Dibromochloromethane
Westwego Waterworks
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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 | 3.49 ppb | 52 | 50 | ND - 7.50 ppb |
2015 | 2.96 ppb | 32 | 32 | 1.20 ppb - 4.80 ppb |
2016 | 3.44 ppb | 32 | 32 | 1.10 ppb - 5.30 ppb |
2017 | 2.88 ppb | 32 | 26 | ND - 4.50 ppb |
2018 | 3.43 ppb | 32 | 32 | 1.000 ppb - 7.70 ppb |
2019 | 1.79 ppb | 32 | 24 | ND - 4.00 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
---|---|---|
2014-02-04 | AD88743 | 1.81 ppb |
2014-02-04 | AD88743 | 1.81 ppb |
2014-03-05 | 680-99259-10 | 2.10 ppb |
2014-03-05 | 680-99259-13 | 1.80 ppb |
2014-03-05 | 680-99259-14 | 3.80 ppb |
2014-03-05 | 680-99259-15 | 1.70 ppb |
2014-03-05 | 680-99259-10 | 2.10 ppb |
2014-03-05 | 680-99259-13 | 1.80 ppb |
2014-03-05 | 680-99259-14 | 3.80 ppb |
2014-03-05 | 680-99259-15 | 1.70 ppb |
2014-03-13 | AD89680 | ND |
2014-03-13 | AD89680 | ND |
2014-06-02 | 680-102096-10 | 1.60 ppb |
2014-06-02 | 680-102096-7 | 1.90 ppb |
2014-06-02 | 680-102096-8 | 1.70 ppb |
2014-06-02 | 680-102096-9 | 1.60 ppb |
2014-06-02 | 680-102096-10 | 1.60 ppb |
2014-06-02 | 680-102096-7 | 1.90 ppb |
2014-06-02 | 680-102096-8 | 1.70 ppb |
2014-06-02 | 680-102096-9 | 1.60 ppb |
2014-06-25 | 680-102714-1 | 1.80 ppb |
2014-06-25 | 680-102714-2 | 1.90 ppb |
2014-06-25 | 680-102714-3 | 2.30 ppb |
2014-06-25 | 680-102714-4 | 2.30 ppb |
2014-06-25 | 680-102714-1 | 1.80 ppb |
2014-06-25 | 680-102714-2 | 1.90 ppb |
2014-06-25 | 680-102714-3 | 2.30 ppb |
2014-06-25 | 680-102714-4 | 2.30 ppb |
2014-07-14 | 680-103297-1 | 3.10 ppb |
2014-07-14 | 680-103297-2 | 3.20 ppb |
2014-07-14 | 680-103297-1 | 3.10 ppb |
2014-07-14 | 680-103297-2 | 3.20 ppb |
2014-08-07 | 680-104089-10 | 4.40 ppb |
2014-08-07 | 680-104089-11 | 4.80 ppb |
2014-08-07 | 680-104089-10 | 4.40 ppb |
2014-08-07 | 680-104089-11 | 4.80 ppb |
2014-09-22 | 680-105518-1 | 6.00 ppb |
2014-09-22 | 680-105518-2 | 7.40 ppb |
2014-09-22 | 680-105518-3 | 6.00 ppb |
2014-09-22 | 680-105518-4 | 7.50 ppb |
2014-09-22 | 680-105518-1 | 6.00 ppb |
2014-09-22 | 680-105518-2 | 7.40 ppb |
2014-09-22 | 680-105518-3 | 6.00 ppb |
2014-09-22 | 680-105518-4 | 7.50 ppb |
2014-12-10 | 680-108143-1 | 5.40 ppb |
2014-12-10 | 680-108143-2 | 5.60 ppb |
2014-12-10 | 680-108143-3 | 5.80 ppb |
2014-12-10 | 680-108143-4 | 5.10 ppb |
2014-12-10 | 680-108143-1 | 5.40 ppb |
2014-12-10 | 680-108143-2 | 5.60 ppb |
2014-12-10 | 680-108143-3 | 5.80 ppb |
2014-12-10 | 680-108143-4 | 5.10 ppb |
2015-03-04 | 680-110489-15 | 2.00 ppb |
2015-03-04 | 680-110489-15 | 2.00 ppb |
2015-03-05 | 680-110489-16 | 1.80 ppb |
2015-03-05 | 680-110489-17 | 1.70 ppb |
2015-03-05 | 680-110489-18 | 1.20 ppb |
2015-03-05 | 680-110489-16 | 1.80 ppb |
2015-03-05 | 680-110489-17 | 1.70 ppb |
2015-03-05 | 680-110489-18 | 1.20 ppb |
2015-06-03 | 680-113260-15 | 2.60 ppb |
