Know Your Environment. Protect Your Health.

Bromodichloromethane

City of Vancouver

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

42

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.54 ppb10100.520 ppb - 3.00 ppb
20190.722 ppb187ND - 3.40 ppb
2020N/A00N/A
20211.01 ppb149ND - 2.50 ppb
20221.85 ppb108ND - 3.60 ppb
20232.01 ppb880.980 ppb - 3.00 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
2018-02-280.830 ppb
2018-02-281.95 ppb
2018-06-130.630 ppb
2018-06-130.800 ppb
2018-06-130.520 ppb
2018-06-132.79 ppb
2018-09-122.81 ppb
2018-09-120.820 ppb
2018-12-123.00 ppb
2018-12-121.29 ppb
2019-03-131.92 ppb
2019-03-130.990 ppb
2019-05-30ND
2019-05-30ND
2019-06-19ND
2019-06-191.80 ppb
2019-09-183.40 ppb
2019-09-181.20 ppb
2019-11-132.90 ppb
2019-11-130.790 ppb
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2021-03-2440943331.30 ppb
2021-03-2440943322.50 ppb
2021-03-304096453ND
2021-03-304096451ND
2021-03-304096452ND
2021-03-304096450ND
2021-05-184118752ND
2021-05-1841187621.90 ppb
2021-06-2841362710.510 ppb
2021-06-2841362702.10 ppb
2021-09-2341834880.880 ppb
2021-09-2341834872.20 ppb
2021-11-1742132110.960 ppb
2021-11-1742132101.80 ppb
2022-03-1642580321.30 ppb
2022-03-1642580313.30 ppb
2022-03-244266311ND
2022-03-244266312ND
2022-06-2343039071.50 ppb
2022-06-2343039063.40 ppb
2022-09-1443590661.10 ppb
2022-09-1443590632.50 ppb
2022-11-1643829151.80 ppb
2022-11-1643829133.60 ppb
2023-02-1544164042.50 ppb
2023-02-1544164051.20 ppb
2023-05-2444659202.90 ppb
2023-05-2444659210.980 ppb
2023-08-1645055742.70 ppb
2023-08-1645055751.20 ppb
2023-11-1545501813.00 ppb
2023-11-1545501841.60 ppb