Bromoform
Valley Water Company
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 | 0.687 ppb | 53 | 9 | ND - 7.40 ppb |
2015 | 0.779 ppb | 61 | 8 | ND - 8.40 ppb |
2016 | 1.49 ppb | 54 | 11 | ND - 25.0 ppb |
2017 | 0.909 ppb | 53 | 6 | ND - 12.0 ppb |
2018 | 1.08 ppb | 68 | 14 | ND - 11.0 ppb |
2019 | 0.757 ppb | 54 | 8 | ND - 10.00 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 |
---|---|---|
2014-02-05 | 9590-800-1000 | 2.10 ppb |
2014-02-05 | 9590-801-0930 | 2.00 ppb |
2014-05-05 | 9590-008-1030 | ND |
2014-05-06 | 9590-800-1000 | 4.60 ppb |
2014-05-06 | 9590-801-0930 | 2.90 ppb |
2014-05-07 | 9588-002-1015 | ND |
2014-05-07 | 9588-003-0900 | ND |
2014-05-07 | 9588-004-0915 | ND |
2014-05-07 | 9588-005-0945 | ND |
2014-05-12 | 9590-008-1015 | ND |
2014-05-19 | 9590-008-0800 | ND |
2014-05-27 | 9590-008-0815 | ND |
2014-06-02 | 9590-008-0730 | ND |
2014-06-04 | 9588-002-1030 | ND |
2014-06-04 | 9588-003-0905 | ND |
2014-06-04 | 9588-004-0925 | ND |
2014-06-04 | 9588-005-0925 | ND |
2014-06-09 | 9590-008-0800 | ND |
2014-06-16 | 9590-008-0800 | ND |
2014-06-23 | 9590-008-0815 | ND |
2014-07-02 | 9588-002-0905 | ND |
2014-07-02 | 9588-003-0920 | ND |
2014-07-02 | 9588-004-0955 | ND |
2014-07-02 | 9588-005-1025 | ND |
2014-07-02 | 9590-008-0910 | ND |
2014-07-07 | 9590-008-0830 | ND |
2014-07-14 | 9590-008-0800 | ND |
2014-07-21 | 9590-008-0840 | ND |
2014-07-28 | 9590-008-0830 | ND |
2014-08-04 | 9590-008-0845 | ND |
2014-08-05 | 9588-002-1055 | ND |
2014-08-05 | 9588-003-0910 | ND |
2014-08-05 | 9588-004-1030 | ND |
2014-08-05 | 9588-005-0940 | 1.80 ppb |
2014-08-05 | 9590-800-0935 | 6.40 ppb |
2014-08-05 | 9590-801-0900 | 7.40 ppb |
2014-08-11 | 9590-008-0730 | ND |
2014-08-18 | 9590-008-0815 | ND |
2014-08-25 | 9590-008-0850 | ND |
2014-09-02 | 9590-008-0900 | ND |
2014-09-03 | 9590-002-0810 | ND |
2014-09-03 | 9590-003-0830 | ND |
2014-09-09 | 9590-008-0800 | ND |
2014-09-15 | 9590-008-0830 | ND |
2014-09-22 | 9590-008-0830 | ND |
2014-09-29 | 9590-008-0800 | ND |
2014-10-06 | 9590-008-0730 | ND |
2014-10-07 | 9590-003-0915 | ND |
2014-10-13 | 9590-008-0830 | ND |
2014-10-20 | 9590-008-0800 | ND |
2014-10-27 | 9590-008-0730 | ND |
2014-11-04 | 9590-800-0930 | 4.10 ppb |
2014-11-04 | 9590-801-0900 | 5.10 ppb |
2015-02-03 | 9590-800-1030 | 3.30 ppb |
2015-02-03 | 9590-801-0930 | 3.10 ppb |
2015-04-06 | 9590-008-1115 | ND |
2015-04-10 | 9590-002-1030 | ND |
2015-04-13 | 9590-008-0900 | ND |
2015-04-20 | 9590-008-0800 | ND |
