Bromodichloromethane
City of Fountain Valley
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 | 1.69 ppb | 46 | 10 | ND - 11.2 ppb |
2015 | 3.46 ppb | 41 | 15 | ND - 16.4 ppb |
2016 | 1.65 ppb | 39 | 11 | ND - 11.3 ppb |
2017 | 3.17 ppb | 46 | 26 | ND - 12.8 ppb |
2018 | 1.39 ppb | 33 | 9 | ND - 8.10 ppb |
2019 | ND | 40 | 0 | ND |
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 | 4417-006-0800 | ND |
2014-01-15 | 4417-008-0800 | ND |
2014-01-28 | 4417-009-0735 | ND |
2014-01-29 | 4417-011-0740 | ND |
2014-01-30 | 4417-010-0715 | ND |
2014-03-17 | 3761-801-1222 | 9.00 ppb |
2014-03-17 | 3761-802-1449 | 5.90 ppb |
2014-03-17 | 3761-803-1509 | 5.40 ppb |
2014-03-17 | 3761-804-1518 | 6.10 ppb |
2014-03-17 | 3761-805-1202 | 10.1 ppb |
2014-03-17 | 3761-806-1149 | 8.60 ppb |
2014-03-17 | 3761-807-1132 | 10.00 ppb |
2014-03-17 | 3761-808-1210 | 9.80 ppb |
2014-04-07 | 4417-006-0800 | ND |
2014-04-07 | 4417-008-0840 | ND |
2014-04-08 | 4417-010-0825 | ND |
2014-04-08 | 4417-020-0800 | ND |
2014-04-09 | 4417-009-0745 | ND |
2014-04-09 | 4417-011-0815 | ND |
2014-06-29 | 3761-801-1109 | ND |
2014-06-29 | 3761-802-1116 | ND |
2014-06-29 | 3761-803-1129 | ND |
2014-06-29 | 3761-804-1137 | ND |
2014-06-29 | 3761-805-1101 | ND |
2014-06-29 | 3761-806-1043 | ND |
2014-06-29 | 3761-807-1035 | ND |
2014-06-29 | 3761-808-1050 | ND |
2014-07-17 | 4417-010-0810 | ND |
2014-09-08 | 3761-801-1241 | ND |
2014-09-08 | 3761-802-1425 | ND |
2014-09-08 | 3761-803-1432 | ND |
2014-09-08 | 3761-804-1440 | ND |
2014-09-08 | 3761-805-1232 | ND |
2014-09-08 | 3761-806-1158 | ND |
2014-09-08 | 3761-807-1149 | ND |
2014-09-08 | 3761-808-1206 | 1.50 ppb |
2014-10-20 | 4417-009-0840 | ND |
2014-11-25 | 4417-010-0755 | ND |
2014-12-22 | 3761-801-1105 | ND |
2014-12-22 | 3761-802-1300 | ND |
2014-12-22 | 3761-803-1310 | ND |
2014-12-22 | 3761-804-1315 | ND |
2014-12-22 | 3761-805-1045 | ND |
2014-12-22 | 3761-806-1025 | ND |
2014-12-22 | 3761-807-1015 | ND |
2014-12-22 | 3761-808-1300 | 11.2 ppb |
2015-01-12 | 4417-009-0840 | ND |
2015-01-12 | 4417-020-0800 | ND |
2015-01-14 | 4417-010-0835 | ND |
2015-03-09 | 3761-801-0950 | ND |
2015-03-09 | 3761-802-1225 | ND |
2015-03-09 | 3761-803-1240 | ND |
2015-03-09 | 3761-804-1255 | ND |
2015-03-09 | 3761-805-0930 | ND |
2015-03-09 | 3761-806-0900 | ND |
2015-03-09 | 3761-807-0850 | ND |
2015-03-09 | 3761-808-1210 | 8.50 ppb |
2015-04-07 | 4417-006-0830 | ND |
2015-04-07 | 4417-008-0915 | ND |
2015-04-15 | 4417-011-0750 | ND |
2015-04-15 | 4417-020-0830 | ND |
2015-05-28 | 4417-009-0735 | ND |
2015-06-01 | 3761-801-1035 | ND |
2015-06-01 | 3761-802-1240 | ND |
2015-06-01 | 3761-803-1250 | ND |
2015-06-01 | 3761-804-1300 | ND |
2015-06-01 | 3761-805-1015 | ND |
2015-06-01 | 3761-806-0950 | ND |
2015-06-01 | 3761-807-0940 | ND |
2015-06-01 | 3761-808-1415 | 3.60 ppb |
2015-07-13 | 4417-006-0820 | ND |
2015-09-07 | 3761-801-0630 | 12.5 ppb |
2015-09-07 | 3761-802-0830 | 12.6 ppb |
2015-09-07 | 3761-803-0840 | 12.8 ppb |
2015-09-07 | 3761-804-0850 | 13.7 ppb |
