Bromoform
City of Huntington Beach
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.
282
Samples
0
Samples exceeding legal limit (MCL)
177
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 1.89 ppb | 54 | 32 | ND - 9.30 ppb |
| 2015 | 2.92 ppb | 50 | 32 | ND - 17.1 ppb |
| 2016 | 2.68 ppb | 51 | 32 | ND - 17.1 ppb |
| 2017 | 2.89 ppb | 51 | 33 | ND - 15.0 ppb |
| 2018 | 3.40 ppb | 47 | 32 | ND - 15.4 ppb |
| 2019 | 3.16 ppb | 29 | 16 | ND - 19.1 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 |
|---|---|---|
| 2014-01-15 | 4792-801-1135 | 2.60 ppb |
| 2014-01-15 | 4792-802-1200 | 2.00 ppb |
| 2014-01-15 | 4792-803-1230 | 2.10 ppb |
| 2014-01-15 | 4792-804-1240 | 3.40 ppb |
| 2014-01-15 | 4792-805-1210 | 2.00 ppb |
| 2014-01-15 | 4792-806-1125 | 2.30 ppb |
| 2014-01-15 | 4792-807-1220 | 2.30 ppb |
| 2014-01-15 | 4792-808-1150 | 2.30 ppb |
| 2014-02-12 | 4417-008-1010 | ND |
| 2014-02-12 | 4417-010-0925 | ND |
| 2014-02-12 | 4417-011-1020 | ND |
| 2014-02-12 | 4417-012-0750 | ND |
| 2014-02-12 | 4417-013-0850 | ND |
| 2014-02-12 | 4417-025-1000 | ND |
| 2014-03-10 | 4417-016-1000 | ND |
| 2014-04-15 | 4792-801-1235 | 2.40 ppb |
| 2014-04-15 | 4792-802-1250 | 2.50 ppb |
| 2014-04-15 | 4792-803-1200 | 2.50 ppb |
| 2014-04-15 | 4792-804-1220 | 5.30 ppb |
| 2014-04-15 | 4792-805-1145 | 2.40 ppb |
| 2014-04-15 | 4792-806-1055 | 2.80 ppb |
| 2014-04-15 | 4792-807-1130 | 9.30 ppb |
| 2014-04-15 | 4792-808-1115 | 2.50 ppb |
| 2014-05-06 | 4417-008-1105 | ND |
| 2014-05-06 | 4417-009-0850 | ND |
| 2014-05-06 | 4417-011-1115 | ND |
| 2014-05-06 | 4417-013-1000 | ND |
| 2014-05-06 | 4417-016-0920 | ND |
| 2014-05-06 | 4417-025-1050 | ND |
| 2014-06-24 | 4417-025-0855 | ND |
| 2014-06-24 | 4417-025-0910 | ND |
| 2014-07-16 | 4792-801-0845 | 3.00 ppb |
| 2014-07-16 | 4792-802-0920 | 3.20 ppb |
| 2014-07-16 | 4792-803-0935 | 3.10 ppb |
| 2014-07-16 | 4792-804-1025 | 3.20 ppb |
| 2014-07-16 | 4792-805-0945 | 3.20 ppb |
| 2014-07-16 | 4792-806-0820 | 2.80 ppb |
| 2014-07-16 | 4792-807-1000 | 2.30 ppb |
| 2014-07-16 | 4792-808-0905 | 3.00 ppb |
| 2014-08-06 | 4417-008-1010 | ND |
| 2014-08-06 | 4417-011-0950 | ND |
| 2014-08-06 | 4417-013-0910 | ND |
| 2014-08-06 | 4417-016-0850 | ND |
| 2014-08-06 | 4417-025-1025 | ND |
| 2014-10-15 | 4792-801-1140 | 2.53 ppb |
| 2014-10-15 | 4792-802-1315 | 2.52 ppb |