2015-04-27 | 9590-008-0820 | ND |
2015-05-04 | 9590-008-0900 | ND |
2015-05-05 | 9590-800-0950 | 6.40 ppb |
2015-05-05 | 9590-801-0925 | 6.10 ppb |
2015-05-08 | 9590-008-1455 | ND |
2015-05-11 | 9590-008-0815 | ND |
2015-05-18 | 9590-008-0910 | ND |
2015-05-26 | 9590-008-0830 | ND |
2015-06-01 | 9588-002-1000 | ND |
2015-06-01 | 9588-003-1030 | ND |
2015-06-01 | 9588-004-0930 | ND |
2015-06-01 | 9588-005-1055 | ND |
2015-06-01 | 9590-008-1120 | ND |
2015-06-04 | 9590-008-1335 | ND |
2015-06-08 | 9590-008-1110 | ND |
2015-06-15 | 9590-008-0815 | ND |
2015-06-22 | 9590-008-0800 | ND |
2015-06-29 | 9590-008-0830 | ND |
2015-07-01 | 9588-002-1020 | ND |
2015-07-01 | 9588-004-0950 | ND |
2015-07-01 | 9588-005-0910 | ND |
2015-07-06 | 9590-008-1120 | ND |
2015-07-13 | 9590-008-0730 | ND |
2015-07-20 | 9590-008-0740 | ND |
2015-07-27 | 9590-008-0840 | ND |
2015-08-03 | 9590-008-1045 | ND |
2015-08-04 | 9588-002-0905 | ND |
2015-08-04 | 9588-003-1025 | ND |
2015-08-04 | 9588-004-0955 | ND |
2015-08-04 | 9588-005-0915 | ND |
2015-08-04 | 9590-800-0830 | 6.60 ppb |
2015-08-04 | 9590-801-0910 | 6.80 ppb |
2015-08-10 | 9590-008-1040 | ND |
2015-08-17 | 9590-008-0800 | ND |
2015-08-24 | 9590-008-0745 | ND |
2015-08-31 | 9590-008-0830 | ND |
2015-09-02 | 9590-003-1000 | ND |
2015-09-08 | 9590-008-0800 | ND |
2015-09-09 | 9590-002-1020 | ND |
2015-09-09 | 9590-005-1110 | ND |
2015-09-10 | 9590-008-1340 | ND |
2015-09-14 | 9590-008-0800 | ND |
2015-09-21 | 9590-008-1115 | ND |
2015-09-28 | 9590-008-0800 | ND |
2015-10-05 | 9590-002-0945 | ND |
2015-10-05 | 9590-003-0850 | ND |
2015-10-05 | 9590-008-0815 | ND |
2015-10-12 | 9590-008-1100 | ND |
2015-10-19 | 9590-008-0830 | ND |
2015-10-26 | 9590-008-0805 | ND |
2015-11-02 | 9590-002-0915 | ND |
2015-11-02 | 9590-003-0930 | ND |
2015-11-02 | 9590-008-0945 | ND |
2015-11-03 | 9590-800-1000 | 6.80 ppb |
2015-11-03 | 9590-801-0910 | 8.40 ppb |
2016-02-02 | 9590-800-0955 | 3.40 ppb |
2016-02-02 | 9590-801-0905 | 3.50 ppb |
2016-03-01 | 9590-003-0810 | 25.0 ppb |
2016-03-01 | 9590-008-0820 | 9.90 ppb |
2016-04-04 | 9590-005-1215 | 2.00 ppb |
2016-04-04 | 9590-008-1225 | ND |
2016-04-11 | 9590-008-0810 | ND |
2016-04-18 | 9590-008-0750 | ND |
2016-04-25 | 9590-008-0815 | ND |
2016-05-02 | 9590-008-0800 | ND |
2016-05-04 | 9590-005-0815 | ND |
2016-05-04 | 9590-800-0950 | 5.00 ppb |
2016-05-04 | 9590-801-0930 | 4.80 ppb |
2016-05-09 | 9590-008-0815 | ND |
2016-05-13 | 9588-002-0930 | ND |
2016-05-13 | 9588-003-1035 | ND |
