Dibromochloromethane
Ventura Waterworks District No. 8 - Simi Valley
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 | 6.01 ppb | 35 | 33 | ND - 10.00 ppb |
2015 | 7.57 ppb | 34 | 33 | ND - 12.0 ppb |
2016 | 7.13 ppb | 32 | 32 | 3.00 ppb - 13.0 ppb |
2017 | 6.64 ppb | 34 | 33 | ND - 8.90 ppb |
2018 | 7.56 ppb | 33 | 33 | 2.90 ppb - 20.0 ppb |
2019 | 7.29 ppb | 34 | 33 | ND - 17.0 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 |
---|---|---|
2014-01-02 | 9588-014-0949 | 7.00 ppb |
2014-01-02 | 9588-015-1105 | 6.60 ppb |
2014-01-02 | 9588-016-1118 | 6.30 ppb |
2014-01-02 | 9588-017-0753 | 7.70 ppb |
2014-01-02 | 9588-018-0809 | 8.30 ppb |
2014-01-02 | 9588-019-0834 | 6.20 ppb |
2014-01-02 | 9588-020-0820 | 7.20 ppb |
2014-01-02 | 9588-021-0926 | 8.20 ppb |
2014-04-01 | 9588-014-0949 | 7.10 ppb |
2014-04-01 | 9588-015-1035 | 10.00 ppb |
2014-04-01 | 9588-016-1056 | 10.00 ppb |
2014-04-01 | 9588-017-0800 | 8.70 ppb |
2014-04-01 | 9588-018-0818 | 8.90 ppb |
2014-04-01 | 9588-019-0905 | 6.60 ppb |
2014-04-01 | 9588-020-0852 | 7.90 ppb |
2014-04-01 | 9588-021-0926 | 9.50 ppb |
2014-04-15 | 9588-013-1227 | ND |
2014-04-30 | 9588-011-1215 | 2.00 ppb |
2014-05-20 | 9588-012-0922 | ND |
2014-07-01 | 9588-014-1020 | 4.70 ppb |
2014-07-01 | 9588-015-1050 | 5.60 ppb |
2014-07-01 | 9588-016-0940 | 5.50 ppb |
2014-07-01 | 9588-017-0850 | 4.90 ppb |
2014-07-01 | 9588-018-0910 | 5.30 ppb |
2014-07-01 | 9588-019-0930 | 4.50 ppb |
2014-07-01 | 9588-020-0920 | 4.80 ppb |
2014-07-01 | 9588-021-1000 | 4.60 ppb |
2014-09-23 | 9588-014-0825 | 5.20 ppb |
2014-09-23 | 9588-015-0850 | 5.10 ppb |
2014-09-23 | 9588-016-0842 | 5.00 ppb |
2014-09-23 | 9588-017-0743 | 6.00 ppb |
2014-09-23 | 9588-018-0759 | 5.40 ppb |
2014-09-23 | 9588-019-0828 | 5.20 ppb |
2014-09-23 | 9588-020-0815 | 5.30 ppb |
2014-09-23 | 9588-021-0805 | 5.10 ppb |
2015-01-06 | 9588-014-0925 | 5.40 ppb |
2015-01-06 | 9588-015-1033 | 6.00 ppb |
2015-01-06 | 9588-016-1020 | 6.40 ppb |
2015-01-06 | 9588-017-0815 | 7.10 ppb |
2015-01-06 | 9588-018-0830 | 7.30 ppb |
2015-01-06 | 9588-019-0855 | 5.80 ppb |
2015-01-06 | 9588-020-0845 | 6.30 ppb |
2015-01-06 | 9588-021-0912 | 5.80 ppb |
2015-04-07 | 9588-014-1418 | 12.0 ppb |
2015-04-07 | 9588-015-1455 | 6.60 ppb |
2015-04-07 | 9588-016-1515 | 8.50 ppb |
2015-04-07 | 9588-017-1310 | 12.0 ppb |
2015-04-07 | 9588-018-1320 | 12.0 ppb |
2015-04-07 | 9588-019-1340 | 6.80 ppb |
2015-04-07 | 9588-020-1332 | 7.00 ppb |
2015-04-07 | 9588-021-1358 | 8.90 ppb |
2015-06-02 | 9588-011-0915 | 3.00 ppb |
2015-07-07 | 9588-014-0925 | 8.20 ppb |
2015-07-07 | 9588-015-0955 | 5.10 ppb |
2015-07-07 | 9588-016-1010 | 8.40 ppb |
2015-07-07 | 9588-017-0745 | 7.00 ppb |
2015-07-07 | 9588-018-0800 | 7.70 ppb |
2015-07-07 | 9588-019-0830 | 4.40 ppb |
2015-07-07 | 9588-020-0815 | 5.70 ppb |
2015-07-07 | 9588-021-0900 | 4.90 ppb |
