Know Your Environment. Protect Your Health.

Bromoform

Dean Dale Special Utility District

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.

 

54

Samples

0

Samples exceeding legal limit (MCL)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20186.33 ppb991.15 ppb - 11.7 ppb
20195.40 ppb992.43 ppb - 11.6 ppb
20201.20 ppb94ND - 3.73 ppb
20210.626 ppb92ND - 2.88 ppb
20223.11 ppb97ND - 5.81 ppb
20233.42 ppb97ND - 14.5 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
2018-02-28Q18084450031.15 ppb
2018-02-28Q18084450012.44 ppb
2018-02-28Q18084450064.89 ppb
2018-05-09Q18191940024.66 ppb
2018-05-09Q18191940046.48 ppb
2018-08-23Q18340010037.41 ppb
2018-08-23Q18340010046.71 ppb
2018-11-13Q184572100111.7 ppb
2018-11-13Q184572100311.5 ppb
2019-01-29Q19044400034.61 ppb
2019-01-29Q19044400054.38 ppb
2019-01-29Q19044400085.64 ppb
2019-05-16Q19265630033.45 ppb
2019-05-16Q19265630044.22 ppb
2019-08-20Q19573810042.43 ppb
2019-08-20Q19573810032.92 ppb
2019-11-21Q19777880039.37 ppb
2019-11-21Q197778800411.6 ppb
2020-03-03Q20079780083.73 ppb
2020-03-03Q20079780092.64 ppb
2020-03-03Q20079780112.18 ppb
2020-06-09Q2023220002ND
2020-06-09Q2023220003ND
2020-09-22Q20375640032.21 ppb
2020-09-30Q2038469001ND
2020-11-30Q2047189001ND
2020-11-30Q2047189002ND
2021-03-10Q21063770032.75 ppb
2021-03-10Q21063770042.88 ppb
2021-06-15Q2115601001ND
2021-06-15Q2115601005ND
2021-06-15Q2115601006ND
2021-09-15Q2125322003ND
2021-09-15Q2125322004ND
2021-11-02Q2130740003ND
2021-11-02Q2130740004ND
2022-01-20Q22020940035.81 ppb
2022-01-20Q22020940073.71 ppb
2022-01-20Q22020940084.37 ppb
2022-04-12Q22112060012.04 ppb
2022-04-12Q22112060042.08 ppb
2022-07-12Q2219478002ND
2022-07-12Q2219478003ND
2022-10-05Q22301070015.75 ppb
2022-10-05Q22301070044.20 ppb
2023-02-13Q23055000059.18 ppb
2023-02-13Q230550000614.5 ppb
2023-02-13Q2305500008ND
2023-05-10Q23179640031.47 ppb
2023-05-10Q23179640041.07 ppb
2023-08-29Q23373520021.000 ppb
2023-08-29Q2337352003ND
2023-10-31Q23465890032.09 ppb
2023-10-31Q23465890041.49 ppb