Know Your Environment. Protect Your Health.

Bromodichloromethane

Waterproof Water System

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.43 ppb1612ND - 2.60 ppb
20191.63 ppb1612ND - 4.40 ppb
20201.63 ppb84ND - 5.70 ppb
20212.67 ppb880.970 ppb - 5.30 ppb
20222.01 ppb880.950 ppb - 3.70 ppb
20231.95 ppb880.910 ppb - 3.90 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
2018-03-01353778590011.20 ppb
2018-03-01353778590021.10 ppb
2018-03-01353778590021.10 ppb
2018-03-01353778590011.20 ppb
2018-06-19353998650022.60 ppb
2018-06-19353998650012.60 ppb
2018-06-19353998650022.60 ppb
2018-06-19353998650012.60 ppb
2018-09-1035417621001ND
2018-09-1035417621002ND
2018-09-1035417621001ND
2018-09-1035417621002ND
2018-12-10354373220012.20 ppb
2018-12-10354373220012.20 ppb
2018-12-10354373220021.70 ppb
2018-12-10354373220021.70 ppb
2019-03-1135454262001ND
2019-03-1135454262002ND
2019-03-1135454262001ND
2019-03-1135454262002ND
2019-06-12354755390011.40 ppb
2019-06-12354755390021.50 ppb
2019-06-12354755390011.40 ppb
2019-06-12354755390021.50 ppb
2019-09-17354995330020.900 ppb
2019-09-17354995330010.600 ppb
2019-09-17354995330010.600 ppb
2019-09-17354995330020.900 ppb
2019-12-13355189340014.20 ppb
2019-12-13355189340024.40 ppb
2019-12-13355189340024.40 ppb
2019-12-13355189340014.20 ppb
2020-03-0235535626002ND
2020-03-0235535626001ND
2020-06-2435559211001ND
2020-06-2435559211002ND
2020-09-24355805840010.860 ppb
2020-09-24355805840021.10 ppb
2020-12-11355988940015.70 ppb
2020-12-11355988940025.40 ppb
2021-03-12356203430011.000 ppb
2021-03-12356203430021.10 ppb
2021-06-25356438160015.30 ppb
2021-06-25356438160024.20 ppb
2021-09-17356657940011.20 ppb
2021-09-17356657940020.970 ppb
2021-12-13356857120013.60 ppb
2021-12-13356857120024.00 ppb
2022-03-29357068420022.90 ppb
2022-03-29357068420012.20 ppb
2022-06-22357278400020.950 ppb
2022-06-22357278400010.990 ppb
2022-09-12357479340011.10 ppb
2022-09-12357479340021.20 ppb
2022-12-05357666670013.00 ppb
2022-12-05357666670023.70 ppb
2023-03-20357881230011.70 ppb
2023-03-20357881230021.80 ppb
2023-06-12358063690011.10 ppb
2023-06-12358063690021.30 ppb
2023-09-22358303100010.950 ppb
2023-09-22358303100020.910 ppb
2023-12-14358498340013.90 ppb
2023-12-14358498340023.90 ppb