| 2014-10-15 | 4792-803-1225 | 6.12 ppb |
| 2014-10-15 | 4792-804-1055 | 4.69 ppb |
| 2014-10-15 | 4792-805-1305 | 2.36 ppb |
| 2014-10-15 | 4792-806-1120 | 2.62 ppb |
| 2014-10-15 | 4792-807-1245 | 6.52 ppb |
| 2014-10-15 | 4792-808-1205 | 2.05 ppb |
| 2014-11-12 | 4417-011-1025 | ND |
| 2014-11-12 | 4417-025-1105 | ND |
| 2015-01-15 | 1805-801-1105 | 0.890 ppb |
| 2015-01-15 | 1805-802-1140 | 3.14 ppb |
| 2015-01-15 | 1805-803-1150 | 1.18 ppb |
| 2015-01-15 | 1805-804-1230 | 4.90 ppb |
| 2015-01-15 | 1805-805-1200 | 3.49 ppb |
| 2015-01-15 | 1805-806-1045 | 2.83 ppb |
| 2015-01-15 | 1805-807-1210 | 3.95 ppb |
| 2015-01-15 | 1805-808-1125 | 4.14 ppb |
| 2015-02-18 | 4417-010-0950 | ND |
| 2015-02-18 | 4417-011-1025 | ND |
| 2015-02-18 | 4417-012-0840 | ND |
| 2015-03-30 | 4417-008-0840 | ND |
| 2015-03-30 | 4417-025-0855 | ND |
| 2015-04-15 | 1805-801-1005 | 5.12 ppb |
| 2015-04-15 | 1805-802-1035 | 3.69 ppb |
| 2015-04-15 | 1805-803-1050 | 5.05 ppb |
| 2015-04-15 | 1805-804-1215 | 7.61 ppb |
| 2015-04-15 | 1805-805-1105 | 4.01 ppb |
| 2015-04-15 | 1805-806-0945 | 3.29 ppb |
| 2015-04-15 | 1805-807-1115 | 4.61 ppb |
| 2015-04-15 | 1805-808-1025 | 4.39 ppb |
| 2015-05-05 | 4417-008-1045 | ND |
| 2015-05-05 | 4417-009-0840 | ND |
| 2015-05-05 | 4417-011-1030 | ND |
| 2015-06-08 | 4417-008-0915 | ND |
| 2015-06-08 | 4417-008-0930 | ND |
| 2015-07-15 | 1805-801-0929 | 3.30 ppb |
| 2015-07-15 | 1805-802-1015 | 3.05 ppb |
| 2015-07-15 | 1805-803-1028 | 3.95 ppb |
| 2015-07-15 | 1805-804-1112 | 7.22 ppb |
| 2015-07-15 | 1805-805-1040 | 3.95 ppb |
| 2015-07-15 | 1805-806-0908 | 3.17 ppb |
| 2015-07-15 | 1805-807-1051 | 3.28 ppb |
| 2015-07-15 | 1805-808-0955 | 2.77 ppb |
| 2015-07-30 | 4417-008-0920 | ND |
| 2015-07-30 | 4417-011-0940 | ND |
| 2015-07-30 | 4417-013-1110 | ND |
| 2015-07-30 | 4417-016-1010 | ND |
| 2015-07-30 | 4417-025-0905 | ND |
| 2015-10-14 | 1805-801-0850 | 6.82 ppb |
| 2015-10-14 | 1805-802-0930 | 5.76 ppb |
| 2015-10-14 | 1805-803-0942 | 5.15 ppb |
| 2015-10-14 | 1805-804-1030 | 17.1 ppb |
| 2015-10-14 | 1805-805-0955 | 4.74 ppb |
| 2015-10-14 | 1805-806-0750 | 2.67 ppb |
| 2015-10-14 | 1805-807-1015 | 7.87 ppb |
| 2015-10-14 | 1805-808-0920 | 3.11 ppb |
| 2015-11-03 | 4417-008-0940 | ND |
| 2015-11-03 | 4417-025-1000 | ND |
| 2015-11-05 | 4417-011-0810 | ND |
| 2016-01-13 | 1805-801-0807 | 4.58 ppb |
