Know Your Environment. Protect Your Health.

Bromoform

City of Roanoke

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.306 ppb82ND - 1.31 ppb
20190.135 ppb81ND - 1.08 ppb
2020ND80ND
2021ND80ND
20220.129 ppb81ND - 1.03 ppb
2023ND80ND

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
2018-01-08Q18005610021.31 ppb
2018-01-08Q18005610011.14 ppb
2018-04-11Q1815186002ND
2018-04-11Q1815186001ND
2018-07-16Q1828196001ND
2018-07-16Q1828196003ND
2018-10-17Q1841746001ND
2018-10-17Q1841746002ND
2019-02-06Q1905613001ND
2019-02-06Q1905613002ND
2019-04-18Q1915717002ND
2019-04-18Q1915717003ND
2019-07-29Q1949769002ND
2019-07-29Q1949769001ND
2019-10-21Q19734670011.08 ppb
2019-10-21Q1973467002ND
2020-02-03Q2004502001ND
2020-02-03Q2004502002ND
2020-05-12Q2018405001ND
2020-05-12Q2018405002ND
2020-08-13Q2032283001ND
2020-08-13Q2032283002ND
2020-10-21Q2041078001ND
2020-10-21Q2041078002ND
2021-01-27Q2102037001ND
2021-01-27Q2102037002ND
2021-04-20Q2110128001ND
2021-04-20Q2110128002ND
2021-07-19Q2118849001ND
2021-07-19Q2118849002ND
2021-10-21Q2129767001ND
2021-10-21Q2129767002ND
2022-01-24Q2202293002ND
2022-01-24Q2202293003ND
2022-04-25Q22123320011.03 ppb
2022-04-25Q2212332002ND
2022-09-12Q2226979001ND
2022-09-12Q2226979002ND
2022-11-15Q2234276001ND
2022-11-15Q2234276002ND
2023-01-17Q2302177001ND
2023-01-17Q2302177002ND
2023-04-24Q2315261002ND
2023-04-24Q2315261003ND
2023-09-20Q2340861001ND
2023-09-20Q2340861002ND
2023-11-30Q2351087001ND
2023-11-30Q2351087002ND