Bromoform
City of Alhambra
Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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 |
---|---|---|---|---|
2014 | 1.99 ppb | 36 | 31 | ND - 3.00 ppb |
2015 | 2.96 ppb | 36 | 32 | ND - 8.10 ppb |
2016 | 3.12 ppb | 36 | 32 | ND - 7.80 ppb |
2017 | 2.83 ppb | 36 | 32 | ND - 5.70 ppb |
2018 | 3.68 ppb | 36 | 31 | ND - 8.80 ppb |
2019 | 3.83 ppb | 36 | 32 | ND - 6.80 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform 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 |
---|---|---|
2014-03-17 | 9588-800-0930 | 2.40 ppb |
2014-03-17 | 9588-801-0920 | 2.30 ppb |
2014-03-17 | 9588-802-0900 | 2.50 ppb |
2014-03-17 | 9588-803-0850 | 2.40 ppb |
2014-03-17 | 9588-804-0910 | 2.30 ppb |
2014-03-17 | 9588-805-0940 | 2.50 ppb |
2014-03-17 | 9588-806-0820 | 1.30 ppb |
2014-03-17 | 9588-807-0840 | 2.20 ppb |
2014-06-19 | 9588-800-1155 | 2.50 ppb |
2014-06-19 | 9588-801-1140 | 2.90 ppb |
2014-06-19 | 9588-802-1115 | 2.50 ppb |
2014-06-19 | 9588-803-1105 | 2.70 ppb |
2014-06-19 | 9588-804-1125 | 2.60 ppb |
2014-06-19 | 9588-805-1210 | 2.60 ppb |
2014-06-19 | 9588-806-1040 | 3.00 ppb |
2014-06-19 | 9588-807-1055 | 2.80 ppb |
2014-07-08 | 9588-007-0905 | ND |
2014-07-08 | 9588-011-0915 | ND |
2014-07-08 | 9588-013-0940 | ND |
2014-09-15 | 9588-800-1050 | 2.10 ppb |
2014-09-15 | 9588-801-1040 | 2.20 ppb |
2014-09-15 | 9588-802-1025 | 2.10 ppb |
2014-09-15 | 9588-803-1015 | 2.10 ppb |
2014-09-15 | 9588-804-1030 | 2.10 ppb |
2014-09-15 | 9588-805-1105 | 2.30 ppb |
2014-09-15 | 9588-806-0940 | 1.70 ppb |
2014-09-15 | 9588-807-1000 | 2.50 ppb |
2014-10-01 | 9588-014-1130 | ND |
2014-12-16 | 9588-800-0845 | 2.10 ppb |
2014-12-16 | 9588-801-0835 | 2.20 ppb |
2014-12-16 | 9588-802-0810 | 2.10 ppb |
2014-12-16 | 9588-803-0755 | 2.00 ppb |
2014-12-16 | 9588-804-0820 | 2.20 ppb |
2014-12-16 | 9588-805-0900 | 2.20 ppb |
2014-12-16 | 9588-806-0730 | 2.20 ppb |
2014-12-16 | 9588-807-0745 | ND |
2015-03-16 | 9588-800-1055 | 2.40 ppb |
2015-03-16 | 9588-801-1045 | 2.40 ppb |
2015-03-16 | 9588-802-1025 | 2.60 ppb |
2015-03-16 | 9588-803-1010 | 2.40 ppb |
2015-03-16 | 9588-804-1035 | 2.30 ppb |
2015-03-16 | 9588-805-1110 | 2.70 ppb |
2015-03-16 | 9588-806-0930 | 8.10 ppb |
2015-03-16 | 9588-807-0950 | 2.50 ppb |
2015-06-15 | 9588-800-0930 | 3.50 ppb |
2015-06-15 | 9588-801-0915 | 3.40 ppb |
2015-06-15 | 9588-802-0845 | 3.00 ppb |
2015-06-15 | 9588-803-0835 | 3.10 ppb |
2015-06-15 | 9588-804-0900 | 3.10 ppb |
2015-06-15 | 9588-805-0940 | 3.60 ppb |
2015-06-15 | 9588-806-0800 | 2.50 ppb |
2015-06-15 | 9588-807-0820 | 3.70 ppb |
2015-07-07 | 9588-007-0900 | ND |
2015-07-07 | 9588-011-0925 | ND |
2015-09-16 | 9588-800-0945 | 3.80 ppb |
2015-09-16 | 9588-801-0935 | 4.20 ppb |
2015-09-16 | 9588-802-0910 | 2.70 ppb |
2015-09-16 | 9588-803-0905 | 4.10 ppb |
2015-09-16 | 9588-804-0925 | 4.50 ppb |
2015-09-16 | 9588-805-1000 | 4.20 ppb |
2015-09-16 | 9588-806-0830 | 4.20 ppb |
2015-09-16 | 9588-807-0850 | 4.00 ppb |
2015-09-23 | 9588-013-0930 | ND |