| 2016-01-13 | 1805-802-0850 | 3.94 ppb |
| 2016-01-13 | 1805-803-0859 | 17.1 ppb |
| 2016-01-13 | 1805-804-0828 | 9.34 ppb |
| 2016-01-13 | 1805-807-0920 | 15.3 ppb |
| 2016-01-13 | 1805-808-0840 | 4.65 ppb |
| 2016-01-14 | 1805-805-1050 | 5.06 ppb |
| 2016-01-14 | 1805-806-1005 | 5.78 ppb |
| 2016-02-02 | 4417-008-1030 | ND |
| 2016-02-02 | 4417-010-1115 | ND |
| 2016-02-02 | 4417-011-1010 | ND |
| 2016-02-02 | 4417-012-0805 | ND |
| 2016-02-02 | 4417-013-0935 | ND |
| 2016-02-02 | 4417-025-1050 | ND |
| 2016-04-13 | 1805-801-0832 | 3.45 ppb |
| 2016-04-13 | 1805-803-0925 | 4.50 ppb |
| 2016-04-13 | 1805-804-1001 | 6.53 ppb |
| 2016-04-13 | 1805-805-0936 | 7.18 ppb |
| 2016-04-13 | 1805-806-0810 | 3.68 ppb |
| 2016-04-13 | 1805-807-0946 | 12.9 ppb |
| 2016-04-13 | 1805-808-0914 | 2.24 ppb |
| 2016-04-27 | 1805-802-0945 | 2.68 ppb |
| 2016-05-03 | 4417-008-1020 | ND |
| 2016-05-03 | 4417-016-0850 | ND |
| 2016-05-03 | 4417-025-1005 | ND |
| 2016-05-25 | 4417-011-1040 | ND |
| 2016-07-12 | 1805-801-0815 | 2.15 ppb |
| 2016-07-12 | 1805-802-0845 | 2.47 ppb |
| 2016-07-12 | 1805-803-0855 | 2.93 ppb |
| 2016-07-12 | 1805-804-0935 | 1.66 ppb |
| 2016-07-12 | 1805-805-0905 | 1.85 ppb |
| 2016-07-12 | 1805-806-0730 | 2.91 ppb |
| 2016-07-12 | 1805-807-0920 | 2.96 ppb |
| 2016-07-12 | 1805-808-0835 | 3.21 ppb |
| 2016-07-28 | 4417-008-1020 | ND |
| 2016-07-28 | 4417-025-1045 | ND |
| 2016-08-17 | 4417-011-0830 | ND |
| 2016-09-14 | 4417-009-1100 | ND |
| 2016-09-22 | 4417-009-0840 | ND |
| 2016-10-12 | 1805-801-0805 | 0.820 ppb |
| 2016-10-12 | 1805-802-1024 | 0.920 ppb |
| 2016-10-12 | 1805-803-1034 | 1.08 ppb |
| 2016-10-12 | 1805-804-1102 | 1.17 ppb |
| 2016-10-12 | 1805-805-1041 | 0.880 ppb |
| 2016-10-12 | 1805-806-0737 | 1.000 ppb |
| 2016-10-12 | 1805-807-1047 | 1.11 ppb |
| 2016-10-12 | 1805-808-0820 | 0.790 ppb |
| 2016-10-17 | 4417-008-0850 | ND |
| 2016-10-17 | 4417-009-0810 | ND |
| 2016-11-08 | 4417-011-0935 | ND |
| 2016-11-08 | 4417-025-1015 | ND |
| 2017-01-12 | 1805-801-0954 | 4.67 ppb |
| 2017-01-12 | 1805-802-1114 | 5.88 ppb |
| 2017-01-12 | 1805-803-1128 | 5.04 ppb |
| 2017-01-12 | 1805-804-1220 | 14.7 ppb |
| 2017-01-12 | 1805-805-1139 | 5.27 ppb |
| 2017-01-12 | 1805-806-0911 | 5.70 ppb |
| 2017-01-12 | 1805-807-1146 | 4.74 ppb |
| 2017-01-12 | 1805-808-1050 | 5.22 ppb |
| 2017-02-16 | 4417-008-1030 | ND |
