Know Your Environment. Protect Your Health.

Dibromochloromethane

Vivian Water System

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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.673 ppb168ND - 2.20 ppb
20191.83 ppb164ND - 7.80 ppb
20201.46 ppb95ND - 4.30 ppb
20211.98 ppb880.910 ppb - 3.80 ppb
20222.73 ppb881.30 ppb - 6.30 ppb
20230.873 ppb86ND - 2.20 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
2018-01-25353706500010.670 ppb
2018-01-25353706500020.710 ppb
2018-01-25353706500020.710 ppb
2018-01-25353706500010.670 ppb
2018-04-0535384643002ND
2018-04-0535384643001ND
2018-04-0535384643002ND
2018-04-0535384643001ND
2018-07-12354043630012.20 ppb
2018-07-12354043630021.80 ppb
2018-07-12354043630012.20 ppb
2018-07-12354043630021.80 ppb
2018-10-0435422546001ND
2018-10-0435422546001ND
2018-10-0435422546002ND
2018-10-0435422546002ND
2019-01-1035441823001ND
2019-01-1035441823002ND
2019-01-1035441823001ND
2019-01-1035441823002ND
2019-04-0335459675001ND
2019-04-0335459675002ND
2019-04-0335459675001ND
2019-04-0335459675002ND
2019-07-1135481748002ND
2019-07-1135481748001ND
2019-07-1135481748001ND
2019-07-1135481748002ND
2019-10-17355062830017.80 ppb
2019-10-17355062830026.80 ppb
2019-10-17355062830026.80 ppb
2019-10-17355062830017.80 ppb
2020-01-07355234840023.90 ppb
2020-01-07355234840014.30 ppb
2020-04-2235545541001ND
2020-04-2235545541002ND
2020-04-29355470070010.800 ppb
2020-07-1735564173001ND
2020-07-1735564173002ND
2020-10-29355887380012.30 ppb
2020-10-29355887380021.80 ppb
2021-01-22356066990011.10 ppb
2021-01-22356066990021.50 ppb
2021-04-16356268660010.910 ppb
2021-04-16356268660021.60 ppb
2021-07-15356485790012.20 ppb
2021-07-15356485790021.80 ppb
2021-11-03356766760013.80 ppb
2021-11-03356766760022.90 ppb
2022-01-26356934680023.40 ppb
2022-01-26356934680011.30 ppb
2022-04-08357094520022.00 ppb
2022-04-08357094520011.50 ppb
2022-07-22357344140016.30 ppb
2022-07-22357344140024.00 ppb
2022-10-06357518290011.80 ppb
2022-10-06357518290021.50 ppb
2023-01-13357728280010.600 ppb
2023-01-13357728280020.560 ppb
2023-04-14357937150010.620 ppb
2023-04-1435793715002ND
2023-07-21358150500011.20 ppb
2023-07-2135815050002ND
2023-10-06358329490012.20 ppb
2023-10-06358329490021.80 ppb