Know Your Environment. Protect Your Health.

Bromodichloromethane

Lake Bruin Water District #1

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

64

Samples

0

Samples exceeding legal limit (MCL)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.313 ppb164ND - 1.30 ppb
20190.150 ppb162ND - 1.20 ppb
20200.986 ppb86ND - 2.30 ppb
20211.11 ppb86ND - 2.20 ppb
20229.21 ppb881.30 ppb - 32.0 ppb
20237.96 ppb881.20 ppb - 27.4 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-1635375145001ND
2018-02-1635375145002ND
2018-02-1635375145002ND
2018-02-1635375145001ND
2018-05-21353939250021.20 ppb
2018-05-21353939250011.30 ppb
2018-05-21353939250021.20 ppb
2018-05-21353939250011.30 ppb
2018-08-0135408795001ND
2018-08-0135408795002ND
2018-08-0135408795001ND
2018-08-0135408795002ND
2018-11-0735430445001ND
2018-11-0735430445001ND
2018-11-0735430445002ND
2018-11-0735430445002ND
2019-02-1135448423001ND
2019-02-1135448423002ND
2019-02-1135448423001ND
2019-02-1135448423002ND
2019-05-0135465891001ND
2019-05-0135465891002ND
2019-05-0135465891001ND
2019-05-0135465891002ND
2019-08-0135487175002ND
2019-08-01354871750011.20 ppb
2019-08-01354871750011.20 ppb
2019-08-0135487175002ND
2019-11-0435510917001ND
2019-11-0435510917002ND
2019-11-0435510917002ND
2019-11-0435510917001ND
2020-02-0335528908002ND
2020-02-0335528908001ND
2020-05-04355486790010.860 ppb
2020-05-04355486790020.730 ppb
2020-08-03355687960011.40 ppb
2020-08-03355687960021.10 ppb
2020-11-19355940770012.30 ppb
2020-11-19355940770021.50 ppb
2021-02-26356157210012.10 ppb
2021-02-26356157210022.20 ppb
2021-05-2135636227001ND
2021-05-2135636227002ND
2021-08-03356541420011.20 ppb
2021-08-03356541420021.10 ppb
2021-11-10356788540011.20 ppb
2021-11-10356788540021.10 ppb
2022-02-15356984600022.00 ppb
2022-02-15356984600011.90 ppb
2022-05-02357162680021.30 ppb
2022-05-02357162680011.60 ppb
2022-08-013573779600132.0 ppb
2022-08-013573779600230.8 ppb
2022-11-14357615840012.20 ppb
2022-11-14357615840021.90 ppb
2023-02-053577927200127.4 ppb
2023-02-053577927200222.9 ppb
2023-05-01357977610011.20 ppb
2023-05-01357977610021.20 ppb
2023-08-14358226260012.70 ppb
2023-08-14358226260022.20 ppb
2023-11-06358417490013.00 ppb
2023-11-06358417490023.10 ppb