Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Redmond 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.

 

166

Samples

0

Samples exceeding legal limit (MCL)

41

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.841 ppb328ND - 4.23 ppb
20190.722 ppb368ND - 4.42 ppb
2020N/A00N/A
20210.649 ppb338ND - 3.68 ppb
20220.310 ppb336ND - 3.19 ppb
20230.615 ppb3211ND - 3.91 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
2018-01-10ND
2018-01-10ND
2018-01-103.56 ppb
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-102.70 ppb
2018-04-04ND
2018-04-04ND
2018-04-043.25 ppb
2018-04-04ND
2018-04-04ND
2018-04-04ND
2018-04-04ND
2018-04-042.38 ppb
2018-07-03ND
2018-07-03ND
2018-07-034.23 ppb
2018-07-03ND
2018-07-03ND
2018-07-03ND
2018-07-03ND
2018-07-032.70 ppb
2018-10-03ND
2018-10-03ND
2018-10-034.13 ppb
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-033.96 ppb
2019-01-09ND
2019-01-09ND
2019-01-093.49 ppb
2019-01-09ND
2019-01-09ND
2019-01-09ND
2019-01-09ND
2019-01-092.50 ppb
2019-04-03ND
2019-04-03ND
2019-04-032.97 ppb
2019-04-03ND
2019-04-03ND
2019-04-03ND
2019-04-03ND
2019-04-032.32 ppb
2019-07-01ND
2019-07-01ND
2019-07-013.63 ppb
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-012.57 ppb
2019-07-09ND
2019-07-09ND
2019-07-09ND
2019-07-09ND
2019-10-02ND
2019-10-02ND
2019-10-024.10 ppb
2019-10-02ND
2019-10-02ND
2019-10-02ND
2019-10-02ND
2019-10-024.42 ppb
2021-01-064064306ND
2021-01-064064300ND
2021-01-064064303ND
2021-01-064064302ND
2021-01-0640643013.02 ppb
2021-01-064064304ND
2021-01-0640643052.16 ppb
2021-01-064064299ND
2021-04-074101624ND
2021-04-074101626ND
2021-04-074101628ND
2021-04-074101623ND
2021-04-0741016253.44 ppb
2021-04-074101627ND
2021-04-0741016292.09 ppb
2021-04-074101630ND
2021-07-0741723852.30 ppb
2021-07-074172386ND
2021-07-074172379ND
2021-07-074172384ND
2021-07-074172382ND
2021-07-074172380ND
2021-07-0741723812.84 ppb
2021-07-074172383ND
2021-09-024178935ND
2021-10-0641957093.68 ppb
2021-10-064195712ND
2021-10-064195714ND
2021-10-064195707ND
2021-10-064195711ND
2021-10-0641957131.88 ppb
2021-10-064195708ND
2021-10-064195710ND
2022-01-124230076ND
2022-01-124230078ND
2022-01-124230074ND
2022-01-124230073ND
2022-01-1242300752.18 ppb
2022-01-124230080ND
2022-01-124230077ND
2022-01-1242300792.08 ppb
2022-04-064270527ND
2022-04-064270528ND
2022-04-064270530ND
2022-04-064270532ND
2022-04-064270526ND
2022-04-064270529ND
2022-04-064270533ND
2022-04-064270531ND
2022-07-064310271ND
2022-07-0643102731.47 ppb
2022-07-064310268ND
2022-07-064310267ND
2022-07-064310270ND
2022-07-0643102693.19 ppb
2022-07-064310272ND
2022-07-064310274ND
2022-07-274325450ND
2022-10-054361953ND
2022-10-054361958ND
2022-10-054361954ND
2022-10-054361956ND
2022-10-0543619550.702 ppb
2022-10-054361957ND
2022-10-054361960ND
2022-10-0543619590.621 ppb
2023-01-0343977021.51 ppb
2023-01-0343977061.37 ppb
2023-01-034397704ND
2023-01-034397700ND
2023-01-034397707ND
2023-01-034397701ND
2023-01-034397705ND
2023-01-034397703ND
2023-04-0744420662.16 ppb
2023-04-074442065ND
2023-04-0744420622.83 ppb
2023-04-074442061ND
2023-04-074442060ND
2023-04-074442067ND
2023-04-074442063ND
2023-04-074442064ND
2023-07-074482800ND
2023-07-074482798ND
2023-07-074482804ND
2023-07-074482802ND
2023-07-074482801ND
2023-07-0744827993.14 ppb
2023-07-074482797ND
2023-07-0744828030.929 ppb
2023-10-0245293703.91 ppb
2023-10-0245293690.559 ppb
2023-10-0245293742.16 ppb
2023-10-024529372ND
2023-10-0245293730.504 ppb
2023-10-0245293710.596 ppb
2023-10-024529375ND
2023-10-024529368ND