Know Your Environment. Protect Your Health.

Dibromochloromethane

Lakeshore Water System

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.880 ppb32ND - 1.54 ppb
20190.627 ppb31ND - 1.88 ppb
20200.750 ppb32ND - 1.23 ppb
20212.59 ppb32ND - 4.34 ppb
20221.87 ppb31ND - 5.60 ppb
20230.696 ppb52ND - 2.38 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
2018-09-25Q18383440011.10 ppb
2018-10-25Q1842857002ND
2018-10-25Q18428570031.54 ppb
2019-09-18Q19670450011.88 ppb
2019-10-22Q1973213002ND
2019-10-22Q1973213004ND
2020-09-17Q20372420011.02 ppb
2020-11-30Q20473850011.23 ppb
2020-11-30Q2047385003ND
2021-07-20Q21189540093.42 ppb
2021-07-20Q2118954003ND
2021-12-06Q21336650064.34 ppb
2022-09-06Q22263040015.60 ppb
2022-10-05Q2230095002ND
2022-10-05Q2230095004ND
2023-05-03Q23167870012.38 ppb
2023-05-03Q23167870091.10 ppb
2023-08-21Q2335107003ND
2023-09-18Q2339829001ND
2023-11-02Q2347035001ND