Bromoform
Desert Water Agency
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 | 0.929 ppb | 34 | 11 | ND - 4.40 ppb |
2015 | 0.936 ppb | 33 | 11 | ND - 5.40 ppb |
2016 | 0.262 ppb | 63 | 6 | ND - 4.60 ppb |
2017 | 1.01 ppb | 33 | 13 | ND - 8.50 ppb |
2018 | 1.31 ppb | 27 | 7 | ND - 16.5 ppb |
2019 | 0.585 ppb | 54 | 8 | ND - 7.40 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 |
---|---|---|
2014-03-12 | 3761-034-0715 | 2.50 ppb |
2014-03-12 | 3761-801-0900 | 4.20 ppb |
2014-03-12 | 3761-802-0940 | 4.40 ppb |
2014-03-12 | 3761-803-1005 | ND |
2014-03-12 | 3761-804-1035 | ND |
2014-03-12 | 3761-805-1110 | ND |
2014-03-12 | 3761-806-1140 | ND |
2014-03-12 | 3761-807-1215 | ND |
2014-03-12 | 3761-808-0800 | 1.50 ppb |
2014-06-11 | 3761-801-0915 | 3.10 ppb |
2014-06-11 | 3761-802-0945 | 4.30 ppb |
2014-06-11 | 3761-803-1015 | ND |
2014-06-11 | 3761-804-1045 | ND |
2014-06-11 | 3761-805-1145 | ND |
2014-06-11 | 3761-806-1245 | ND |
2014-06-11 | 3761-807-1215 | ND |
2014-06-11 | 3761-808-1115 | 1.90 ppb |
2014-06-25 | 3761-060-1045 | ND |
2014-09-10 | 3761-801-0930 | ND |
2014-09-10 | 3761-802-1015 | ND |
2014-09-10 | 3761-803-1045 | ND |
2014-09-10 | 3761-804-1145 | ND |
2014-09-10 | 3761-805-1215 | ND |
2014-09-10 | 3761-806-1315 | ND |
2014-09-10 | 3761-807-1245 | ND |
2014-09-10 | 3761-808-1115 | ND |
2014-12-10 | 3761-801-0745 | 3.20 ppb |
2014-12-10 | 3761-802-0845 | 1.70 ppb |
2014-12-10 | 3761-803-0910 | 1.50 ppb |
2014-12-10 | 3761-804-1010 | ND |
2014-12-10 | 3761-805-1035 | ND |
2014-12-10 | 3761-806-1145 | ND |
2014-12-10 | 3761-807-1115 | ND |
2014-12-10 | 3761-808-0940 | 3.30 ppb |
2015-03-11 | 3761-801-0920 | 2.70 ppb |
2015-03-11 | 3761-802-0950 | 3.70 ppb |
2015-03-11 | 3761-803-1015 | 1.70 ppb |
2015-03-11 | 3761-804-1110 | ND |
2015-03-11 | 3761-805-1135 | ND |
2015-03-11 | 3761-806-1230 | ND |
2015-03-11 | 3761-807-1200 | ND |
2015-03-11 | 3761-808-1045 | 2.20 ppb |
2015-06-10 | 3761-801-0925 | 1.80 ppb |
2015-06-10 | 3761-802-1010 | ND |
2015-06-10 | 3761-803-1030 | ND |
2015-06-10 | 3761-804-1100 | ND |
2015-06-10 | 3761-805-1125 | ND |
2015-06-10 | 3761-806-1150 | ND |
2015-06-10 | 3761-807-1220 | ND |
2015-06-10 | 3761-808-1255 | ND |
2015-08-04 | 3761-041-0930 | 5.40 ppb |
2015-09-08 | 3761-801-0930 | 2.20 ppb |
2015-09-08 | 3761-802-1015 | ND |
2015-09-08 | 3761-803-1045 | ND |
2015-09-08 | 3761-804-1115 | ND |
2015-09-08 | 3761-805-1330 | ND |
2015-09-08 | 3761-806-1550 | ND |
2015-09-08 | 3761-807-1500 | ND |
2015-09-08 | 3761-808-1415 | ND |
2015-12-09 | 3761-801-1110 | 3.10 ppb |
2015-12-09 | 3761-802-0940 | 3.80 ppb |
2015-12-09 | 3761-803-1020 | ND |
2015-12-09 | 3761-804-0815 | ND |
2015-12-09 | 3761-805-1020 | ND |
2015-12-09 | 3761-806-0740 | 1.10 ppb |
2015-12-09 | 3761-807-0925 | ND |
2015-12-09 | 3761-808-0900 | 3.20 ppb |
2016-03-07 | 3761-801-1240 | 2.10 ppb |
2016-03-07 | 3761-805-1000 | ND |
2016-03-07 | 3761-807-0930 | ND |
2016-03-09 | 3761-802-1100 | ND |
2016-03-09 | 3761-803-1135 | ND |
2016-03-09 | 3761-804-0940 | ND |
