2016-12-13 | 3761-807-1050 | ND |
2016-12-13 | 3761-808-1010 | ND |
2017-02-27 | 4417-019-0815 | ND |
2017-02-27 | 4417-025-0850 | ND |
2017-02-27 | 4417-026-1025 | ND |
2017-02-27 | 4417-027-0920 | ND |
2017-02-27 | 4417-031-1005 | ND |
2017-02-27 | 4417-039-0945 | ND |
2017-02-27 | 4417-061-0835 | ND |
2017-03-14 | 3761-801-0950 | 7.90 ppb |
2017-03-14 | 3761-802-1020 | 10.1 ppb |
2017-03-14 | 3761-803-1040 | 2.00 ppb |
2017-03-14 | 3761-804-1050 | 3.30 ppb |
2017-03-14 | 3761-805-1115 | 9.10 ppb |
2017-03-14 | 3761-806-1125 | 8.80 ppb |
2017-03-14 | 3761-807-1135 | 7.70 ppb |
2017-03-14 | 3761-808-1155 | ND |
2017-05-16 | 4417-019-0950 | ND |
2017-05-16 | 4417-021-1140 | ND |
2017-05-16 | 4417-022-1205 | ND |
2017-05-16 | 4417-025-0830 | ND |
2017-05-16 | 4417-028-0915 | ND |
2017-05-16 | 4417-030-1150 | ND |
2017-05-16 | 4417-031-1040 | ND |
2017-05-16 | 4417-034-0750 | ND |
2017-05-16 | 4417-035-0940 | ND |
2017-05-16 | 4417-037-1230 | ND |
2017-05-16 | 4417-038-1115 | ND |
2017-05-16 | 4417-074-1020 | ND |
2017-06-01 | 4417-073-0915 | ND |
2017-06-14 | 3761-801-0750 | 4.70 ppb |
2017-06-14 | 3761-802-0830 | 12.7 ppb |
2017-06-14 | 3761-803-0950 | 10.1 ppb |
2017-06-14 | 3761-804-1000 | 9.30 ppb |
2017-06-14 | 3761-805-1025 | 6.10 ppb |
2017-06-14 | 3761-806-1045 | 4.30 ppb |
2017-06-14 | 3761-807-1055 | 5.40 ppb |
2017-06-14 | 3761-808-1115 | 1.50 ppb |
2017-08-08 | 4417-019-0610 | ND |
2017-08-08 | 4417-025-0635 | ND |
2017-08-08 | 4417-073-0715 | ND |
2017-08-08 | 4417-073-0725 | 1.10 ppb |
2017-08-15 | 3761-801-0825 | 10.3 ppb |
2017-08-15 | 3761-802-0845 | 7.60 ppb |
2017-08-15 | 3761-803-0935 | 8.70 ppb |
2017-08-15 | 3761-804-0950 | 9.40 ppb |
2017-08-15 | 3761-805-1020 | 5.90 ppb |
2017-08-15 | 3761-806-1030 | 5.70 ppb |
2017-08-15 | 3761-807-1040 | 6.20 ppb |
2017-08-15 | 3761-808-1100 | ND |
2017-09-19 | 4417-073-1100 | ND |
2017-09-19 | 4417-073-1110 | ND |
2017-11-14 | 4417-019-0930 | ND |
2017-11-14 | 4417-025-0855 | ND |
2017-12-12 | 3761-801-0920 | 6.20 ppb |
2017-12-12 | 3761-802-1000 | 5.90 ppb |
2017-12-12 | 3761-803-1018 | 5.40 ppb |
2017-12-12 | 3761-804-1030 | 6.00 ppb |
2017-12-12 | 3761-805-1056 | 5.70 ppb |
2017-12-12 | 3761-806-1114 | 5.80 ppb |
2017-12-12 | 3761-807-1125 | 5.70 ppb |
2017-12-12 | 3761-808-1153 | ND |
2018-02-21 | 4417-019-0700 | ND |
2018-02-21 | 4417-025-0630 | ND |
2018-02-21 | 4417-026-0950 | ND |
2018-02-21 | 4417-027-0750 | ND |
2018-02-21 | 4417-039-0830 | ND |
2018-02-21 | 4417-061-0725 | ND |
