Bromoform
Cecilia Water Corporation
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.
192
Samples
0
Samples exceeding legal limit (MCL)
78
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 | 0.321 ppb | 32 | 16 | ND - 0.860 ppb |
| 2015 | 0.383 ppb | 32 | 14 | ND - 2.00 ppb |
| 2016 | 0.390 ppb | 32 | 18 | ND - 1.10 ppb |
| 2017 | 1.00 ppb | 32 | 14 | ND - 4.70 ppb |
| 2018 | 0.701 ppb | 32 | 18 | ND - 1.50 ppb |
| 2019 | 0.578 ppb | 32 | 14 | ND - 1.60 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 |
|---|---|---|
| 2014-03-05 | 680-99196-1 | ND |
| 2014-03-05 | 680-99196-2 | 0.500 ppb |
| 2014-03-05 | 680-99196-3 | 0.460 ppb |
| 2014-03-05 | 680-99196-4 | ND |
| 2014-03-05 | 680-99196-1 | ND |
| 2014-03-05 | 680-99196-2 | 0.500 ppb |
| 2014-03-05 | 680-99196-3 | 0.460 ppb |
| 2014-03-05 | 680-99196-4 | ND |
| 2014-06-09 | 680-102206-1 | ND |
| 2014-06-09 | 680-102206-2 | 0.560 ppb |
| 2014-06-09 | 680-102206-3 | 0.480 ppb |
| 2014-06-09 | 680-102206-4 | ND |
| 2014-06-09 | 680-102206-1 | ND |
| 2014-06-09 | 680-102206-2 | 0.560 ppb |
| 2014-06-09 | 680-102206-3 | 0.480 ppb |
| 2014-06-09 | 680-102206-4 | ND |
| 2014-09-08 | 680-105115-10 | ND |
| 2014-09-08 | 680-105115-7 | ND |
| 2014-09-08 | 680-105115-8 | 0.820 ppb |
| 2014-09-08 | 680-105115-9 | 0.750 ppb |
| 2014-09-08 | 680-105115-10 | ND |
| 2014-09-08 | 680-105115-7 | ND |
| 2014-09-08 | 680-105115-8 | 0.820 ppb |
| 2014-09-08 | 680-105115-9 | 0.750 ppb |
| 2014-12-09 | 680-108162-1 | ND |
| 2014-12-09 | 680-108162-2 | 0.860 ppb |
| 2014-12-09 | 680-108162-3 | 0.700 ppb |
| 2014-12-09 | 680-108162-4 | ND |
| 2014-12-09 | 680-108162-1 | ND |
| 2014-12-09 | 680-108162-2 | 0.860 ppb |
| 2014-12-09 | 680-108162-3 | 0.700 ppb |
| 2014-12-09 | 680-108162-4 | ND |
| 2015-03-09 | 680-110526-1 | ND |
| 2015-03-09 | 680-110526-2 | 0.490 ppb |
| 2015-03-09 | 680-110526-3 | 0.620 ppb |
| 2015-03-09 | 680-110526-4 | ND |
| 2015-03-09 | 680-110526-1 | ND |
| 2015-03-09 | 680-110526-2 | 0.490 ppb |
| 2015-03-09 | 680-110526-3 | 0.620 ppb |
| 2015-03-09 | 680-110526-4 | ND |
| 2015-06-02 | 680-113226-10 | 1.60 ppb |
| 2015-06-02 | 680-113226-11 | 2.00 ppb |
| 2015-06-02 | 680-113226-12 | ND |
| 2015-06-02 | 680-113226-9 | ND |
| 2015-06-02 | 680-113226-10 | 1.60 ppb |
| 2015-06-02 | 680-113226-11 | 2.00 ppb |
| 2015-06-02 | 680-113226-12 | ND |
| 2015-06-02 | 680-113226-9 | ND |
| 2015-09-10 | 680-116673-10 | ND |
| 2015-09-10 | 680-116673-7 | ND |
| 2015-09-10 | 680-116673-8 | 0.410 ppb |
| 2015-09-10 | 680-116673-9 | ND |
| 2015-09-10 | 680-116673-10 | ND |
| 2015-09-10 | 680-116673-7 | ND |
