Know Your Environment. Protect Your Health.

Bromodichloromethane

City of Anacortes

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.

 

83

Samples

0

Samples exceeding legal limit (MCL)

78

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.665 ppb1714ND - 1.30 ppb
20190.844 ppb1816ND - 1.40 ppb
2020N/A00N/A
20210.775 ppb16160.600 ppb - 1.10 ppb
20220.763 ppb16160.600 ppb - 1.10 ppb
20230.869 ppb16160.700 ppb - 1.20 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
2018-02-270.700 ppb
2018-02-271.20 ppb
2018-02-271.000 ppb
2018-02-270.700 ppb
2018-05-210.500 ppb
2018-05-210.500 ppb
2018-05-21ND
2018-05-21ND
2018-07-16ND
2018-08-201.10 ppb
2018-08-201.000 ppb
2018-08-200.900 ppb
2018-08-201.30 ppb
2018-11-090.500 ppb
2018-11-090.500 ppb
2018-11-090.800 ppb
2018-11-090.600 ppb
2019-02-140.900 ppb
2019-02-140.800 ppb
2019-02-141.10 ppb
2019-02-140.900 ppb
2019-05-200.800 ppb
2019-05-200.600 ppb
2019-05-200.900 ppb
2019-05-200.600 ppb
2019-07-24ND
2019-07-24ND
2019-08-261.40 ppb
2019-08-261.20 ppb
2019-08-261.10 ppb
2019-08-261.000 ppb
2019-11-120.900 ppb
2019-11-120.900 ppb
2019-11-120.900 ppb
2019-11-121.20 ppb
2021-02-2340811310.800 ppb
2021-02-2340811330.800 ppb
2021-02-2340811350.700 ppb
2021-02-2340811370.900 ppb
2021-05-0341128970.600 ppb
2021-05-0341128910.600 ppb
2021-05-0341128930.900 ppb
2021-05-0341128950.600 ppb
2021-09-2041861250.700 ppb
2021-09-2041861231.000 ppb
2021-09-2041861210.700 ppb
2021-09-2041861270.700 ppb
2021-11-0842064490.700 ppb
2021-11-0842064511.10 ppb
2021-11-0842064550.800 ppb
2021-11-0842064530.800 ppb
2022-02-1742473710.900 ppb
2022-02-1742473640.700 ppb
2022-02-1742473790.900 ppb
2022-02-1742473760.800 ppb
2022-04-2742842700.800 ppb
2022-04-2742842721.10 ppb
2022-04-2742842740.900 ppb
2022-04-2742842760.900 ppb
2022-07-2643221170.600 ppb
2022-07-2643221110.600 ppb
2022-07-2643221150.800 ppb
2022-07-2643221130.600 ppb
2022-11-0143720120.600 ppb
2022-11-0143720160.600 ppb
2022-11-0143720070.800 ppb
2022-11-0143720020.600 ppb
2023-02-0144151251.10 ppb
2023-02-0144151270.800 ppb
2023-02-0144151230.800 ppb
2023-02-0144151211.000 ppb
2023-05-1244575740.700 ppb
2023-05-1244575860.700 ppb
2023-05-1244575780.700 ppb
2023-05-1244575820.800 ppb
2023-07-3144913281.000 ppb
2023-07-3144913350.900 ppb
2023-07-3144913321.20 ppb
2023-07-3144913301.000 ppb
2023-11-2045563461.000 ppb
2023-11-2045563420.800 ppb
2023-11-2045563620.700 ppb
2023-11-2045563380.700 ppb