Know Your Environment. Protect Your Health.

Bromodichloromethane

Haciendas Del Norte Water Improvement Di

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

22

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201815.4 ppb86ND - 33.9 ppb
20199.33 ppb84ND - 21.5 ppb
202013.2 ppb84ND - 29.0 ppb
20219.26 ppb82ND - 39.2 ppb
202211.3 ppb82ND - 45.8 ppb
20238.11 ppb84ND - 31.3 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
2018-01-10Q1801266003ND
2018-01-10Q1801266002ND
2018-04-03Q181399100220.2 ppb
2018-04-03Q181399100121.8 ppb
2018-07-12Q182776800132.4 ppb
2018-07-12Q182776800233.9 ppb
2018-10-31Q18438050011.16 ppb
2018-10-31Q184380500213.5 ppb
2019-01-22Q1903665001ND
2019-01-22Q1903665003ND
2019-05-14Q1925475001ND
2019-05-14Q1925475002ND
2019-08-23Q195976300217.4 ppb
2019-08-23Q195976300115.8 ppb
2019-10-28Q197457800119.9 ppb
2019-10-28Q197457800221.5 ppb
2020-01-30Q2003941001ND
2020-01-30Q2003941002ND
2020-04-15Q201496600123.7 ppb
2020-04-15Q201496600226.3 ppb
2020-07-16Q202800700129.0 ppb
2020-07-16Q202800700226.8 ppb
2020-11-17Q2045543001ND
2020-11-17Q2045543002ND
2021-01-06Q2100407002ND
2021-01-06Q2100407003ND
2021-04-15Q2109772001ND
2021-04-15Q2109772002ND
2021-07-21Q211912000134.9 ppb
2021-07-21Q211912000239.2 ppb
2021-11-04Q2130989001ND
2021-11-04Q2130989002ND
2022-01-13Q2201439002ND
2022-01-13Q2201439003ND
2022-04-20Q2212103001ND
2022-04-20Q2212103002ND
2022-07-29Q222232300144.7 ppb
2022-07-29Q222232300245.8 ppb
2022-11-02Q2233266001ND
2022-11-02Q2233266002ND
2023-02-13Q2305506002ND
2023-02-13Q2305506003ND
2023-05-18Q2318783001ND
2023-05-18Q2318783002ND
2023-08-08Q233226300131.3 ppb
2023-08-08Q233226300230.5 ppb
2023-11-13Q23484180011.55 ppb
2023-11-13Q23484180021.50 ppb