Know Your Environment. Protect Your Health.

Bromoform

Tennessee Water Supply Corporation

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
201946.0 ppb337.54 ppb - 71.1 ppb
20204.17 ppb53ND - 15.9 ppb
202110.5 ppb552.90 ppb - 20.2 ppb
20225.28 ppb52ND - 14.4 ppb
202344.3 ppb556.07 ppb - 95.8 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
2018-09-25Q1838498001ND
2018-11-14Q1846426003ND
2019-08-20Q195703300171.1 ppb
2019-12-05Q197915400159.5 ppb
2019-12-09Q19792700017.54 ppb
2020-03-24Q20124170012.89 ppb
2020-03-24Q20124170062.07 ppb
2020-05-20Q202036100115.9 ppb
2020-08-06Q2031210001ND
2020-11-04Q2043075001ND
2021-01-26Q21018430042.90 ppb
2021-01-26Q21018430096.65 ppb
2021-04-13Q210939900118.2 ppb
2021-09-02Q21239570014.32 ppb
2021-12-02Q213332000120.2 ppb
2022-02-01Q2203642003ND
2022-02-01Q2203642006ND
2022-04-11Q2210995001ND
2022-09-06Q222634300112.0 ppb
2022-11-14Q223403100114.4 ppb
2023-03-01Q230825800282.0 ppb
2023-03-01Q230825800695.8 ppb
2023-05-22Q231904000112.8 ppb
2023-07-20Q23287660016.07 ppb
2023-10-02Q234209700124.8 ppb