| 2015-09-10 | 680-116673-8 | 0.410 ppb |
| 2015-09-10 | 680-116673-9 | ND |
| 2015-12-09 | 680-119947-10 | ND |
| 2015-12-09 | 680-119947-7 | ND |
| 2015-12-09 | 680-119947-8 | 0.490 ppb |
| 2015-12-09 | 680-119947-9 | 0.510 ppb |
| 2015-12-09 | 680-119947-10 | ND |
| 2015-12-09 | 680-119947-7 | ND |
| 2015-12-09 | 680-119947-8 | 0.490 ppb |
| 2015-12-09 | 680-119947-9 | 0.510 ppb |
| 2016-03-09 | 680-122913-1 | ND |
| 2016-03-09 | 680-122913-2 | 0.470 ppb |
| 2016-03-09 | 680-122913-3 | ND |
| 2016-03-09 | 680-122913-4 | ND |
| 2016-03-09 | 680-122913-1 | ND |
| 2016-03-09 | 680-122913-2 | 0.470 ppb |
| 2016-03-09 | 680-122913-3 | ND |
| 2016-03-09 | 680-122913-4 | ND |
| 2016-06-07 | 680-126218-1 | 0.300 ppb |
| 2016-06-07 | 680-126218-2 | 1.10 ppb |
| 2016-06-07 | 680-126218-3 | 0.920 ppb |
| 2016-06-07 | 680-126218-4 | ND |
| 2016-06-07 | 680-126218-1 | 0.300 ppb |
| 2016-06-07 | 680-126218-2 | 1.10 ppb |
| 2016-06-07 | 680-126218-3 | 0.920 ppb |
| 2016-06-07 | 680-126218-4 | ND |
| 2016-09-13 | 680-129918-6 | 0.610 ppb |
| 2016-09-13 | 680-129918-7 | 0.640 ppb |
| 2016-09-13 | 680-129918-8 | 0.750 ppb |
| 2016-09-13 | 680-129918-9 | ND |
| 2016-09-13 | 680-129918-6 | 0.610 ppb |
| 2016-09-13 | 680-129918-7 | 0.640 ppb |
| 2016-09-13 | 680-129918-8 | 0.750 ppb |
| 2016-09-13 | 680-129918-9 | ND |
| 2016-12-07 | 680-132981-1 | ND |
| 2016-12-07 | 680-132981-2 | 0.760 ppb |
| 2016-12-07 | 680-132981-3 | 0.690 ppb |
| 2016-12-07 | 680-132981-4 | ND |
| 2016-12-07 | 680-132981-1 | ND |
| 2016-12-07 | 680-132981-2 | 0.760 ppb |
| 2016-12-07 | 680-132981-3 | 0.690 ppb |
| 2016-12-07 | 680-132981-4 | ND |
| 2017-03-10 | 35300160001 | ND |
| 2017-03-10 | 35300160002 | ND |
| 2017-03-10 | 35300160003 | ND |
| 2017-03-10 | 35300160004 | ND |
| 2017-03-10 | 35300160001 | ND |
| 2017-03-10 | 35300160002 | ND |
| 2017-03-10 | 35300160003 | ND |
| 2017-03-10 | 35300160004 | ND |
| 2017-06-20 | 35319738003 | ND |
| 2017-06-20 | 35319738004 | 0.660 ppb |
| 2017-06-20 | 35319738005 | 0.690 ppb |
| 2017-06-20 | 35319738006 | ND |
| 2017-06-20 | 35319738003 | ND |
| 2017-06-20 | 35319738004 | 0.660 ppb |
| 2017-06-20 | 35319738005 | 0.690 ppb |
| 2017-06-20 | 35319738006 | ND |
| 2017-09-08 | 35335308013 | 4.70 ppb |
| 2017-09-08 | 35335308014 | 4.40 ppb |
| 2017-09-08 | 35335308015 | 3.20 ppb |
| 2017-09-08 | 35335308016 | ND |
| 2017-09-08 | 35335308013 | 4.70 ppb |
| 2017-09-08 | 35335308014 | 4.40 ppb |
| 2017-09-08 | 35335308015 | 3.20 ppb |
| 2017-09-08 | 35335308016 | ND |
| 2017-12-14 | 35363777001 | ND |
| 2017-12-14 | 35363777002 | 1.30 ppb |