2015-10-08 | 9588-014-1115 | ND |
2015-12-15 | 9588-800-0935 | 3.20 ppb |
2015-12-15 | 9588-801-0925 | 3.10 ppb |
2015-12-15 | 9588-802-0910 | 3.20 ppb |
2015-12-15 | 9588-803-0900 | 3.10 ppb |
2015-12-15 | 9588-804-0915 | 2.80 ppb |
2015-12-15 | 9588-805-0945 | 3.20 ppb |
2015-12-15 | 9588-806-0835 | 2.40 ppb |
2015-12-15 | 9588-807-0850 | 2.70 ppb |
2016-03-21 | 9588-800-1010 | 3.70 ppb |
2016-03-21 | 9588-801-1000 | 3.80 ppb |
2016-03-21 | 9588-802-0940 | 3.80 ppb |
2016-03-21 | 9588-803-0935 | 3.60 ppb |
2016-03-21 | 9588-804-0950 | 3.40 ppb |
2016-03-21 | 9588-805-1020 | 3.70 ppb |
2016-03-21 | 9588-806-0910 | 7.80 ppb |
2016-03-21 | 9588-807-0925 | 4.10 ppb |
2016-06-21 | 9588-800-0905 | 3.00 ppb |
2016-06-21 | 9588-801-0855 | 3.40 ppb |
2016-06-21 | 9588-802-0835 | 3.10 ppb |
2016-06-21 | 9588-803-0825 | 3.10 ppb |
2016-06-21 | 9588-804-0845 | 2.90 ppb |
2016-06-21 | 9588-805-0915 | 3.40 ppb |
2016-06-21 | 9588-806-0800 | 1.40 ppb |
2016-06-21 | 9588-807-0810 | 2.60 ppb |
2016-07-12 | 9588-007-0850 | ND |
2016-07-12 | 9588-011-1035 | ND |
2016-07-12 | 9588-013-1010 | ND |
2016-09-22 | 9588-800-1005 | 3.30 ppb |
2016-09-22 | 9588-801-0950 | 3.20 ppb |
2016-09-22 | 9588-802-0920 | 3.30 ppb |
2016-09-22 | 9588-803-0905 | 3.10 ppb |
2016-09-22 | 9588-804-0935 | 3.00 ppb |
2016-09-22 | 9588-805-1015 | 3.60 ppb |
2016-09-22 | 9588-806-0830 | 3.70 ppb |
2016-09-22 | 9588-807-0850 | 3.40 ppb |
2016-10-06 | 9588-014-1120 | ND |
2016-12-19 | 9588-800-1050 | 3.60 ppb |
2016-12-19 | 9588-801-1040 | 3.50 ppb |
2016-12-19 | 9588-802-1015 | 4.50 ppb |
2016-12-19 | 9588-803-1005 | 3.60 ppb |
2016-12-19 | 9588-804-1030 | 3.50 ppb |
2016-12-19 | 9588-805-1105 | 4.00 ppb |
2016-12-19 | 9588-806-0940 | 2.40 ppb |
2016-12-19 | 9588-807-0955 | 3.80 ppb |
2017-03-20 | 9588-800-1000 | 3.40 ppb |
2017-03-20 | 9588-801-0945 | 3.30 ppb |
2017-03-20 | 9588-802-0915 | 4.30 ppb |
2017-03-20 | 9588-803-0900 | 3.30 ppb |
2017-03-20 | 9588-804-0930 | 5.20 ppb |
2017-03-20 | 9588-805-1035 | 5.70 ppb |
2017-03-20 | 9588-806-0825 | 2.50 ppb |
2017-03-20 | 9588-807-0845 | 3.10 ppb |
2017-06-20 | 9588-800-1010 | 2.40 ppb |
2017-06-20 | 9588-801-1125 | 2.40 ppb |
2017-06-20 | 9588-802-1055 | 2.70 ppb |
2017-06-20 | 9588-803-1030 | 2.30 ppb |
2017-06-20 | 9588-804-1115 | 3.30 ppb |
2017-06-20 | 9588-805-1000 | 3.70 ppb |
2017-06-20 | 9588-806-0935 | 2.40 ppb |
2017-06-20 | 9588-807-1020 | 2.50 ppb |
2017-07-18 | 9588-007-1125 | ND |
2017-07-18 | 9588-013-1245 | ND |
2017-09-06 | 9588-011-0930 | ND |
2017-09-19 | 9588-800-1015 | 2.90 ppb |
2017-09-19 | 9588-801-1005 | 3.40 ppb |
2017-09-19 | 9588-802-0945 | 3.30 ppb |
2017-09-19 | 9588-803-0935 | 3.50 ppb |
2017-09-19 | 9588-804-0950 | 2.70 ppb |
2017-09-19 | 9588-805-1030 | 2.90 ppb |
2017-09-19 | 9588-806-0900 | 2.30 ppb |
2017-09-19 | 9588-807-0925 | 3.00 ppb |
2017-10-03 | 9588-014-1055 | ND |
2017-12-19 | 9588-800-1040 | 2.70 ppb |
2017-12-19 | 9588-801-1030 | 3.50 ppb |
2017-12-19 | 9588-802-1010 | 2.90 ppb |