2015-06-03 | 680-113260-16 | 2.40 ppb |
2015-06-03 | 680-113260-17 | 2.60 ppb |
2015-06-03 | 680-113260-18 | 2.60 ppb |
2015-06-03 | 680-113260-15 | 2.60 ppb |
2015-06-03 | 680-113260-16 | 2.40 ppb |
2015-06-03 | 680-113260-17 | 2.60 ppb |
2015-06-03 | 680-113260-18 | 2.60 ppb |
2015-09-08 | 680-116640-10 | 4.30 ppb |
2015-09-08 | 680-116640-11 | 4.60 ppb |
2015-09-08 | 680-116640-12 | 4.80 ppb |
2015-09-08 | 680-116640-9 | 4.50 ppb |
2015-09-08 | 680-116640-10 | 4.30 ppb |
2015-09-08 | 680-116640-11 | 4.60 ppb |
2015-09-08 | 680-116640-12 | 4.80 ppb |
2015-09-08 | 680-116640-9 | 4.50 ppb |
2015-12-02 | 680-119635-10 | 2.70 ppb |
2015-12-02 | 680-119635-11 | 3.60 ppb |
2015-12-02 | 680-119635-12 | 2.80 ppb |
2015-12-02 | 680-119635-13 | 3.10 ppb |
2015-12-02 | 680-119635-10 | 2.70 ppb |
2015-12-02 | 680-119635-11 | 3.60 ppb |
2015-12-02 | 680-119635-12 | 2.80 ppb |
2015-12-02 | 680-119635-13 | 3.10 ppb |
2016-03-02 | 680-122526-1 | 1.30 ppb |
2016-03-02 | 680-122526-2 | 1.10 ppb |
2016-03-02 | 680-122526-3 | 1.30 ppb |
2016-03-02 | 680-122526-4 | 1.40 ppb |
2016-03-02 | 680-122526-1 | 1.30 ppb |
2016-03-02 | 680-122526-2 | 1.10 ppb |
2016-03-02 | 680-122526-3 | 1.30 ppb |
2016-03-02 | 680-122526-4 | 1.40 ppb |
2016-06-13 | 680-126447-4 | 2.90 ppb |
2016-06-13 | 680-126447-5 | 3.00 ppb |
2016-06-13 | 680-126447-6 | 2.70 ppb |
2016-06-13 | 680-126447-7 | 2.70 ppb |
2016-06-13 | 680-126447-4 | 2.90 ppb |
2016-06-13 | 680-126447-5 | 3.00 ppb |
2016-06-13 | 680-126447-6 | 2.70 ppb |
2016-06-13 | 680-126447-7 | 2.70 ppb |
2016-09-16 | 680-129934-1 | 4.20 ppb |
2016-09-16 | 680-129934-2 | 4.90 ppb |
2016-09-16 | 680-129934-3 | 4.70 ppb |
2016-09-16 | 680-129934-4 | 4.30 ppb |
2016-09-16 | 680-129934-1 | 4.20 ppb |
2016-09-16 | 680-129934-2 | 4.90 ppb |
2016-09-16 | 680-129934-3 | 4.70 ppb |
2016-09-16 | 680-129934-4 | 4.30 ppb |
2016-12-09 | 680-133119-1 | 5.10 ppb |
2016-12-09 | 680-133119-2 | 5.10 ppb |
2016-12-09 | 680-133119-3 | 5.00 ppb |
2016-12-09 | 680-133119-4 | 5.30 ppb |
2016-12-09 | 680-133119-1 | 5.10 ppb |
2016-12-09 | 680-133119-2 | 5.10 ppb |
2016-12-09 | 680-133119-3 | 5.00 ppb |
2016-12-09 | 680-133119-4 | 5.30 ppb |
2017-03-06 | 35299475003 | 4.20 ppb |
2017-03-06 | 35299475004 | 2.20 ppb |
2017-03-06 | 35299475005 | 3.60 ppb |
2017-03-06 | 35299475003 | 4.20 ppb |
2017-03-06 | 35299475004 | 2.20 ppb |
2017-03-06 | 35299475005 | 3.60 ppb |
2017-03-09 | 35300108005 | 4.50 ppb |
2017-03-09 | 35300108005 | 4.50 ppb |
2017-06-05 | 35316953001 | ND |
2017-06-05 | 35316953002 | 1.10 ppb |
2017-06-05 | 35316953003 | ND |
2017-06-05 | 35316953004 | ND |
2017-06-05 | 35316953001 | ND |
2017-06-05 | 35316953002 | 1.10 ppb |
2017-06-05 | 35316953003 | ND |
2017-06-05 | 35316953004 | ND |
2017-09-14 | 35335591001 | 3.60 ppb |
2017-09-14 | 35335591002 | 3.30 ppb |
2017-09-14 | 35335591003 | 3.60 ppb |
