Know Your Environment. Protect Your Health.

Dibromochloromethane

Madison PWS

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.53 ppb87ND - 4.20 ppb
20190.784 ppb87ND - 1.44 ppb
20201.38 ppb880.780 ppb - 1.99 ppb
20210.926 ppb880.770 ppb - 1.09 ppb
20221.07 ppb880.820 ppb - 1.51 ppb
20232.00 ppb881.000 ppb - 2.91 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
2018-03-19AD176460.790 ppb
2018-03-19AD176470.720 ppb
2018-05-08AD204411.27 ppb
2018-05-08AD204421.58 ppb
2018-08-09AD311143.15 ppb
2018-08-09AD311154.20 ppb
2018-11-13AD35652ND
2018-11-13AD356510.540 ppb
2019-02-12AD393190.640 ppb
2019-02-12AD39320ND
2019-05-14AD474000.710 ppb
2019-05-14AD474010.660 ppb
2019-08-19AD538391.44 ppb
2019-08-19AD538401.30 ppb
2019-11-18AD580260.710 ppb
2019-11-18AD580270.810 ppb
2020-02-1820019710.800 ppb
2020-02-1820019700.780 ppb
2020-06-0220088031.33 ppb
2020-06-0220088041.31 ppb
2020-08-1820142341.66 ppb
2020-08-1820142351.99 ppb
2020-12-0720179231.60 ppb
2020-12-0720179241.60 ppb
2021-03-0121005750.880 ppb
2021-03-0121005741.05 ppb
2021-05-1721108460.810 ppb
2021-05-1721108450.830 ppb
2021-08-1121151880.770 ppb
2021-08-1121151890.940 ppb
2021-11-2921194091.04 ppb
2021-11-2921194101.09 ppb
2022-02-1522018690.910 ppb
2022-02-1522018680.990 ppb
2022-05-2322114660.900 ppb
2022-05-2322114650.820 ppb
2022-08-0922161491.16 ppb
2022-08-0922161501.51 ppb
2022-12-0522210711.15 ppb
2022-12-0522210701.09 ppb
2023-02-2123004931.000 ppb
2023-02-2123004921.06 ppb
2023-05-2223080402.29 ppb
2023-05-2223080391.75 ppb
2023-08-2123132102.71 ppb
2023-09-0523160122.91 ppb
2023-12-0423181742.13 ppb
2023-12-0423181752.13 ppb