2018-03-13 | 3761-801-1110 | 5.70 ppb |
2018-03-13 | 3761-802-0900 | 5.50 ppb |
2018-03-13 | 3761-803-1240 | ND |
2018-03-13 | 3761-804-1212 | ND |
2018-03-13 | 3761-805-1120 | 5.80 ppb |
2018-03-13 | 3761-806-1135 | ND |
2018-03-13 | 3761-807-1140 | 3.20 ppb |
2018-03-13 | 3761-808-1225 | ND |
2018-04-26 | 4417-035-0815 | ND |
2018-05-15 | 4417-019-0845 | ND |
2018-05-15 | 4417-021-0750 | ND |
2018-05-15 | 4417-022-1240 | ND |
2018-05-15 | 4417-025-1050 | ND |
2018-05-15 | 4417-028-0920 | ND |
2018-05-15 | 4417-031-0950 | ND |
2018-05-15 | 4417-034-1215 | ND |
2018-05-15 | 4417-037-0815 | ND |
2018-05-15 | 4417-074-1015 | ND |
2018-06-12 | 3761-801-0850 | 5.80 ppb |
2018-06-12 | 3761-802-0935 | 9.10 ppb |
2018-06-12 | 3761-803-1000 | 7.80 ppb |
2018-06-12 | 3761-804-1012 | 8.40 ppb |
2018-06-12 | 3761-805-1035 | 7.20 ppb |
2018-06-12 | 3761-806-1052 | 7.10 ppb |
2018-06-12 | 3761-807-1105 | 7.20 ppb |
2018-06-12 | 3761-808-1133 | 1.000 ppb |
2018-06-20 | 4417-030-0815 | ND |
2018-08-14 | 3761-801-0845 | 5.50 ppb |
2018-08-14 | 3761-802-0920 | 8.00 ppb |
2018-08-14 | 3761-803-0945 | 7.00 ppb |
2018-08-14 | 3761-804-0955 | 4.60 ppb |
2018-08-14 | 3761-805-1015 | 7.40 ppb |
2018-08-14 | 3761-806-1028 | 7.50 ppb |
2018-08-14 | 3761-807-1039 | 7.60 ppb |
2018-08-14 | 3761-808-1104 | ND |
2018-08-21 | 4417-019-0635 | ND |
2018-08-21 | 4417-025-0655 | ND |
2018-10-11 | 4417-038-0800 | ND |
2018-11-06 | 4417-019-1105 | ND |
2018-11-06 | 4417-025-1050 | ND |
2018-11-06 | 4417-038-1025 | ND |
2018-11-06 | 4417-038-1035 | ND |
2018-11-13 | 3761-801-0445 | 7.60 ppb |
2018-11-13 | 3761-802-0505 | 6.90 ppb |
2018-11-13 | 3761-803-0525 | ND |
2018-11-13 | 3761-804-0540 | ND |
2018-11-13 | 3761-805-0600 | 7.20 ppb |
2018-11-13 | 3761-806-0615 | 1.20 ppb |
2018-11-13 | 3761-807-0625 | 1.90 ppb |
2018-11-13 | 3761-808-0645 | ND |
2018-11-13 | 3761-809-0710 | 2.50 ppb |
2018-11-13 | 3761-810-0730 | ND |
2018-11-13 | 3761-811-0750 | ND |
2018-11-13 | 3761-812-0805 | 1.000 ppb |
2019-02-12 | 3761-801-0825 | 6.30 ppb |
2019-02-12 | 3761-802-1110 | 6.90 ppb |
2019-02-12 | 3761-803-1400 | ND |
2019-02-12 | 3761-804-1422 | ND |
2019-02-12 | 3761-805-1130 | 7.10 ppb |
2019-02-12 | 3761-806-1240 | ND |
2019-02-12 | 3761-807-1225 | 3.00 ppb |
2019-02-12 | 3761-808-1413 | ND |
2019-02-12 | 3761-809-1252 | 1.80 ppb |
2019-02-12 | 3761-810-1330 | ND |
2019-02-12 | 3761-811-1347 | ND |
2019-02-12 | 3761-812-1338 | ND |
2019-03-11 | 4417-021-0840 | ND |
