Know Your Environment. Protect Your Health.

Bromoform

King County Water District #125

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.

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND160ND
2019ND160ND
2020N/A00N/A
2021ND160ND
2022ND160ND
2023ND160ND

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
2018-03-14ND
2018-03-14ND
2018-03-14ND
2018-03-14ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-09-10ND
2018-09-10ND
2018-09-10ND
2018-09-10ND
2018-12-11ND
2018-12-11ND
2018-12-11ND
2018-12-11ND
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-06-11ND
2019-06-11ND
2019-06-11ND
2019-06-11ND
2019-09-10ND
2019-09-10ND
2019-09-10ND
2019-09-10ND
2019-12-09ND
2019-12-09ND
2019-12-09ND
2019-12-09ND
2021-03-094088999ND
2021-03-094088998ND
2021-03-094089000ND
2021-03-094089001ND
2021-06-154130806ND
2021-06-154130804ND
2021-06-154130805ND
2021-06-154130807ND
2021-09-144172489ND
2021-09-144172490ND
2021-09-144172491ND
2021-09-144172492ND
2021-12-144215990ND
2021-12-144215993ND
2021-12-144215991ND
2021-12-144215992ND
2022-03-084258213ND
2022-03-084258215ND
2022-03-084258212ND
2022-03-084258214ND
2022-06-144295072ND
2022-06-144295070ND
2022-06-144295073ND
2022-06-144295071ND
2022-09-154343601ND
2022-09-154343599ND
2022-09-154343600ND
2022-09-154343598ND
2022-12-154385588ND
2022-12-154385589ND
2022-12-154385590ND
2022-12-154385591ND
2023-03-164426557ND
2023-03-164426556ND
2023-03-164426558ND
2023-03-164426559ND
2023-06-154468689ND
2023-06-154468691ND
2023-06-154468690ND
2023-06-154468688ND
2023-09-144514551ND
2023-09-144514553ND
2023-09-144514552ND
2023-09-144514554ND
2023-12-124557043ND
2023-12-124557044ND
2023-12-124557046ND
2023-12-124557045ND