2017-09-14 | 35335591004 | 3.60 ppb |
2017-09-14 | 35335591001 | 3.60 ppb |
2017-09-14 | 35335591002 | 3.30 ppb |
2017-09-14 | 35335591003 | 3.60 ppb |
2017-09-14 | 35335591004 | 3.60 ppb |
2017-12-04 | 35361526001 | 4.00 ppb |
2017-12-04 | 35361526002 | 3.90 ppb |
2017-12-04 | 35361526003 | 4.40 ppb |
2017-12-04 | 35361526004 | 4.00 ppb |
2017-12-04 | 35361526001 | 4.00 ppb |
2017-12-04 | 35361526002 | 3.90 ppb |
2017-12-04 | 35361526003 | 4.40 ppb |
2017-12-04 | 35361526004 | 4.00 ppb |
2018-03-07 | 35378732001 | 1.20 ppb |
2018-03-07 | 35378732002 | 1.30 ppb |
2018-03-07 | 35378732003 | 1.000 ppb |
2018-03-07 | 35378732004 | 1.20 ppb |
2018-03-07 | 35378732001 | 1.20 ppb |
2018-03-07 | 35378732002 | 1.30 ppb |
2018-03-07 | 35378732003 | 1.000 ppb |
2018-03-07 | 35378732004 | 1.20 ppb |
2018-06-06 | 35396804001 | 3.10 ppb |
2018-06-06 | 35396804002 | 3.00 ppb |
2018-06-06 | 35396804003 | 3.60 ppb |
2018-06-06 | 35396804004 | 3.90 ppb |
2018-06-06 | 35396804001 | 3.10 ppb |
2018-06-06 | 35396804002 | 3.00 ppb |
2018-06-06 | 35396804003 | 3.60 ppb |
2018-06-06 | 35396804004 | 3.90 ppb |
2018-09-06 | 35416140001 | 7.60 ppb |
2018-09-06 | 35416140002 | 7.60 ppb |
2018-09-06 | 35416140003 | 6.70 ppb |
2018-09-06 | 35416140004 | 7.70 ppb |
2018-09-06 | 35416140001 | 7.60 ppb |
2018-09-06 | 35416140002 | 7.60 ppb |
2018-09-06 | 35416140003 | 6.70 ppb |
2018-09-06 | 35416140004 | 7.70 ppb |
2018-12-05 | 35435394001 | 1.80 ppb |
2018-12-05 | 35435394002 | 1.70 ppb |
2018-12-05 | 35435394003 | 1.80 ppb |
2018-12-05 | 35435394004 | 1.70 ppb |
2018-12-05 | 35435394001 | 1.80 ppb |
2018-12-05 | 35435394002 | 1.70 ppb |
2018-12-05 | 35435394003 | 1.80 ppb |
2018-12-05 | 35435394004 | 1.70 ppb |
2019-03-08 | 35453029001 | ND |
2019-03-08 | 35453029002 | ND |
2019-03-08 | 35453029003 | ND |
2019-03-08 | 35453029004 | ND |
2019-03-08 | 35453029001 | ND |
2019-03-08 | 35453029002 | ND |
2019-03-08 | 35453029003 | ND |
2019-03-08 | 35453029004 | ND |
2019-06-07 | 35473886001 | 1.30 ppb |
2019-06-07 | 35473886002 | 1.30 ppb |
2019-06-07 | 35473886003 | 1.40 ppb |
2019-06-07 | 35473886004 | 1.30 ppb |
2019-06-07 | 35473886001 | 1.30 ppb |
2019-06-07 | 35473886002 | 1.30 ppb |
2019-06-07 | 35473886003 | 1.40 ppb |
2019-06-07 | 35473886004 | 1.30 ppb |
2019-09-06 | 35495690001 | 3.30 ppb |
2019-09-06 | 35495690002 | 3.70 ppb |
2019-09-06 | 35495690003 | 4.00 ppb |
2019-09-06 | 35495690004 | 3.90 ppb |
2019-09-06 | 35495690001 | 3.30 ppb |
2019-09-06 | 35495690002 | 3.70 ppb |
2019-09-06 | 35495690003 | 4.00 ppb |
2019-09-06 | 35495690004 | 3.90 ppb |
2019-12-05 | 35516857001 | 2.30 ppb |
2019-12-05 | 35516857002 | 2.20 ppb |
2019-12-05 | 35516857003 | 2.00 ppb |
2019-12-05 | 35516857004 | 2.00 ppb |
2019-12-05 | 35516857001 | 2.30 ppb |
2019-12-05 | 35516857002 | 2.20 ppb |
2019-12-05 | 35516857003 | 2.00 ppb |
2019-12-05 | 35516857004 | 2.00 ppb |