Know Your Environment. Protect Your Health.

Bromoform

Dunlap

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.426 ppb42ND - 0.952 ppb
20190.307 ppb42ND - 0.725 ppb
20200.551 ppb43ND - 0.787 ppb
20210.677 ppb440.515 ppb - 0.809 ppb
20220.761 ppb440.518 ppb - 1.03 ppb
20230.409 ppb42ND - 1.07 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
2018-02-018020096-02ND
2018-05-018050018-020.952 ppb
2018-08-158082953-02ND
2018-11-018110105-020.753 ppb
2019-02-059020301-02ND
2019-05-069050979-020.725 ppb
2019-08-059080455-02ND
2019-11-049110163-020.502 ppb
2020-02-040020221-02ND
2020-05-040050184-020.787 ppb
2020-08-030080021-020.702 ppb
2020-11-040110744-020.716 ppb
2021-02-01EB00048-020.515 ppb
2021-05-03EE00128-020.727 ppb
2021-08-02EH00012-020.809 ppb
2021-11-08EK01587-020.655 ppb
2022-02-01FB00029-020.569 ppb
2022-05-02FE00048-020.518 ppb
2022-08-08FH01583-021.03 ppb
2022-11-01FK00200-020.925 ppb
2023-02-01GB00061-02ND
2023-05-01GE00014-02ND
2023-08-01GH00014-020.564 ppb
2023-11-01GK00009-021.07 ppb