2016-03-09 | 3761-806-0910 | ND |
2016-03-09 | 3761-808-1015 | 3.10 ppb |
2016-03-10 | 3761-008-1000 | ND |
2016-03-30 | 3761-034-0940 | ND |
2016-05-04 | 3761-043-1030 | ND |
2016-05-04 | 3761-060-0935 | ND |
2016-05-11 | 3761-015-1015 | ND |
2016-05-11 | 3761-022-1045 | ND |
2016-05-11 | 3761-026-1125 | ND |
2016-05-18 | 3761-029-1030 | ND |
2016-05-18 | 3761-030-1100 | ND |
2016-06-07 | 3761-801-1430 | ND |
2016-06-07 | 3761-804-1145 | ND |
2016-06-07 | 3761-805-1040 | ND |
2016-06-07 | 3761-806-1005 | ND |
2016-06-07 | 3761-807-0925 | ND |
2016-06-08 | 3761-024-1015 | ND |
2016-06-08 | 3761-044-0945 | ND |
2016-06-08 | 3761-802-1100 | ND |
2016-06-08 | 3761-803-1145 | ND |
2016-06-08 | 3761-808-1215 | ND |
2016-06-15 | 3761-017-1125 | ND |
2016-06-15 | 3761-018-1150 | ND |
2016-06-15 | 3761-033-0000 | ND |
2016-06-15 | 3761-046-1045 | ND |
2016-06-29 | 3761-040-1130 | ND |
2016-07-13 | 3761-010-1115 | ND |
2016-07-13 | 3761-020-1200 | ND |
2016-07-13 | 3761-025-0930 | ND |
2016-07-20 | 3761-039-1110 | ND |
2016-07-21 | 3761-031-1025 | ND |
2016-07-27 | 3761-027-1015 | ND |
2016-08-17 | 3761-034-0950 | ND |
2016-08-17 | 3761-038-1100 | ND |
2016-08-17 | 3761-060-1140 | ND |
2016-09-07 | 3761-028-1100 | ND |
2016-09-07 | 3761-032-0930 | ND |
2016-09-07 | 3761-047-1010 | ND |
2016-09-14 | 3761-801-0915 | 1.90 ppb |
2016-09-14 | 3761-802-0950 | ND |
2016-09-14 | 3761-803-1015 | ND |
2016-09-14 | 3761-804-1105 | ND |
2016-09-14 | 3761-805-1130 | ND |
2016-09-14 | 3761-806-1145 | ND |
2016-09-14 | 3761-807-1210 | ND |
2016-09-14 | 3761-808-1045 | ND |
2016-09-29 | 3761-019-0935 | ND |
2016-09-29 | 3761-045-0925 | ND |
2016-11-16 | 9590-060-1030 | ND |
2016-12-07 | 3761-801-1330 | 2.30 ppb |
2016-12-07 | 3761-802-1430 | ND |
2016-12-07 | 3761-803-1500 | ND |
2016-12-08 | 3761-804-0930 | ND |
2016-12-08 | 3761-805-1000 | ND |
2016-12-08 | 3761-806-1025 | ND |
2016-12-08 | 3761-807-1115 | 2.50 ppb |
2016-12-08 | 3761-808-0900 | 4.60 ppb |
2017-02-22 | 3761-060-1110 | ND |
2017-03-09 | 3761-801-0950 | 1.10 ppb |
2017-03-09 | 3761-802-1100 | ND |
2017-03-09 | 3761-803-1130 | ND |
2017-03-09 | 3761-804-1245 | ND |
2017-03-09 | 3761-805-1345 | ND |
2017-03-09 | 3761-806-1425 | ND |
2017-03-09 | 3761-807-1500 | ND |
2017-03-09 | 3761-808-1315 | 2.50 ppb |
2017-06-12 | 3761-801-1345 | 1.90 ppb |
2017-06-12 | 3761-805-1430 | ND |
2017-06-12 | 3761-807-1105 | ND |
2017-06-13 | 3761-804-0955 | ND |
2017-06-13 | 3761-806-1035 | ND |
2017-06-14 | 3761-802-0955 | 1.30 ppb |
2017-06-14 | 3761-803-1035 | 1.30 ppb |
2017-06-14 | 3761-808-1120 | ND |
2017-09-13 | 3761-801-0920 | 5.70 ppb |
2017-09-13 | 3761-802-0955 | 1.80 ppb |
2017-09-13 | 3761-803-1030 | ND |
2017-09-13 | 3761-804-1130 | ND |
2017-09-13 | 3761-805-1200 | ND |
2017-09-13 | 3761-806-1315 | 1.30 ppb |
2017-09-13 | 3761-807-1235 | 1.30 ppb |
2017-09-13 | 3761-808-1100 | 1.20 ppb |
2017-12-15 | 3761-801-0845 | 8.50 ppb |
2017-12-15 | 3761-802-0910 | 2.30 ppb |
2017-12-15 | 3761-803-0935 | ND |
