Know Your Environment. Protect Your Health.

Dibromochloromethane

Mill River Water District

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)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb220.470 ppb - 0.529 ppb
20190.943 ppb220.836 ppb - 1.05 ppb
20200.533 ppb43ND - 1.000 ppb
20211.17 ppb43ND - 3.49 ppb
20220.428 ppb42ND - 1.10 ppb
20230.382 ppb32ND - 0.610 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
2018-08-13AU17305-DBP20.470 ppb
2018-08-13AU17306-DBP20.529 ppb
2019-08-09AV16948-DBP20.836 ppb
2019-08-09AV16949-DBP21.05 ppb
2020-06-17AW11407-DBP20.630 ppb
2020-08-10AW15257-DBP2ND
2020-08-10AW15258-DBP21.000 ppb
2020-12-09AW23564-DBP20.500 ppb
2021-05-19AX09623-DBP2ND
2021-08-10AX16107-DBP20.540 ppb
2021-08-10AX16106-DBP20.630 ppb
2021-12-09AX24400-DBP23.49 ppb
2022-06-08AY09687-DBP2ND
2022-08-10AY14158-DBP20.611 ppb
2022-08-10AY14157-DBP2ND
2022-11-02AY19818-DBP21.10 ppb
2023-08-10AZ14697-DBP20.535 ppb
2023-08-10AZ14698-DBP2ND
2023-10-17AZ19164-DBP20.610 ppb