Know Your Environment. Protect Your Health.

Bromodichloromethane

Tell City Water Department

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

18

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND20ND
20200.868 ppb43ND - 1.70 ppb
20210.630 ppb54ND - 1.10 ppb
20220.634 ppb54ND - 1.50 ppb
20231.16 ppb220.710 ppb - 1.60 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2019-06-0419008196002RV-1902ND
2019-06-0419008196001RV-1902ND
2020-03-1120003740001RV-20010.900 ppb
2020-05-0520006472001RV-20021.70 ppb
2020-08-0520011751-001ND
2020-11-1620018757-001-00160.870 ppb
2021-02-0921002715-001-0001ND
2021-05-0421008363-001-00050.610 ppb
2021-05-1021008766-001-00090.790 ppb
2021-08-1621016155-001-00021.10 ppb
2021-11-0921022468-001-00070.650 ppb
2022-02-0722002390-001-00070.600 ppb
2022-05-0422007983-001-00051.50 ppb
2022-06-1322010634-001-0003ND
2022-08-0922014974-001-00070.530 ppb
2022-11-2122022161-001-00010.540 ppb
2023-02-0723002399-001-00031.60 ppb
2023-08-0823014658-001-00090.710 ppb