2016-05-13 | 9588-004-1010 | ND |
2016-05-13 | 9588-005-0900 | ND |
2016-05-16 | 9590-008-0840 | ND |
2016-05-17 | 9590-003-1055 | ND |
2016-05-17 | 9590-008-1115 | ND |
2016-05-23 | 9590-008-0800 | ND |
2016-06-01 | 9588-002-1025 | ND |
2016-06-01 | 9588-003-0905 | ND |
2016-06-01 | 9588-004-0930 | ND |
2016-06-01 | 9588-005-0955 | ND |
2016-06-01 | 9590-008-0820 | ND |
2016-07-01 | 9588-002-0920 | ND |
2016-07-01 | 9588-003-0930 | ND |
2016-07-01 | 9588-004-1000 | ND |
2016-07-01 | 9588-005-1030 | ND |
2016-07-05 | 9590-008-0835 | ND |
2016-07-11 | 9590-008-0815 | ND |
2016-07-18 | 9590-008-0845 | ND |
2016-07-25 | 9590-008-0815 | ND |
2016-08-01 | 9590-008-0915 | ND |
2016-08-02 | 9590-800-1050 | 8.70 ppb |
2016-08-02 | 9590-801-1000 | 8.20 ppb |
2016-08-03 | 9588-002-0900 | ND |
2016-08-03 | 9588-003-0910 | ND |
2016-08-03 | 9588-004-0935 | ND |
2016-08-03 | 9588-005-1010 | ND |
2016-08-08 | 9590-008-0820 | ND |
2016-08-15 | 9590-008-0800 | ND |
2016-08-22 | 9590-008-0840 | ND |
2016-08-29 | 9590-008-0815 | ND |
2016-10-03 | 9590-008-0820 | ND |
2016-10-10 | 9590-008-0820 | ND |
2016-10-18 | 9590-002-0815 | ND |
2016-10-18 | 9590-003-0815 | ND |
2016-10-18 | 9590-008-0815 | ND |
2016-10-25 | 9590-008-0830 | ND |
2016-11-01 | 9590-800-1100 | 4.20 ppb |
2016-11-01 | 9590-801-1010 | 5.60 ppb |
2017-02-01 | 9590-800-0945 | 4.50 ppb |
2017-02-01 | 9590-801-0845 | 7.60 ppb |
2017-05-02 | 9590-800-1000 | ND |
2017-05-02 | 9590-801-0925 | ND |
2017-05-15 | 9590-008-0950 | ND |
2017-05-17 | 9588-002-1025 | ND |
2017-05-17 | 9588-003-0930 | ND |
2017-05-17 | 9588-004-0955 | ND |
2017-05-17 | 9588-005-1055 | ND |
2017-05-19 | 9590-008-1300 | ND |
2017-05-22 | 9590-008-0820 | ND |
2017-05-30 | 9590-008-0810 | ND |
2017-06-02 | 9588-002-1045 | ND |
2017-06-02 | 9588-003-1100 | ND |
2017-06-02 | 9588-004-1120 | ND |
2017-06-02 | 9588-005-1150 | ND |
2017-07-05 | 9590-008-0900 | ND |
2017-07-10 | 9590-008-0845 | ND |
2017-07-11 | 9588-002-0950 | ND |
2017-07-11 | 9588-003-0935 | ND |
2017-07-11 | 9588-005-1015 | ND |
2017-07-13 | 9588-004-1145 | ND |
2017-07-18 | 9590-008-0845 | ND |
2017-07-24 | 9590-008-0800 | ND |
2017-08-01 | 9590-008-0850 | ND |
2017-08-01 | 9590-800-1120 | 7.20 ppb |
2017-08-01 | 9590-801-1030 | 7.30 ppb |
2017-08-02 | 9588-002-0940 | ND |
2017-08-02 | 9588-003-0950 | ND |
2017-08-02 | 9588-004-1015 | ND |
2017-08-02 | 9588-005-1045 | ND |
2017-08-07 | 9590-008-0820 | ND |
2017-08-14 | 9590-008-0815 | ND |