| 2017-02-16 | 4417-010-0950 | ND |
| 2017-02-16 | 4417-011-1020 | ND |
| 2017-02-16 | 4417-012-0925 | ND |
| 2017-02-16 | 4417-013-1105 | ND |
| 2017-02-16 | 4417-025-1045 | ND |
| 2017-04-12 | 1805-801-0805 | 0.750 ppb |
| 2017-04-12 | 1805-802-0918 | 1.70 ppb |
| 2017-04-12 | 1805-803-0926 | 2.06 ppb |
| 2017-04-12 | 1805-804-1020 | 15.0 ppb |
| 2017-04-12 | 1805-805-0936 | 2.28 ppb |
| 2017-04-12 | 1805-806-0740 | 1.19 ppb |
| 2017-04-12 | 1805-807-0945 | 2.84 ppb |
| 2017-04-12 | 1805-808-0821 | 1.80 ppb |
| 2017-04-19 | 4417-012-0850 | ND |
| 2017-05-17 | 4417-009-0830 | ND |
| 2017-05-17 | 4417-010-0945 | ND |
| 2017-05-17 | 4417-011-1015 | ND |
| 2017-05-17 | 4417-016-0850 | ND |
| 2017-05-17 | 4417-025-0805 | ND |
| 2017-07-12 | 1805-801-0818 | 1.49 ppb |
| 2017-07-12 | 1805-802-0840 | 1.18 ppb |
| 2017-07-12 | 1805-803-0850 | 1.29 ppb |
| 2017-07-12 | 1805-804-0937 | 6.71 ppb |
| 2017-07-12 | 1805-805-0855 | 1.26 ppb |
| 2017-07-12 | 1805-806-0800 | 1.14 ppb |
| 2017-07-12 | 1805-807-0915 | 1.23 ppb |
| 2017-07-12 | 1805-808-0830 | 1.21 ppb |
| 2017-08-02 | 4417-011-0855 | ND |
| 2017-08-17 | 4417-025-0935 | ND |
| 2017-09-19 | 4417-008-0900 | 1.000 ppb |
| 2017-10-11 | 1805-801-0934 | 8.09 ppb |
| 2017-10-11 | 1805-802-0959 | 3.88 ppb |
| 2017-10-11 | 1805-803-1009 | 3.57 ppb |
| 2017-10-11 | 1805-804-1048 | 13.9 ppb |
| 2017-10-11 | 1805-805-1021 | 3.63 ppb |
| 2017-10-11 | 1805-806-0915 | 10.8 ppb |
| 2017-10-11 | 1805-807-1030 | 3.45 ppb |
| 2017-10-11 | 1805-808-0948 | 4.53 ppb |
| 2017-10-25 | 4417-008-0820 | ND |
| 2017-10-25 | 4417-008-0830 | ND |
| 2017-10-25 | 4417-008-0840 | ND |
| 2017-10-25 | 4417-025-0900 | ND |
| 2018-01-10 | 1805-801-0802 | 3.93 ppb |
| 2018-01-10 | 1805-802-0832 | 4.17 ppb |
| 2018-01-10 | 1805-803-0845 | 11.5 ppb |
| 2018-01-10 | 1805-804-0925 | 7.85 ppb |
| 2018-01-10 | 1805-806-0741 | 3.56 ppb |
| 2018-01-10 | 1805-806-0854 | 7.90 ppb |
| 2018-01-10 | 1805-807-0907 | 9.65 ppb |
| 2018-01-10 | 1805-808-0818 | 7.08 ppb |
| 2018-01-24 | 4417-013-1100 | ND |
| 2018-02-14 | 4417-025-0840 | ND |
| 2018-03-07 | 4417-008-0800 | ND |
| 2018-04-11 | 1805-801-0843 | 2.13 ppb |
| 2018-04-11 | 1805-802-0951 | 4.08 ppb |
| 2018-04-11 | 1805-803-0940 | 3.98 ppb |
| 2018-04-11 | 1805-804-1018 | 14.3 ppb |
| 2018-04-11 | 1805-805-0930 | 3.64 ppb |
