Know Your Environment. Protect Your Health.

Bromoform

Ward II Water 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.460 ppb440.450 ppb - 0.470 ppb
2019ND40ND
20200.210 ppb21ND - 0.420 ppb
20210.425 ppb21ND - 0.850 ppb
2022ND20ND
20230.285 ppb21ND - 0.570 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
2018-05-02353899190010.450 ppb
2018-05-02353899190020.470 ppb
2018-05-02353899190010.450 ppb
2018-05-02353899190020.470 ppb
2019-05-0335466100001ND
2019-05-0335466100002ND
2019-05-0335466100001ND
2019-05-0335466100002ND
2020-05-0135547150001ND
2020-05-01355471500020.420 ppb
2021-05-1435633872001ND
2021-05-14356338720020.850 ppb
2022-05-0635715935001ND
2022-05-0635715935002ND
2023-05-0535797782001ND
2023-05-05357977820020.570 ppb