2015-09-07 | 3761-805-0610 | 9.80 ppb |
2015-09-07 | 3761-806-0550 | ND |
2015-09-07 | 3761-807-0540 | ND |
2015-09-07 | 3761-808-1000 | 16.4 ppb |
2015-12-07 | 3761-801-0750 | 7.60 ppb |
2015-12-07 | 3761-802-1000 | 8.70 ppb |
2015-12-07 | 3761-803-1015 | 5.40 ppb |
2015-12-07 | 3761-804-1030 | 6.30 ppb |
2015-12-07 | 3761-805-0725 | ND |
2015-12-07 | 3761-806-0700 | 8.00 ppb |
2015-12-07 | 3761-807-0645 | 6.30 ppb |
2015-12-07 | 3761-808-1145 | 9.70 ppb |
2016-01-13 | 4417-010-0750 | ND |
2016-03-07 | 3761-801-0935 | 6.10 ppb |
2016-03-07 | 3761-802-1150 | 5.70 ppb |
2016-03-07 | 3761-803-1200 | 6.10 ppb |
2016-03-07 | 3761-804-1210 | 6.10 ppb |
2016-03-07 | 3761-805-0915 | 6.10 ppb |
2016-03-07 | 3761-806-0855 | ND |
2016-03-07 | 3761-807-0845 | 1.10 ppb |
2016-03-07 | 3761-808-1140 | 6.50 ppb |
2016-04-05 | 4417-009-0735 | ND |
2016-04-06 | 4417-008-0810 | ND |
2016-04-06 | 4417-020-0745 | ND |
2016-04-07 | 4417-006-0850 | ND |
2016-04-07 | 4417-011-0755 | ND |
2016-06-06 | 3761-801-1130 | ND |
2016-06-06 | 3761-802-1330 | ND |
2016-06-06 | 3761-803-1340 | ND |
2016-06-06 | 3761-804-1350 | ND |
2016-06-06 | 3761-805-1110 | ND |
2016-06-06 | 3761-806-1050 | ND |
2016-06-06 | 3761-807-1040 | ND |
2016-06-06 | 3761-808-1500 | 4.90 ppb |
2016-07-12 | 4417-006-0820 | ND |
2016-09-05 | 3761-801-0730 | ND |
2016-09-05 | 3761-802-0930 | ND |
2016-09-05 | 3761-803-0940 | ND |
2016-09-05 | 3761-804-0950 | ND |
2016-09-05 | 3761-805-0710 | ND |
2016-09-05 | 3761-806-0650 | ND |
2016-09-05 | 3761-807-0640 | ND |
2016-09-05 | 3761-808-1100 | 11.3 ppb |
2016-12-05 | 3761-801-1030 | ND |
2016-12-05 | 3761-802-1230 | ND |
2016-12-05 | 3761-803-1240 | ND |
2016-12-05 | 3761-804-1250 | ND |
2016-12-05 | 3761-805-1010 | ND |
2016-12-05 | 3761-806-0950 | ND |
2016-12-05 | 3761-807-0940 | 1.000 ppb |
2016-12-05 | 3761-808-1400 | 9.30 ppb |
2017-01-12 | 4417-010-0940 | ND |
2017-02-27 | 3761-801-1030 | ND |
2017-02-27 | 3761-802-1230 | ND |
2017-02-27 | 3761-803-1240 | ND |
2017-02-27 | 3761-804-1250 | ND |
2017-02-27 | 3761-805-1010 | ND |
2017-02-27 | 3761-806-0950 | ND |
2017-02-27 | 3761-807-0940 | ND |
2017-02-27 | 3761-808-1400 | 12.8 ppb |
2017-04-10 | 4417-020-0805 | ND |
2017-04-18 | 4417-008-0800 | ND |
2017-04-18 | 4417-011-0825 | ND |
2017-06-05 | 3761-801-1030 | ND |
2017-06-05 | 3761-802-1230 | ND |
2017-06-05 | 3761-803-1240 | ND |
2017-06-05 | 3761-804-1250 | ND |
2017-06-05 | 3761-805-1010 | ND |
2017-06-05 | 3761-806-0950 | ND |
2017-06-05 | 3761-807-0940 | ND |
2017-06-05 | 3761-808-1400 | 1.80 ppb |
2017-06-15 | 4417-006-0845 | ND |
2017-09-04 | 3761-801-0830 | 3.40 ppb |
2017-09-04 | 3761-802-1030 | 3.90 ppb |
2017-09-04 | 3761-803-1040 | 3.70 ppb |
2017-09-04 | 3761-804-1050 | 4.30 ppb |
2017-09-04 | 3761-805-0810 | 3.80 ppb |
2017-09-04 | 3761-806-0750 | 3.60 ppb |
2017-09-04 | 3761-807-0740 | 3.60 ppb |
2017-09-04 | 3761-808-1200 | 3.50 ppb |
2017-10-03 | 4417-006-0820 | ND |
2017-12-04 | 3761-801-1040 | 6.40 ppb |
2017-12-04 | 3761-802-1240 | 5.30 ppb |
2017-12-04 | 3761-803-1250 | 4.70 ppb |