2015-07-21 | 9588-007-1450 | ND |
2015-10-06 | 9588-014-1043 | 11.0 ppb |
2015-10-06 | 9588-015-1152 | 9.50 ppb |
2015-10-06 | 9588-016-0952 | 10.00 ppb |
2015-10-06 | 9588-017-0803 | 8.20 ppb |
2015-10-06 | 9588-018-0818 | 9.40 ppb |
2015-10-06 | 9588-019-0920 | 9.90 ppb |
2015-10-06 | 9588-020-0855 | 11.0 ppb |
2015-10-06 | 9588-021-1022 | 10.00 ppb |
2016-01-05 | 9588-014-1020 | 6.60 ppb |
2016-01-05 | 9588-015-1105 | 7.70 ppb |
2016-01-05 | 9588-016-1115 | 7.00 ppb |
2016-01-05 | 9588-017-0850 | 8.70 ppb |
2016-01-05 | 9588-018-0910 | 7.10 ppb |
2016-01-05 | 9588-019-0945 | 6.40 ppb |
2016-01-05 | 9588-020-0933 | 6.80 ppb |
2016-01-05 | 9588-021-1000 | 7.60 ppb |
2016-04-05 | 9588-014-0920 | 3.00 ppb |
2016-04-05 | 9588-015-1000 | 9.10 ppb |
2016-04-05 | 9588-016-0945 | 6.50 ppb |
2016-04-05 | 9588-017-0805 | 5.40 ppb |
2016-04-05 | 9588-018-0820 | 5.50 ppb |
2016-04-05 | 9588-019-0840 | 3.70 ppb |
2016-04-05 | 9588-020-0830 | 5.60 ppb |
2016-04-05 | 9588-021-0905 | 3.00 ppb |
2016-07-05 | 9588-014-0922 | 6.20 ppb |
2016-07-05 | 9588-015-1030 | 7.40 ppb |
2016-07-05 | 9588-016-0930 | 8.40 ppb |
2016-07-05 | 9588-017-0755 | 9.00 ppb |
2016-07-05 | 9588-018-0818 | 7.60 ppb |
2016-07-05 | 9588-019-0844 | 6.60 ppb |
2016-07-05 | 9588-020-0833 | 8.10 ppb |
2016-07-05 | 9588-021-0905 | 7.40 ppb |
2016-10-06 | 9588-014-1010 | 7.50 ppb |
2016-10-06 | 9588-015-1030 | 13.0 ppb |
2016-10-06 | 9588-016-1045 | 9.50 ppb |
2016-10-06 | 9588-017-0846 | 6.50 ppb |
2016-10-06 | 9588-018-0858 | 5.90 ppb |
2016-10-06 | 9588-019-0930 | 8.60 ppb |
2016-10-06 | 9588-020-0920 | 11.0 ppb |
2016-10-06 | 9588-021-0950 | 5.70 ppb |
2017-01-04 | 9588-014-1000 | 6.50 ppb |
2017-01-04 | 9588-015-1024 | 7.80 ppb |
2017-01-04 | 9588-016-1048 | 7.90 ppb |
2017-01-04 | 9588-017-0822 | 7.80 ppb |
2017-01-04 | 9588-018-0850 | 8.60 ppb |
2017-01-04 | 9588-019-0914 | 7.10 ppb |
2017-01-04 | 9588-020-0900 | 7.60 ppb |
2017-01-04 | 9588-021-0941 | 7.80 ppb |
2017-04-04 | 9588-014-0937 | 4.00 ppb |
2017-04-04 | 9588-015-1014 | 5.70 ppb |
2017-04-04 | 9588-016-1053 | 7.30 ppb |
2017-04-04 | 9588-017-1053 | 6.20 ppb |
2017-04-04 | 9588-018-0832 | 6.10 ppb |
2017-04-04 | 9588-019-0858 | 4.10 ppb |
2017-04-04 | 9588-020-0848 | 4.20 ppb |
2017-04-04 | 9588-021-0919 | 4.50 ppb |
2017-05-03 | 9588-013-1445 | ND |
2017-07-05 | 9588-014-1035 | 5.80 ppb |
2017-07-05 | 9588-015-1103 | 6.10 ppb |
2017-07-05 | 9588-016-1120 | 8.00 ppb |
2017-07-05 | 9588-017-0830 | 7.90 ppb |
2017-07-05 | 9588-018-0854 | 7.70 ppb |
2017-07-05 | 9588-019-0930 | 5.20 ppb |
2017-07-05 | 9588-020-0915 | 6.90 ppb |
2017-07-05 | 9588-021-1010 | 6.20 ppb |
2017-10-04 | 9588-014-1514 | 8.10 ppb |
2017-10-04 | 9588-015-1544 | 7.70 ppb |
2017-10-04 | 9588-016-1555 | 8.00 ppb |
2017-10-04 | 9588-017-1350 | 7.70 ppb |
2017-10-04 | 9588-018-1407 | 8.90 ppb |
