Know Your Environment. Protect Your Health.

Bromoform

Northern Hills Water Service

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)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.32 ppb42ND - 4.29 ppb
20190.365 ppb41ND - 1.46 ppb
20200.665 ppb41ND - 2.66 ppb
20211.01 ppb41ND - 4.05 ppb
20223.19 ppb43ND - 5.68 ppb
20232.68 ppb43ND - 4.10 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
2018-03-13Q1810523001ND
2018-05-15Q1819955002ND
2018-08-30Q18350620014.29 ppb
2018-12-04Q18497310011.000 ppb
2019-03-04Q1909368002ND
2019-05-14Q1925020001ND
2019-08-27Q1960471001ND
2019-11-04Q19750540011.46 ppb
2020-01-29Q2003555001ND
2020-04-15Q2014957001ND
2020-07-23Q2028993001ND
2020-12-16Q20498580012.66 ppb
2021-03-24Q21075910014.05 ppb
2021-06-08Q2115160001ND
2021-09-15Q2125457001ND
2021-11-17Q2132244001ND
2022-02-16Q22057330022.39 ppb
2022-05-17Q2214540001ND
2022-09-01Q22260310014.67 ppb
2022-11-28Q22352030015.68 ppb
2023-01-25Q23035620013.84 ppb
2023-06-26Q2324321002ND
2023-09-06Q23384430012.76 ppb
2023-12-14Q23536270014.10 ppb