Know Your Environment. Protect Your Health.

Dibromochloromethane

The Reserve

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.01 ppb53ND - 2.18 ppb
20191.57 ppb54ND - 2.51 ppb
20200.790 ppb52ND - 2.04 ppb
20210.694 ppb52ND - 1.87 ppb
20221.77 ppb551.55 ppb - 1.97 ppb
20231.79 ppb551.21 ppb - 2.35 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2018-03-20Q18110410021.06 ppb
2018-03-20Q18110410011.80 ppb
2018-05-25Q1821197001ND
2018-08-29Q1834583001ND
2018-11-20Q18475340012.18 ppb
2019-03-26Q19121770011.54 ppb
2019-03-26Q19121770082.51 ppb
2019-06-04Q19312640012.23 ppb
2019-09-09Q1962808001ND
2019-12-04Q19792020011.55 ppb
2020-03-18Q2012016001ND
2020-03-18Q2012016007ND
2020-06-11Q2023585001ND
2020-09-28Q20381390011.91 ppb
2020-12-11Q20494360012.04 ppb
2021-03-26Q2107985001ND
2021-06-10Q2115266001ND
2021-06-10Q21152660031.60 ppb
2021-09-22Q2125992001ND
2021-12-14Q21352300011.87 ppb
2022-03-14Q22084620031.55 ppb
2022-03-14Q22084620081.82 ppb
2022-05-26Q22152620011.63 ppb
2022-09-23Q22287750011.97 ppb
2022-12-08Q22370170011.90 ppb
2023-03-06Q23086100011.97 ppb
2023-05-18Q23187640012.35 ppb
2023-07-27Q23302590011.21 ppb
2023-07-27Q23302590081.72 ppb
2023-11-03Q23474150011.68 ppb