| 2018-04-11 | 1805-806-1045 | 4.43 ppb |
| 2018-04-11 | 1805-807-0921 | 3.98 ppb |
| 2018-04-11 | 1805-808-1006 | 3.06 ppb |
| 2018-05-01 | 4417-008-1115 | ND |
| 2018-05-01 | 4417-009-1000 | ND |
| 2018-05-01 | 4417-010-1020 | ND |
| 2018-05-01 | 4417-016-0945 | ND |
| 2018-05-01 | 4417-025-1100 | ND |
| 2018-06-07 | 4417-011-0820 | ND |
| 2018-07-10 | 1805-801-0800 | 3.21 ppb |
| 2018-07-10 | 1805-802-0925 | 3.47 ppb |
| 2018-07-10 | 1805-803-0932 | 3.21 ppb |
| 2018-07-10 | 1805-804-0910 | 5.64 ppb |
| 2018-07-10 | 1805-805-0940 | 3.16 ppb |
| 2018-07-10 | 1805-806-0745 | 3.62 ppb |
| 2018-07-10 | 1805-807-0955 | 3.01 ppb |
| 2018-07-10 | 1805-808-0916 | 3.13 ppb |
| 2018-07-31 | 4417-025-0845 | ND |
| 2018-08-07 | 4417-011-0835 | ND |
| 2018-09-19 | 4417-008-0825 | ND |
| 2018-10-10 | 1805-801-0915 | 3.37 ppb |
| 2018-10-10 | 1805-802-0802 | 3.13 ppb |
| 2018-10-10 | 1805-803-0830 | 2.88 ppb |
| 2018-10-10 | 1805-804-0905 | 15.4 ppb |
| 2018-10-10 | 1805-805-0810 | 3.22 ppb |
| 2018-10-10 | 1805-806-0930 | 2.70 ppb |
| 2018-10-10 | 1805-807-0820 | 2.91 ppb |
| 2018-10-10 | 1805-808-0840 | 2.45 ppb |
| 2018-10-23 | 4417-008-1000 | ND |
| 2018-10-23 | 4417-011-0945 | ND |
| 2018-10-23 | 4417-025-1015 | ND |
| 2019-01-16 | 4417-008-0920 | ND |
| 2019-01-16 | 4417-010-1025 | ND |
| 2019-01-16 | 4417-011-0835 | ND |
| 2019-01-16 | 4417-012-1000 | ND |
| 2019-01-16 | 4417-013-0730 | ND |
| 2019-01-16 | 4417-016-0805 | ND |
| 2019-01-16 | 4417-025-0900 | ND |
| 2019-04-09 | 4417-009-0900 | ND |
| 2019-04-09 | 4417-025-1030 | ND |
| 2019-04-11 | 4417-008-0935 | ND |
| 2019-07-01 | 4417-011-1015 | ND |
| 2019-07-01 | 4417-025-0945 | ND |
| 2019-07-10 | 1805-801-0840 | 2.49 ppb |
| 2019-07-10 | 1805-802-0905 | 2.36 ppb |
| 2019-07-10 | 1805-803-0912 | 2.51 ppb |
| 2019-07-10 | 1805-804-0735 | 19.1 ppb |
| 2019-07-10 | 1805-805-0920 | 2.51 ppb |
| 2019-07-10 | 1805-806-0825 | 2.54 ppb |
| 2019-07-10 | 1805-807-0930 | 2.80 ppb |
| 2019-07-10 | 1805-808-0855 | 2.88 ppb |
| 2019-10-09 | 1805-801-0850 | 2.04 ppb |
| 2019-10-09 | 1805-802-0930 | 9.13 ppb |
| 2019-10-09 | 1805-803-1030 | 8.44 ppb |
| 2019-10-09 | 1805-804-1130 | 10.5 ppb |
| 2019-10-09 | 1805-805-1035 | 6.31 ppb |
| 2019-10-09 | 1805-806-0830 | 2.32 ppb |
| 2019-10-09 | 1805-807-1040 | 13.9 ppb |
| 2019-10-09 | 1805-808-0915 | 1.92 ppb |
| 2019-10-29 | 4417-025-0905 | ND |