2017-12-19 | 9588-803-1000 | 3.10 ppb |
2017-12-19 | 9588-804-1020 | 3.30 ppb |
2017-12-19 | 9588-805-1050 | 3.50 ppb |
2017-12-19 | 9588-806-0940 | 3.10 ppb |
2017-12-19 | 9588-807-0950 | 3.40 ppb |
2018-03-19 | 9588-800-0925 | 6.70 ppb |
2018-03-19 | 9588-801-0915 | 6.90 ppb |
2018-03-19 | 9588-802-0855 | 8.00 ppb |
2018-03-19 | 9588-803-0845 | 8.80 ppb |
2018-03-19 | 9588-804-0905 | 6.80 ppb |
2018-03-19 | 9588-805-0935 | 8.40 ppb |
2018-03-19 | 9588-806-0815 | 5.00 ppb |
2018-03-19 | 9588-807-0830 | 6.90 ppb |
2018-06-19 | 9588-800-1210 | 2.40 ppb |
2018-06-19 | 9588-801-1205 | 2.30 ppb |
2018-06-19 | 9588-802-1140 | 2.90 ppb |
2018-06-19 | 9588-803-1130 | 2.50 ppb |
2018-06-19 | 9588-804-1150 | 2.40 ppb |
2018-06-19 | 9588-805-1225 | 2.40 ppb |
2018-06-19 | 9588-806-1100 | ND |
2018-06-19 | 9588-807-1115 | 1.90 ppb |
2018-07-10 | 9588-007-0905 | ND |
2018-07-10 | 9588-011-1050 | ND |
2018-07-10 | 9588-013-1105 | ND |
2018-09-19 | 9588-800-1115 | 2.50 ppb |
2018-09-19 | 9588-801-1100 | 2.50 ppb |
2018-09-19 | 9588-802-1030 | 2.60 ppb |
2018-09-19 | 9588-803-1015 | 2.50 ppb |
2018-09-19 | 9588-804-1045 | 2.20 ppb |
2018-09-19 | 9588-805-1130 | 2.30 ppb |
2018-09-19 | 9588-806-0945 | 3.70 ppb |
2018-09-19 | 9588-807-1000 | 2.00 ppb |
2018-10-02 | 9588-014-1020 | ND |
2018-12-19 | 9588-800-1140 | 5.50 ppb |
2018-12-19 | 9588-801-1200 | 5.40 ppb |
2018-12-19 | 9588-802-1210 | 5.90 ppb |
2018-12-19 | 9588-803-1220 | 3.20 ppb |
2018-12-19 | 9588-804-1150 | 4.60 ppb |
2018-12-19 | 9588-805-1130 | 4.90 ppb |
2018-12-19 | 9588-806-1250 | 3.30 ppb |
2018-12-19 | 9588-807-1235 | 5.10 ppb |
2019-03-20 | 9588-800-0950 | 4.50 ppb |
2019-03-20 | 9588-801-0940 | 4.70 ppb |
2019-03-20 | 9588-802-0915 | 5.00 ppb |
2019-03-20 | 9588-803-0905 | 4.70 ppb |
2019-03-20 | 9588-804-0925 | 4.90 ppb |
2019-03-20 | 9588-805-1010 | 5.60 ppb |
2019-03-20 | 9588-806-0830 | 3.20 ppb |
2019-03-20 | 9588-807-0850 | 4.50 ppb |
2019-06-19 | 9588-800-1045 | 4.30 ppb |
2019-06-19 | 9588-801-1020 | 4.00 ppb |
2019-06-19 | 9588-802-1125 | 4.40 ppb |
2019-06-19 | 9588-803-1110 | 4.90 ppb |
2019-06-19 | 9588-804-1035 | 4.10 ppb |
2019-06-19 | 9588-805-1010 | 4.70 ppb |
2019-06-19 | 9588-806-0950 | 4.10 ppb |
2019-06-19 | 9588-807-1100 | 4.50 ppb |
2019-07-10 | 9588-007-1015 | ND |
2019-07-10 | 9588-011-1135 | ND |
2019-07-10 | 9588-013-1145 | ND |
2019-09-19 | 9588-800-1145 | 3.60 ppb |
2019-09-19 | 9588-801-1210 | 3.90 ppb |
2019-09-19 | 9588-802-1245 | 2.50 ppb |
2019-09-19 | 9588-803-1250 | 3.50 ppb |
2019-09-19 | 9588-804-1220 | 2.70 ppb |
2019-09-19 | 9588-805-1200 | 2.80 ppb |
2019-09-19 | 9588-806-1315 | 1.90 ppb |
2019-09-19 | 9588-807-1300 | 4.00 ppb |
2019-10-02 | 9588-014-1115 | ND |
2019-12-19 | 9588-800-0945 | 4.80 ppb |
2019-12-19 | 9588-801-1035 | 5.20 ppb |
2019-12-19 | 9588-802-1035 | 5.00 ppb |
2019-12-19 | 9588-803-1100 | 6.80 ppb |
2019-12-19 | 9588-804-1020 | 5.40 ppb |
2019-12-19 | 9588-805-1005 | 6.00 ppb |
2019-12-19 | 9588-806-1140 | 3.40 ppb |
2019-12-19 | 9588-807-1120 | 4.40 ppb |