2017-10-04 | 9588-019-1433 | 6.60 ppb |
2017-10-04 | 9588-020-1420 | 7.00 ppb |
2017-10-04 | 9588-021-1456 | 7.30 ppb |
2017-12-21 | 9588-011-1430 | 7.60 ppb |
2018-01-10 | 9588-014-1135 | 6.90 ppb |
2018-01-10 | 9588-015-1310 | 5.90 ppb |
2018-01-10 | 9588-016-1245 | 4.90 ppb |
2018-01-10 | 9588-017-0823 | 4.60 ppb |
2018-01-10 | 9588-018-0854 | 5.90 ppb |
2018-01-10 | 9588-019-1000 | 5.70 ppb |
2018-01-10 | 9588-020-0930 | 7.30 ppb |
2018-01-10 | 9588-021-1055 | 4.00 ppb |
2018-04-04 | 9588-014-0856 | 19.0 ppb |
2018-04-04 | 9588-015-0952 | 16.0 ppb |
2018-04-04 | 9588-016-1035 | 19.0 ppb |
2018-04-04 | 9588-017-1138 | 14.0 ppb |
2018-04-04 | 9588-018-1123 | 14.0 ppb |
2018-04-04 | 9588-019-1049 | 20.0 ppb |
2018-04-04 | 9588-020-1101 | 20.0 ppb |
2018-04-04 | 9588-021-0931 | 18.0 ppb |
2018-07-03 | 9588-014-0930 | 3.90 ppb |
2018-07-03 | 9588-015-1000 | 4.00 ppb |
2018-07-03 | 9588-016-1015 | 4.90 ppb |
2018-07-03 | 9588-017-0815 | 4.40 ppb |
2018-07-03 | 9588-018-0830 | 4.50 ppb |
2018-07-03 | 9588-019-0855 | 3.70 ppb |
2018-07-03 | 9588-020-0840 | 4.20 ppb |
2018-07-03 | 9588-021-0915 | 3.60 ppb |
2018-10-04 | 9588-014-1038 | 3.20 ppb |
2018-10-04 | 9588-015-1121 | 3.40 ppb |
2018-10-04 | 9588-016-1200 | 2.90 ppb |
2018-10-04 | 9588-017-0800 | 4.10 ppb |
2018-10-04 | 9588-018-0820 | 3.50 ppb |
2018-10-04 | 9588-019-0915 | 3.40 ppb |
2018-10-04 | 9588-020-0845 | 3.70 ppb |
2018-10-04 | 9588-021-0940 | 3.30 ppb |
2018-12-19 | 9588-011-1118 | 3.60 ppb |
2019-01-02 | 9588-014-1001 | 5.50 ppb |
2019-01-02 | 9588-015-1042 | 6.00 ppb |
2019-01-02 | 9588-016-1033 | 5.30 ppb |
2019-01-02 | 9588-017-0900 | 4.10 ppb |
2019-01-02 | 9588-018-0915 | 5.30 ppb |
2019-01-02 | 9588-019-0935 | 5.50 ppb |
2019-01-02 | 9588-020-0925 | 5.20 ppb |
2019-01-02 | 9588-021-0955 | 5.70 ppb |
2019-04-04 | 9588-014-1050 | 17.0 ppb |
2019-04-04 | 9588-015-1120 | 6.50 ppb |
2019-04-04 | 9588-016-1140 | 5.50 ppb |
2019-04-04 | 9588-017-0830 | 5.50 ppb |
2019-04-04 | 9588-018-0915 | 4.80 ppb |
2019-04-04 | 9588-019-1000 | 8.10 ppb |
2019-04-04 | 9588-020-0940 | 17.0 ppb |
2019-04-04 | 9588-021-1030 | 7.20 ppb |
2019-07-11 | 9588-014-1112 | 11.0 ppb |
2019-07-11 | 9588-015-1140 | 6.40 ppb |
2019-07-11 | 9588-016-1155 | 8.70 ppb |
2019-07-11 | 9588-017-0948 | 14.0 ppb |
2019-07-11 | 9588-018-1015 | 15.0 ppb |
2019-07-11 | 9588-019-1035 | 8.40 ppb |
2019-07-11 | 9588-020-1022 | 17.0 ppb |
2019-07-11 | 9588-021-1052 | 4.50 ppb |
2019-10-02 | 9588-014-1045 | 6.30 ppb |
2019-10-02 | 9588-015-1115 | 4.40 ppb |
2019-10-02 | 9588-016-1140 | 4.30 ppb |
2019-10-02 | 9588-017-0827 | 6.30 ppb |
2019-10-02 | 9588-018-0850 | 6.20 ppb |
2019-10-02 | 9588-019-0945 | 6.00 ppb |
2019-10-02 | 9588-020-0915 | 6.20 ppb |
2019-10-02 | 9588-021-1015 | 6.60 ppb |
2019-12-09 | 9588-007-1330 | ND |
2019-12-09 | 9588-011-1255 | 2.30 ppb |