2017-08-21 | 9590-008-0850 | ND |
2017-08-28 | 9590-008-0820 | ND |
2017-09-05 | 9590-008-0820 | ND |
2017-09-11 | 9590-008-0950 | ND |
2017-09-18 | 9590-008-0800 | ND |
2017-09-25 | 9590-008-0800 | ND |
2017-09-28 | 9590-002-1530 | ND |
2017-09-28 | 9590-003-1545 | ND |
2017-10-02 | 9590-008-0815 | ND |
2017-10-03 | 9590-002-0745 | ND |
2017-10-03 | 9590-003-0800 | ND |
2017-10-09 | 9590-008-0830 | ND |
2017-10-16 | 9590-008-0815 | ND |
2017-10-23 | 9590-008-0840 | ND |
2017-10-30 | 9590-008-1015 | ND |
2017-11-01 | 9590-800-0945 | 9.60 ppb |
2017-11-01 | 9590-801-0855 | 12.0 ppb |
2017-11-02 | 9590-002-0845 | ND |
2017-11-02 | 9590-003-0855 | ND |
2017-11-02 | 9590-008-0915 | ND |
2018-02-01 | 9590-800-1000 | 5.60 ppb |
2018-02-01 | 9590-801-0840 | 5.40 ppb |
2018-03-12 | 9590-002-1005 | ND |
2018-03-12 | 9590-003-1050 | 6.10 ppb |
2018-03-12 | 9590-008-1345 | 2.10 ppb |
2018-03-19 | 2920-008-0850 | 2.60 ppb |
2018-03-26 | 9590-008-1110 | 1.80 ppb |
2018-05-01 | 9590-800-1130 | 3.40 ppb |
2018-05-01 | 9590-801-1045 | 3.60 ppb |
2018-05-02 | 9588-002-0855 | ND |
2018-05-02 | 9588-003-0910 | 2.60 ppb |
2018-05-02 | 9588-004-0950 | ND |
2018-05-02 | 9588-005-1000 | ND |
2018-05-03 | 9590-008-0735 | ND |
2018-05-07 | 9590-008-0800 | 1.60 ppb |
2018-05-14 | 9590-008-0910 | ND |
2018-05-22 | 9590-008-0905 | ND |
2018-05-29 | 9590-008-1445 | ND |
2018-06-04 | 9590-008-0800 | ND |
2018-06-05 | 9588-002-0910 | ND |
2018-06-05 | 9588-003-0920 | ND |
2018-06-05 | 9588-004-0940 | ND |
2018-06-05 | 9588-005-1010 | ND |
2018-06-11 | 9590-008-0805 | ND |
2018-06-18 | 9590-008-0840 | ND |
2018-06-25 | 2920-008-0802 | ND |
2018-06-25 | 9590-008-0802 | ND |
2018-07-02 | 2920-008-0800 | ND |
2018-07-02 | 9590-008-0800 | ND |
2018-07-03 | 9588-002-0910 | ND |
2018-07-03 | 9588-003-0920 | ND |
2018-07-03 | 9588-004-0935 | ND |
2018-07-03 | 9588-005-1000 | ND |
2018-07-09 | 9590-008-0840 | ND |
2018-07-16 | 2920-008-0815 | ND |
2018-07-16 | 9590-008-0815 | ND |
2018-07-23 | 9590-008-0800 | ND |
2018-07-30 | 9590-008-0815 | ND |
2018-08-01 | 9588-002-0920 | ND |
2018-08-01 | 9588-003-0930 | ND |
2018-08-01 | 9588-004-1005 | ND |
2018-08-01 | 9588-005-1020 | ND |
2018-08-01 | 9590-800-0900 | 11.0 ppb |
2018-08-01 | 9590-801-0825 | 10.00 ppb |
2018-08-06 | 2920-008-1515 | ND |
2018-08-06 | 9590-008-1515 | ND |
2018-08-13 | 9590-008-0800 | ND |
2018-08-20 | 9590-008-0815 | ND |
2018-08-27 | 9590-008-0820 | ND |
2018-09-04 | 9590-002-0930 | ND |
2018-09-04 | 9590-003-0910 | ND |
