Know Your Environment. Protect Your Health.

Dibromochloromethane

London Waterworks

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND60ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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
2018-02-0618039008402ND
2018-02-0618039008502ND
2018-05-0118122002202ND
2018-05-0118122002102ND
2018-07-3118213001002ND
2018-07-3118213001302ND
2018-10-2918305004202ND
2018-10-2918305004302ND
2019-01-2819031009502ND
2019-01-2819031009402ND
2019-04-2419115011302ND
2019-04-2419115011402ND
2019-07-2219206010102ND
2019-07-2219206010002ND
2020-01-2220023012502ND
2020-01-2220023012402ND
2020-04-2020114006102ND
2020-04-2020114006202ND
2020-07-2020205002002ND
2020-07-2020205001902ND
2020-10-1920296001802ND
2020-10-1920296001902ND
2021-01-2021021004902ND
2021-01-2021021005002ND
2021-04-2021112013102ND
2021-04-2021112013002ND
2021-07-1921203001602ND
2021-07-1921203001502ND
2021-10-1921294003302ND
2021-10-1921294003202ND
2022-01-1822020008202ND
2022-01-1822020008102ND
2022-04-20O197493-THM-1ND
2022-04-20O197494-THM-1ND
2022-07-19O199941-THM-1ND
2022-07-19O199942-THM-1ND
2022-10-17O202890-THM-1ND
2022-10-17O202889-THM-1ND
2023-01-18O205230-THM-1ND
2023-01-18O205231-THM-1ND
2023-04-18O208016-THM-1ND
2023-04-19O208015-THM-1ND
2023-07-17O210864-THM-1ND
2023-07-17O210863-THM-1ND
2023-10-23O213058-THM-1ND
2023-10-23O213059-THM-1ND