Know Your Environment. Protect Your Health.

Bromoform

Lewis County Public Water Supply District 1

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
20230.0888 ppb81ND - 0.710 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
2018-03-16AD17681ND
2018-03-16AD17682ND
2018-05-16AD20465ND
2018-05-16AD20466ND
2018-08-13AD31140ND
2018-08-13AD31141ND
2018-11-12AD35675ND
2018-11-12AD35676ND
2019-02-13AD39343ND
2019-02-13AD39344ND
2019-05-15AD47425ND
2019-05-15AD47424ND
2019-08-19AD53865ND
2019-08-19AD53866ND
2019-11-18AD58050ND
2019-11-18AD58051ND
2020-02-102001996ND
2020-02-102001997ND
2020-05-212008861ND
2020-05-212008860ND
2020-08-172014250ND
2020-08-172014249ND
2020-11-222017990ND
2020-11-222017991ND
2021-02-092100635ND
2021-02-092100634ND
2021-05-142110906ND
2021-05-142110905ND
2021-08-162115250ND
2021-08-162115251ND
2021-11-122119478ND
2021-11-122119479ND
2022-02-112201929ND
2022-02-112201928ND
2022-05-132211523ND
2022-05-132211522ND
2022-08-102216211ND
2022-08-102216210ND
2022-11-152221131ND
2022-11-152221130ND
2023-02-152300550ND
2023-02-2723015240.710 ppb
2023-05-112308097ND
2023-05-112308096ND
2023-08-082313275ND
2023-08-082313276ND
2023-11-102318237ND
2023-11-102318238ND