2017-12-04 | 3761-804-1300 | 4.30 ppb |
2017-12-04 | 3761-805-1020 | 6.00 ppb |
2017-12-04 | 3761-806-1000 | 6.10 ppb |
2017-12-04 | 3761-807-0950 | 5.10 ppb |
2017-12-04 | 3761-808-1035 | 5.00 ppb |
2017-12-15 | 3761-801-1148 | 5.60 ppb |
2017-12-15 | 3761-802-1157 | 7.70 ppb |
2017-12-15 | 3761-803-1205 | 5.50 ppb |
2017-12-15 | 3761-804-1213 | 5.50 ppb |
2017-12-15 | 3761-805-1140 | 9.00 ppb |
2017-12-15 | 3761-806-1122 | 8.30 ppb |
2017-12-15 | 3761-807-1110 | 7.60 ppb |
2017-12-15 | 3761-808-1130 | 9.10 ppb |
2018-01-08 | 4417-006-0800 | ND |
2018-01-10 | 4417-008-0720 | ND |
2018-01-11 | 4417-010-0715 | ND |
2018-02-26 | 4417-011-0750 | ND |
2018-04-09 | 4417-006-0750 | ND |
2018-04-09 | 4417-008-0830 | ND |
2018-04-11 | 4417-020-0740 | ND |
2018-06-11 | 3761-801-1000 | 4.60 ppb |
2018-06-11 | 3761-802-1200 | 4.50 ppb |
2018-06-11 | 3761-803-1210 | 3.70 ppb |
2018-06-11 | 3761-804-1220 | 4.10 ppb |
2018-06-11 | 3761-805-0940 | ND |
2018-06-11 | 3761-806-0920 | ND |
2018-06-11 | 3761-807-0910 | 7.00 ppb |
2018-06-11 | 3761-808-0955 | 7.20 ppb |
2018-06-20 | 4417-011-0845 | ND |
2018-09-10 | 3761-801-1000 | ND |
2018-09-10 | 3761-802-1200 | ND |
2018-09-10 | 3761-803-1210 | ND |
2018-09-10 | 3761-804-1220 | ND |
2018-09-10 | 3761-805-0940 | ND |
2018-09-10 | 3761-806-0920 | ND |
2018-09-10 | 3761-807-0910 | ND |
2018-09-10 | 3761-808-1230 | 5.30 ppb |
2018-09-18 | 4417-009-0805 | ND |
2018-12-10 | 3761-801-0950 | ND |
2018-12-10 | 3761-802-1150 | ND |
2018-12-10 | 3761-803-1200 | ND |
2018-12-10 | 3761-804-1210 | ND |
2018-12-10 | 3761-805-0930 | 1.50 ppb |
2018-12-10 | 3761-806-0910 | ND |
2018-12-10 | 3761-807-0900 | ND |
2018-12-10 | 3761-808-0945 | 8.10 ppb |
2019-01-07 | 4417-008-0830 | ND |
2019-01-09 | 4417-006-0800 | ND |
2019-01-17 | 4417-009-0820 | ND |
2019-01-17 | 4417-010-0750 | ND |
2019-02-11 | 4417-020-0850 | ND |
2019-02-12 | 4417-011-0810 | ND |
2019-03-11 | 3761-801-0950 | ND |
2019-03-11 | 3761-802-1150 | ND |
2019-03-11 | 3761-803-1200 | ND |
2019-03-11 | 3761-804-1210 | ND |
2019-03-11 | 3761-805-0930 | ND |
2019-03-11 | 3761-806-0910 | ND |
2019-03-11 | 3761-807-0900 | ND |
2019-03-11 | 3761-808-1320 | ND |
2019-04-02 | 4417-006-0800 | ND |
2019-04-02 | 4417-008-0840 | ND |
2019-06-10 | 3761-801-1030 | ND |
2019-06-10 | 3761-802-1230 | ND |
2019-06-10 | 3761-803-1240 | ND |
2019-06-10 | 3761-804-1250 | ND |
2019-06-10 | 3761-805-1010 | ND |
2019-06-10 | 3761-806-0950 | ND |
2019-06-10 | 3761-807-0940 | ND |
2019-06-10 | 3761-808-1400 | ND |
2019-09-09 | 3761-801-0930 | ND |
2019-09-09 | 3761-802-1140 | ND |
2019-09-09 | 3761-803-1150 | ND |
2019-09-09 | 3761-804-1200 | ND |
2019-09-09 | 3761-805-0920 | ND |
2019-09-09 | 3761-806-0900 | ND |
2019-09-09 | 3761-807-0850 | ND |
2019-09-09 | 3761-808-1310 | ND |
2019-12-09 | 3761-801-1210 | ND |
2019-12-09 | 3761-802-0910 | ND |
2019-12-09 | 3761-803-0920 | ND |
2019-12-09 | 3761-804-0930 | ND |
2019-12-09 | 3761-805-1150 | ND |
2019-12-09 | 3761-806-1130 | ND |
2019-12-09 | 3761-807-1120 | ND |
2019-12-09 | 3761-808-1205 | ND |