Know Your Environment. Protect Your Health.

Dibromochloromethane

Northwest Harris County Municipal Utility District 19

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.567 ppb31ND - 1.70 ppb
20190.800 ppb31ND - 2.40 ppb
20200.733 ppb31ND - 2.20 ppb
20212.30 ppb331.10 ppb - 3.20 ppb
20221.07 ppb32ND - 2.20 ppb
20230.767 ppb31ND - 2.30 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
2018-05-17AE268191.70 ppb
2018-05-17AE26823ND
2018-05-17AE26742ND
2019-09-05AE82235ND
2019-11-07AE889312.40 ppb
2019-11-07AE88937ND
2020-09-01AF26035ND
2020-10-01AF29290ND
2020-10-01AF293002.20 ppb
2021-06-10AF574343.20 ppb
2021-06-10AF575372.60 ppb
2021-06-10AF575151.10 ppb
2022-05-17AF972141.000 ppb
2022-05-17AF97248ND
2022-05-17AF972502.20 ppb
2023-07-20AG49567ND
2023-07-20AG49615ND
2023-07-20AG496372.30 ppb