Know Your Environment. Protect Your Health.

Bromodichloromethane

Starr Water Supply Corporation

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
20190.430 ppb52ND - 1.10 ppb
20204.06 ppb51ND - 20.3 ppb
20210.483 ppb62ND - 1.66 ppb
20220.274 ppb51ND - 1.37 ppb
20230.508 ppb52ND - 1.41 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
2018-09-18Q1837193002ND
2018-10-04Q1839859002ND
2018-10-04Q1839859004ND
2018-10-04Q1839859005ND
2018-10-04Q1839859007ND
2019-08-27Q1960470001ND
2019-08-27Q1960470003ND
2019-08-27Q1960470005ND
2019-08-27Q19604700141.10 ppb
2019-12-11Q19797720011.05 ppb
2020-09-29Q2038300010ND
2020-09-29Q2038300011ND
2020-09-29Q2038300014ND
2020-09-29Q2038300016ND
2020-12-15Q204965500520.3 ppb
2021-05-19Q21131430031.66 ppb
2021-05-19Q2113143005ND
2021-09-09Q21245970011.24 ppb
2021-11-17Q2132246001ND
2021-11-17Q2132246006ND
2021-11-17Q2132246008ND
2022-05-17Q2214542002ND
2022-10-19Q2231830002ND
2022-10-19Q2231830004ND
2022-10-19Q2231830006ND
2022-10-19Q22318300081.37 ppb
2023-06-26Q2324322005ND
2023-06-26Q2324322007ND
2023-06-26Q2324322009ND
2023-06-26Q23243220111.41 ppb
2023-06-26Q23243220341.13 ppb