Know Your Environment. Protect Your Health.

Dibromochloromethane

Acton Water Royal Oaks

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.49 ppb221.11 ppb - 1.87 ppb
20190.715 ppb21ND - 1.43 ppb
20200.875 ppb21ND - 1.75 ppb
2021ND20ND
2022ND20ND
20234.93 ppb21ND - 9.86 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
2018-09-27Q18386420011.87 ppb
2018-10-03Q18395610011.11 ppb
2019-08-27Q19598630041.43 ppb
2019-08-27Q1959863006ND
2020-07-30Q20298960041.75 ppb
2020-07-30Q2029896005ND
2021-06-23Q2116455002ND
2021-06-23Q2116455005ND
2022-09-26Q2228723001ND
2022-11-28Q2235235004ND
2023-08-15Q23340340019.86 ppb
2023-11-30Q2351054001ND