2019-03-11 | 4417-025-0925 | ND |
2019-03-11 | 4417-026-1140 | ND |
2019-03-11 | 4417-027-1030 | ND |
2019-03-11 | 4417-028-1020 | ND |
2019-03-11 | 4417-031-1110 | ND |
2019-03-11 | 4417-035-1000 | ND |
2019-03-11 | 4417-037-0905 | ND |
2019-03-11 | 4417-038-0815 | ND |
2019-03-11 | 4417-039-1055 | ND |
2019-03-11 | 4417-061-0940 | ND |
2019-03-11 | 4417-074-1200 | ND |
2019-03-20 | 4417-030-1335 | ND |
2019-03-20 | 4417-035-1310 | ND |
2019-03-20 | 4417-035-1320 | ND |
2019-04-23 | 4417-035-0740 | ND |
2019-04-23 | 4417-035-0750 | ND |
2019-05-07 | 4417-035-0740 | ND |
2019-05-07 | 4417-035-0745 | ND |
2019-05-07 | 3761-801-0825 | 7.10 ppb |
2019-05-07 | 3761-802-0857 | 5.80 ppb |
2019-05-07 | 3761-803-1042 | 5.10 ppb |
2019-05-07 | 3761-804-1018 | 4.40 ppb |
2019-05-07 | 3761-805-0924 | 4.20 ppb |
2019-05-07 | 3761-806-0953 | 4.50 ppb |
2019-05-07 | 3761-807-0938 | 4.60 ppb |
2019-05-07 | 3761-808-1031 | ND |
2019-05-07 | 3761-809-1155 | 5.00 ppb |
2019-05-07 | 3761-810-1103 | 5.30 ppb |
2019-05-07 | 3761-811-1130 | 2.90 ppb |
2019-05-07 | 3761-812-1120 | 4.10 ppb |
2019-05-29 | 4417-019-1130 | ND |
2019-05-29 | 4417-025-0825 | ND |
2019-07-23 | 4417-019-0840 | ND |
2019-07-23 | 4417-019-0845 | ND |
2019-07-23 | 4417-025-0915 | ND |
2019-07-23 | 4417-033-0750 | ND |
2019-07-23 | 4417-034-1020 | ND |
2019-07-23 | 4417-035-0855 | ND |
2019-08-13 | 3761-801-1210 | 5.30 ppb |
2019-08-13 | 3761-802-0948 | 6.20 ppb |
2019-08-13 | 3761-803-0724 | 5.70 ppb |
2019-08-13 | 3761-804-0741 | 4.50 ppb |
2019-08-13 | 3761-805-1039 | 6.10 ppb |
2019-08-13 | 3761-806-1020 | 6.00 ppb |
2019-08-13 | 3761-807-1057 | 2.40 ppb |
2019-08-13 | 3761-808-0804 | 5.60 ppb |
2019-08-13 | 3761-809-1117 | 4.70 ppb |
2019-08-13 | 3761-810-0118 | 1.90 ppb |
2019-08-13 | 3761-811-1251 | 2.40 ppb |
2019-08-13 | 3761-812-1236 | 12.1 ppb |
2019-09-17 | 4417-073-0815 | ND |
2019-11-05 | 4417-019-1105 | ND |
2019-11-05 | 4417-022-1030 | ND |
2019-11-05 | 4417-025-1125 | ND |
2019-11-05 | 4417-073-0955 | ND |
2019-11-05 | 4417-073-1505 | ND |
2019-11-12 | 3761-801-0646 | 5.00 ppb |
2019-11-12 | 3761-802-0756 | 5.40 ppb |
2019-11-12 | 3761-803-0532 | ND |
2019-11-12 | 3761-804-0550 | ND |
2019-11-12 | 3761-805-1131 | 4.40 ppb |
2019-11-12 | 3761-806-1141 | 1.000 ppb |
2019-11-12 | 3761-807-1123 | ND |
2019-11-12 | 3761-808-0542 | 1.70 ppb |
2019-11-12 | 3761-809-0706 | 1.000 ppb |
2019-11-12 | 3761-810-0625 | 4.30 ppb |
2019-11-12 | 3761-811-0613 | ND |
2019-11-12 | 3761-812-0604 | 2.20 ppb |