Know Your Environment. Protect Your Health.

Bromoform

Harris County Municipal Utility District 420

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)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.525 ppb42ND - 1.10 ppb
20201.80 ppb42ND - 6.20 ppb
20211.48 ppb441.000 ppb - 1.80 ppb
20222.03 ppb441.30 ppb - 3.30 ppb
2023ND40ND

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
2018-01-11AE08924ND
2018-04-03AE21009ND
2018-07-09AE32616ND
2018-10-10AE43108ND
2019-02-13AE543391.10 ppb
2019-04-04AE61203ND
2019-07-08AE73430ND
2019-12-13AE924301.000 ppb
2020-03-02AF006291.000 ppb
2020-06-09AF14643ND
2020-07-23AF20441ND
2020-11-20AF354856.20 ppb
2021-02-08AF429591.80 ppb
2021-04-13AF499551.70 ppb
2021-08-25AF679201.000 ppb
2021-10-25AF745261.40 ppb
2022-02-14AF845911.30 ppb
2022-05-18AF977353.30 ppb
2022-09-19AG135561.40 ppb
2022-12-12AG214962.10 ppb
2023-02-15AG29065ND
2023-04-19AG37342ND
2023-08-01AG50809ND
2023-10-30AG61477ND