2018-09-04 | 9590-008-0800 | ND |
2018-09-10 | 9590-008-0800 | ND |
2018-09-17 | 9590-008-0810 | ND |
2018-09-24 | 9590-008-0800 | ND |
2018-10-01 | 9590-008-1050 | ND |
2018-10-03 | 9590-002-1010 | ND |
2018-10-03 | 9590-003-1020 | ND |
2018-10-08 | 9590-008-0820 | ND |
2018-10-17 | 9590-008-0800 | ND |
2018-10-22 | 9590-008-0800 | ND |
2018-10-29 | 9590-008-0830 | ND |
2018-11-01 | 9590-800-1030 | 7.90 ppb |
2018-11-01 | 9590-801-0930 | 10.00 ppb |
2018-11-05 | 9590-008-0800 | ND |
2018-11-06 | 9590-002-0745 | ND |
2018-11-06 | 9590-003-0850 | ND |
2018-11-12 | 9590-008-0745 | ND |
2019-02-04 | 9590-800-0950 | 3.00 ppb |
2019-02-04 | 9590-801-0915 | 2.80 ppb |
2019-05-06 | 9590-008-1315 | ND |
2019-05-06 | 9590-800-0930 | 2.40 ppb |
2019-05-06 | 9590-801-0850 | 1.90 ppb |
2019-05-07 | 9588-002-0915 | ND |
2019-05-07 | 9588-003-0925 | ND |
2019-05-07 | 9588-004-0940 | ND |
2019-05-07 | 9588-005-1010 | ND |
2019-05-13 | 9590-008-0750 | ND |
2019-05-20 | 9590-008-0800 | ND |
2019-05-28 | 9590-008-0820 | ND |
2019-06-03 | 9590-008-0830 | ND |
2019-06-04 | 9588-002-0905 | ND |
2019-06-04 | 9588-003-0915 | ND |
2019-06-04 | 9588-004-0945 | ND |
2019-06-04 | 9588-005-1010 | ND |
2019-06-10 | 9590-008-0800 | ND |
2019-06-17 | 9590-008-0810 | ND |
2019-06-24 | 9590-008-0830 | ND |
2019-07-01 | 9590-008-0800 | ND |
2019-07-02 | 9588-002-0915 | ND |
2019-07-02 | 9588-003-0925 | ND |
2019-07-02 | 9588-004-0950 | ND |
2019-07-08 | 9590-008-0810 | ND |
2019-07-15 | 9590-008-0840 | ND |
2019-07-22 | 9590-008-0800 | ND |
2019-07-29 | 9590-008-0830 | ND |
2019-08-05 | 9590-008-0855 | ND |
2019-08-05 | 9590-800-1130 | 7.50 ppb |
2019-08-05 | 9590-801-1010 | 4.30 ppb |
2019-08-06 | 9588-002-0900 | ND |
2019-08-06 | 9588-003-0910 | ND |
2019-08-06 | 9588-004-0930 | ND |
2019-08-12 | 9590-008-0845 | ND |
2019-08-19 | 9590-008-0850 | ND |
2019-08-26 | 9590-008-0825 | ND |
2019-09-03 | 9590-002-0920 | ND |
2019-09-03 | 9590-003-0930 | ND |
2019-09-03 | 9588-005-1035 | ND |
2019-09-03 | 9590-008-0800 | ND |
2019-09-09 | 9590-008-0915 | ND |
2019-09-16 | 9590-008-0810 | ND |
2019-09-23 | 9590-008-0830 | ND |
2019-10-01 | 9590-008-0807 | ND |
2019-10-02 | 9590-002-1035 | ND |
2019-10-02 | 9590-003-1010 | ND |
2019-10-02 | 9588-005-0915 | ND |
2019-10-07 | 9590-008-0845 | ND |
2019-10-14 | 9590-008-0815 | ND |
2019-10-21 | 9590-008-0820 | ND |
2019-10-28 | 9590-008-0830 | ND |
2019-11-04 | 9590-800-1000 | 10.00 ppb |
2019-11-04 | 9590-801-0940 | 9.00 ppb |