Know Your Environment. Protect Your Health.

Dibromochloromethane

Shady Grove Water Supply Corporation

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.242 ppb51ND - 1.21 ppb
20190.668 ppb85ND - 1.15 ppb
20201.12 ppb881.000 ppb - 1.25 ppb
20210.438 ppb83ND - 1.31 ppb
20221.22 ppb881.02 ppb - 1.49 ppb
20231.28 ppb881.14 ppb - 1.37 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
2018-05-10Q18193210011.21 ppb
2018-08-09Q1831974001ND
2018-08-09Q1831974002ND
2018-11-06Q1844319001ND
2018-11-06Q1844319002ND
2019-03-07Q19099530011.000 ppb
2019-03-07Q1909953002ND
2019-05-28Q19287510011.10 ppb
2019-05-28Q19287510021.08 ppb
2019-09-23Q1967450001ND
2019-09-23Q1967450002ND
2019-11-26Q19782780041.01 ppb
2019-11-26Q19782780031.15 ppb
2020-02-12Q20057110011.07 ppb
2020-02-12Q20057110021.18 ppb
2020-05-26Q20206360011.14 ppb
2020-05-26Q20206360021.07 ppb
2020-08-04Q20303650031.25 ppb
2020-08-04Q20303650041.24 ppb
2020-12-03Q20484590011.000 ppb
2020-12-03Q20484590021.02 ppb
2021-03-25Q21077890021.06 ppb
2021-03-25Q2107789001ND
2021-06-15Q2115547001ND
2021-06-15Q2115547002ND
2021-09-07Q21241890011.31 ppb
2021-09-07Q21241890021.13 ppb
2021-11-03Q2130889002ND
2021-11-03Q2130889003ND
2022-02-18Q22062020031.13 ppb
2022-02-18Q22062020041.02 ppb
2022-04-25Q22123430011.12 ppb
2022-04-25Q22123430021.13 ppb
2022-07-20Q22207740011.32 ppb
2022-07-20Q22207740021.25 ppb
2022-10-04Q22301130011.49 ppb
2022-10-04Q22301130021.28 ppb
2023-01-17Q23021970011.36 ppb
2023-01-17Q23021970021.23 ppb
2023-05-30Q23199630011.37 ppb
2023-05-30Q23199630021.36 ppb
2023-08-21Q23351220011.23 ppb
2023-08-21Q23351220021.37 ppb
2023-11-01Q23468470011.14 ppb
2023-11-01Q23468470021.21 ppb