Know Your Environment. Protect Your Health.

Dibromochloromethane

Wye Mountain Water Association

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.000 ppb86ND - 1.50 ppb
20190.138 ppb81ND - 1.10 ppb
20200.325 ppb82ND - 1.30 ppb
20210.713 ppb84ND - 1.80 ppb
20221.05 ppb86ND - 1.85 ppb
20230.266 ppb82ND - 1.08 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
2018-02-14180450016021.30 ppb
2018-02-14180450017021.30 ppb
2018-05-0918129002702ND
2018-05-0918129002802ND
2018-08-13182280043021.20 ppb
2018-08-13182280042021.30 ppb
2018-10-31183040022021.50 ppb
2018-10-31183040021021.40 ppb
2019-01-3019031008202ND
2019-01-3019031006302ND
2019-04-2419115009102ND
2019-04-2419115009202ND
2019-07-2419205004401ND
2019-07-2419205004501ND
2019-10-21192950013021.10 ppb
2019-10-2119295001202ND
2020-02-0320037012902ND
2020-02-0320037013002ND
2020-04-2020114003502ND
2020-04-2020114003602ND
2020-08-10202260079021.30 ppb
2020-08-10202260078021.30 ppb
2020-10-2620303012902ND
2020-10-2620303012802ND
2021-02-0821041001802ND
2021-02-0821041001902ND
2021-05-1021133005302ND
2021-05-1021133005402ND
2021-08-09212240107021.000 ppb
2021-08-09212240106021.20 ppb
2021-10-27213010109021.80 ppb
2021-10-27213010108021.70 ppb
2022-02-0922041003702ND
2022-02-0922041003602ND
2022-05-11O198011-THM-11.13 ppb
2022-05-11O198010-THM-11.16 ppb
2022-08-15O200964-THM-11.36 ppb
2022-08-15O200965-THM-11.20 ppb
2022-11-14O203873-THM-11.71 ppb
2022-11-14O203874-THM-11.85 ppb
2023-02-13O206473-THM-1ND
2023-02-13O206472-THM-1ND
2023-05-09O208880-THM-1ND
2023-05-09O208879-THM-1ND
2023-08-09O211407-THM-11.05 ppb
2023-08-09O211408-THM-11.08 ppb
2023-10-31O213643-THM-1ND
2023-10-31O213644-THM-1ND