Know Your Environment. Protect Your Health.

Bromoform

City of Vancouver

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.578 ppb107ND - 1.31 ppb
20190.339 ppb187ND - 1.40 ppb
2020N/A00N/A
20210.416 ppb146ND - 1.10 ppb
20220.972 ppb108ND - 1.70 ppb
20230.954 ppb880.510 ppb - 1.70 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is 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, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-280.510 ppb
2018-02-281.31 ppb
2018-06-130.500 ppb
2018-06-13ND
2018-06-13ND
2018-06-130.910 ppb
2018-09-120.700 ppb
2018-09-12ND
2018-12-121.09 ppb
2018-12-120.760 ppb
2019-03-130.860 ppb
2019-03-130.570 ppb
2019-05-30ND
2019-05-30ND
2019-06-19ND
2019-06-190.620 ppb
2019-09-181.40 ppb
2019-09-180.700 ppb
2019-11-131.40 ppb
2019-11-13ND
2019-12-100.550 ppb
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2021-03-2440943321.000 ppb
2021-03-2440943330.630 ppb
2021-03-304096450ND
2021-03-304096453ND
2021-03-304096452ND
2021-03-304096451ND
2021-05-184118762ND
2021-05-184118752ND
2021-06-284136271ND
2021-06-2841362701.10 ppb
2021-09-234183488ND
2021-09-2341834871.10 ppb
2021-11-1742132110.890 ppb
2021-11-1742132101.10 ppb
2022-03-1642580311.70 ppb
2022-03-1642580321.40 ppb
2022-03-244266311ND
2022-03-244266312ND
2022-06-2343039061.50 ppb
2022-06-2343039070.530 ppb
2022-09-1443590631.40 ppb
2022-09-1443590660.670 ppb
2022-11-1643829131.60 ppb
2022-11-1643829150.920 ppb
2023-02-1544164050.690 ppb
2023-02-1544164041.20 ppb
2023-05-2444659201.30 ppb
2023-05-2444659210.510 ppb
2023-08-1645055750.620 ppb
2023-08-1645055740.970 ppb
2023-11-1545501811.70 ppb
2023-11-1545501840.640 ppb