Know Your Environment. Protect Your Health.

Dibromochloromethane

Quincy Water Department City Of

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.79 ppb111.79 ppb
20191.26 ppb21ND - 2.52 ppb
2020N/A00N/A
20211.37 ppb32ND - 3.43 ppb
20220.489 ppb82ND - 3.16 ppb
20233.25 ppb552.45 ppb - 4.21 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
2018-09-181.79 ppb
2019-09-092.52 ppb
2019-10-02ND
2021-06-164131878ND
2021-06-1641325303.43 ppb
2021-09-1741965480.690 ppb
2022-03-0442584663.16 ppb
2022-03-224258506ND
2022-08-164338187ND
2022-08-164338185ND
2022-09-0845109630.750 ppb
2022-09-134344891ND
2022-10-064356345ND
2022-10-064356344ND
2023-03-0944278062.89 ppb
2023-04-1844644583.78 ppb
2023-09-2645260822.45 ppb
2023-10-0345261554.21 ppb
2023-10-1245315692.92 ppb