| 2017-12-14 | 35363777003 | 1.10 ppb |
| 2017-12-14 | 35363777004 | ND |
| 2017-12-14 | 35363777001 | ND |
| 2017-12-14 | 35363777002 | 1.30 ppb |
| 2017-12-14 | 35363777003 | 1.10 ppb |
| 2017-12-14 | 35363777004 | ND |
| 2018-03-15 | 35380575001 | ND |
| 2018-03-15 | 35380575002 | 1.30 ppb |
| 2018-03-15 | 35380575003 | 1.40 ppb |
| 2018-03-15 | 35380575004 | ND |
| 2018-03-15 | 35380575001 | ND |
| 2018-03-15 | 35380575002 | 1.30 ppb |
| 2018-03-15 | 35380575003 | 1.40 ppb |
| 2018-03-15 | 35380575004 | ND |
| 2018-06-21 | 35400074001 | ND |
| 2018-06-21 | 35400074002 | 1.40 ppb |
| 2018-06-21 | 35400074003 | 1.40 ppb |
| 2018-06-21 | 35400074004 | ND |
| 2018-06-21 | 35400074001 | ND |
| 2018-06-21 | 35400074002 | 1.40 ppb |
| 2018-06-21 | 35400074003 | 1.40 ppb |
| 2018-06-21 | 35400074004 | ND |
| 2018-09-06 | 35416347001 | ND |
| 2018-09-06 | 35416347002 | 0.960 ppb |
| 2018-09-06 | 35416347003 | 0.900 ppb |
| 2018-09-06 | 35416347004 | ND |
| 2018-09-06 | 35416347001 | ND |
| 2018-09-06 | 35416347002 | 0.960 ppb |
| 2018-09-06 | 35416347003 | 0.900 ppb |
| 2018-09-06 | 35416347004 | ND |
| 2018-12-05 | 35435801001 | 1.40 ppb |
| 2018-12-05 | 35435801002 | 1.50 ppb |
| 2018-12-05 | 35435801003 | 0.950 ppb |
| 2018-12-05 | 35435801004 | ND |
| 2018-12-05 | 35435801001 | 1.40 ppb |
| 2018-12-05 | 35435801002 | 1.50 ppb |
| 2018-12-05 | 35435801003 | 0.950 ppb |
| 2018-12-05 | 35435801004 | ND |
| 2019-03-15 | 35454617001 | 1.60 ppb |
| 2019-03-15 | 35454617002 | 1.50 ppb |
| 2019-03-15 | 35454617003 | ND |
| 2019-03-15 | 35454617004 | ND |
| 2019-03-15 | 35454617001 | 1.60 ppb |
| 2019-03-15 | 35454617002 | 1.50 ppb |
| 2019-03-15 | 35454617003 | ND |
| 2019-03-15 | 35454617004 | ND |
| 2019-06-13 | 35475679001 | 1.40 ppb |
| 2019-06-13 | 35475679002 | ND |
| 2019-06-13 | 35475679003 | 1.60 ppb |
| 2019-06-13 | 35475679004 | ND |
| 2019-06-13 | 35475679001 | 1.40 ppb |
| 2019-06-13 | 35475679002 | ND |
| 2019-06-13 | 35475679003 | 1.60 ppb |
| 2019-06-13 | 35475679004 | ND |
| 2019-09-11 | 35497782001 | ND |
| 2019-09-11 | 35497782002 | ND |
| 2019-09-11 | 35497782003 | 1.40 ppb |
| 2019-09-11 | 35497782004 | ND |
| 2019-09-11 | 35497782001 | ND |
| 2019-09-11 | 35497782002 | ND |
| 2019-09-11 | 35497782003 | 1.40 ppb |
| 2019-09-11 | 35497782004 | ND |
| 2019-12-12 | 35518911001 | 0.910 ppb |
| 2019-12-12 | 35518911002 | 0.840 ppb |
| 2019-12-12 | 35518911003 | ND |
| 2019-12-12 | 35518911004 | ND |
| 2019-12-12 | 35518911001 | 0.910 ppb |
| 2019-12-12 | 35518911002 | 0.840 ppb |
| 2019-12-12 | 35518911003 | ND |
| 2019-12-12 | 35518911004 | ND |