Know Your Environment. Protect Your Health.

Dibromochloromethane

Clayton Water Supply Corporation Plant 2

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.

 

53

Samples

0

Samples exceeding legal limit (MCL)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.53 ppb86ND - 20.6 ppb
201910.7 ppb95ND - 33.9 ppb
202017.2 ppb97ND - 45.2 ppb
20214.58 ppb95ND - 11.2 ppb
202217.8 ppb97ND - 54.8 ppb
202315.6 ppb95ND - 47.6 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
2018-03-01Q180849900220.6 ppb
2018-03-01Q180849900118.8 ppb
2018-05-24Q18209420028.23 ppb
2018-05-24Q18209420017.55 ppb
2018-08-23Q1833945001ND
2018-08-23Q1833945002ND
2018-12-14Q18517830012.51 ppb
2018-12-14Q18517830022.57 ppb
2019-02-05Q1905213001ND
2019-02-05Q1905213002ND
2019-04-30Q1917251001ND
2019-04-30Q1917251002ND
2019-08-26Q19592700016.55 ppb
2019-08-26Q19592700026.46 ppb
2019-12-17Q198033200133.9 ppb
2019-12-17Q198033200529.4 ppb
2019-12-17Q198033200420.2 ppb
2020-03-05Q200834500114.9 ppb
2020-03-05Q200834500245.2 ppb
2020-05-27Q202083800124.6 ppb
2020-05-27Q202083800226.2 ppb
2020-09-22Q2037532001ND
2020-09-22Q2037532002ND
2020-12-03Q20485570016.09 ppb
2020-12-03Q204855700316.0 ppb
2020-12-03Q204855700421.9 ppb
2021-02-24Q2104969001ND
2021-02-24Q210496900211.2 ppb
2021-04-29Q211098400110.2 ppb
2021-04-29Q21109840028.61 ppb
2021-09-28Q21265220072.35 ppb
2021-09-28Q21265220088.88 ppb
2021-09-28Q2126522009ND
2021-12-02Q2133318001ND
2021-12-02Q2133318002ND
2022-02-01Q2203640001ND
2022-02-01Q2203640002ND
2022-04-12Q221121300110.5 ppb
2022-04-12Q221121300231.0 ppb
2022-09-13Q222712100254.8 ppb
2022-09-13Q222712100146.9 ppb
2022-11-03Q223335200110.3 ppb
2022-11-03Q22333520052.32 ppb
2022-11-03Q22333520064.02 ppb
2023-02-16Q230653800123.0 ppb
2023-02-16Q230653800235.2 ppb
2023-05-03Q231680300133.3 ppb
2023-05-03Q231680300247.6 ppb
2023-07-27Q2330271001ND
2023-07-27Q2330271002ND
2023-07-27Q2330271006ND
2023-10-17Q2344253001ND
2023-10-17Q23442530021.02 ppb