2017-12-15 | 3761-804-1020 | ND |
2017-12-15 | 3761-805-1040 | ND |
2017-12-15 | 3761-806-1100 | ND |
2017-12-15 | 3761-807-1130 | ND |
2017-12-15 | 3761-808-1000 | 3.10 ppb |
2018-01-19 | 3761-033-1110 | ND |
2018-01-19 | 3761-040-0750 | ND |
2018-06-12 | 3761-801-0947 | 5.60 ppb |
2018-06-12 | 3761-802-1042 | ND |
2018-06-12 | 3761-803-1148 | ND |
2018-06-12 | 3761-808-1224 | ND |
2018-06-13 | 3761-804-0900 | ND |
2018-06-13 | 3761-805-0935 | ND |
2018-06-13 | 3761-806-1014 | ND |
2018-06-13 | 3761-807-1049 | 1.10 ppb |
2018-08-15 | 3761-034-0645 | ND |
2018-09-11 | 3761-801-0700 | 16.5 ppb |
2018-09-11 | 3761-802-0815 | ND |
2018-09-11 | 3761-803-0845 | ND |
2018-09-11 | 3761-804-1000 | ND |
2018-09-11 | 3761-805-1040 | ND |
2018-09-11 | 3761-806-1120 | ND |
2018-09-11 | 3761-807-1200 | ND |
2018-09-11 | 3761-808-0930 | 1.60 ppb |
2018-12-12 | 4790-801-0745 | 6.40 ppb |
2018-12-12 | 4790-802-0815 | 1.70 ppb |
2018-12-12 | 4790-803-0845 | ND |
2018-12-12 | 4790-804-0945 | ND |
2018-12-12 | 4790-805-1015 | ND |
2018-12-12 | 4790-806-1140 | ND |
2018-12-12 | 4790-807-1100 | ND |
2018-12-12 | 4790-808-0915 | 2.60 ppb |
2019-03-07 | 4790-801-0805 | 1.80 ppb |
2019-03-07 | 4790-802-0830 | ND |
2019-03-07 | 4790-803-0740 | 4.70 ppb |
2019-03-07 | 4790-804-0930 | ND |
2019-03-07 | 4790-805-1000 | ND |
2019-03-07 | 4790-806-0955 | ND |
2019-03-07 | 4790-807-1100 | ND |
2019-03-07 | 4790-808-0900 | 1.70 ppb |
2019-05-24 | 4790-029-1410 | ND |
2019-05-24 | 4790-030-0955 | ND |
2019-05-24 | 4790-031-0730 | ND |
2019-05-24 | 4790-043-0930 | ND |
2019-05-24 | 4790-060-1345 | ND |
2019-06-19 | 4790-026-1300 | ND |
2019-06-19 | 4790-033-1430 | ND |
2019-06-19 | 4790-044-1150 | ND |
2019-06-19 | 4790-046-1110 | ND |
2019-06-27 | 4790-801-0855 | 7.40 ppb |
2019-06-27 | 4790-802-0925 | 1.60 ppb |
2019-06-27 | 4790-803-1000 | ND |
2019-06-27 | 4790-804-1055 | ND |
2019-06-27 | 4790-805-1125 | ND |
2019-06-27 | 4790-806-1145 | ND |
2019-06-27 | 4790-807-1215 | ND |
2019-06-27 | 4790-808-1025 | ND |
2019-07-10 | 4790-040-0950 | ND |
2019-07-24 | 4790-025-1000 | ND |
2019-07-24 | 4790-031-1030 | ND |
2019-07-24 | 4790-039-0730 | ND |
2019-07-25 | 4790-024-0200 | ND |
2019-08-06 | 4790-034-0745 | ND |
2019-08-06 | 4790-038-1020 | ND |
2019-08-29 | 4790-019-1025 | ND |
2019-08-29 | 4790-032-1105 | ND |
2019-08-29 | 4790-045-0940 | ND |
2019-08-29 | 4790-047-0740 | ND |
2019-09-12 | 4790-801-1415 | 6.80 ppb |
2019-09-12 | 4790-802-1330 | 2.10 ppb |
2019-09-12 | 4790-803-1300 | ND |
2019-09-12 | 4790-804-1100 | ND |
2019-09-12 | 4790-805-1020 | ND |
2019-09-12 | 4790-806-0930 | ND |
2019-09-12 | 4790-807-0830 | ND |
2019-09-12 | 4790-808-1210 | ND |
2019-09-24 | 4790-037-0740 | ND |
2019-10-17 | 4790-027-0645 | ND |
2019-12-12 | 4790-801-0830 | 5.50 ppb |
2019-12-12 | 4790-802-0945 | ND |
2019-12-12 | 4790-803-1010 | ND |
2019-12-12 | 4790-804-1125 | ND |
2019-12-12 | 4790-805-1150 | ND |
2019-12-12 | 4790-806-1345 | ND |
2019-12-12 | 4790-807-1300 | ND |
2019-12-12 | 4790-808-1045 | ND |