Know Your Environment. Protect Your Health.

Dibromochloromethane

Georgetown Water Department

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.

 

61

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.353 ppb72ND - 1.48 ppb
20190.405 ppb83ND - 1.75 ppb
20201.43 ppb75ND - 5.61 ppb
20212.14 ppb330.680 ppb - 4.82 ppb
20220.347 ppb146ND - 0.920 ppb
20230.350 ppb226ND - 2.36 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
2018-03-14S769306ND
2018-06-18S813747ND
2018-06-25S7925191.48 ppb
2018-07-02S8082920.990 ppb
2018-08-30S824396ND
2018-12-189948087-EVOCND
2018-12-28S816944ND
2019-01-28S860823ND
2019-02-08L7103316-EVOCND
2019-04-17S872273ND
2019-08-22S8485071.75 ppb
2019-08-22S8485090.970 ppb
2019-09-26S909231ND
2019-11-15S9253890.520 ppb
2019-11-15S925386ND
2020-02-18S932571ND
2020-05-04S9525650.920 ppb
2020-06-22S9695441.42 ppb
2020-06-22S9695465.61 ppb
2020-09-18S9697600.820 ppb
2020-10-05S977627ND
2020-10-05S9776211.23 ppb
2021-03-17S10484210.680 ppb
2021-08-10S10090670.920 ppb
2021-11-12S11484574.82 ppb
2022-02-16S11594470.810 ppb
2022-04-07S11855060.880 ppb
2022-04-07S1185434ND
2022-06-30S12093310.740 ppb
2022-06-30S12093290.740 ppb
2022-06-30S1209322ND
2022-06-30S12093240.770 ppb
2022-06-30S1209327ND
2022-09-16S12308150.920 ppb
2022-10-06S1230981ND
2022-10-06S1230979ND
2022-10-06S1230983ND
2022-10-10S1231009ND
2022-10-10S1231007ND
2023-03-24S1282875ND
2023-03-24S1282873ND
2023-03-24S1282871ND
2023-03-24S1282869ND
2023-03-24S12828670.620 ppb
2023-06-26S1287829ND
2023-06-26S1287827ND
2023-06-26S1287825ND
2023-06-30S12608400.780 ppb
2023-06-30S1260837ND
2023-09-13S12876832.36 ppb
2023-09-13S12876952.30 ppb
2023-09-28S1307835ND
2023-09-28S1307841ND
2023-09-28S1307839ND
2023-09-28S1307837ND
2023-09-28S13078330.600 ppb
2023-11-21S1307974ND
2023-11-21S1307971ND
2023-11-21S1307969ND
2023-11-21S1307968ND
2023-11-21S13079661.04 ppb