Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Vancouver

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

47

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.44 ppb10100.690 ppb - 2.85 ppb
20190.840 ppb1812ND - 3.10 ppb
2020N/A00N/A
20211.02 ppb149ND - 2.40 ppb
20221.93 ppb108ND - 3.70 ppb
20231.98 ppb881.20 ppb - 3.00 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
2018-02-280.730 ppb
2018-02-281.72 ppb
2018-06-131.12 ppb
2018-06-130.930 ppb
2018-06-130.690 ppb
2018-06-132.85 ppb
2018-09-121.69 ppb
2018-09-120.780 ppb
2018-12-122.46 ppb
2018-12-121.42 ppb
2019-03-131.76 ppb
2019-03-130.920 ppb
2019-05-300.590 ppb
2019-05-30ND
2019-06-190.570 ppb
2019-06-191.60 ppb
2019-09-183.10 ppb
2019-09-181.40 ppb
2019-11-132.90 ppb
2019-11-130.760 ppb
2019-12-100.500 ppb
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-100.500 ppb
2019-12-10ND
2019-12-10ND
2019-12-100.520 ppb
2021-03-2440943331.30 ppb
2021-03-2440943322.40 ppb
2021-03-304096450ND
2021-03-304096453ND
2021-03-304096452ND
2021-03-304096451ND
2021-05-1841187621.60 ppb
2021-05-184118752ND
2021-06-2841362710.640 ppb
2021-06-2841362702.10 ppb
2021-09-2341834872.10 ppb
2021-09-2341834880.840 ppb
2021-11-1742132102.00 ppb
2021-11-1742132111.30 ppb
2022-03-1642580313.40 ppb
2022-03-1642580321.90 ppb
2022-03-244266311ND
2022-03-244266312ND
2022-06-2343039071.20 ppb
2022-06-2343039063.20 ppb
2022-09-1443590661.20 ppb
2022-09-1443590632.60 ppb
2022-11-1643829133.70 ppb
2022-11-1643829152.10 ppb
2023-02-1544164051.30 ppb
2023-02-1544164042.30 ppb
2023-05-2444659203.00 ppb
2023-05-2444659211.20 ppb
2023-08-1645055751.30 ppb
2023-08-1645055742.40 ppb
2023-11-1545501841.40 ppb
2023-11-1545501812.90 ppb