Know Your Environment. Protect Your Health.

Bromoform

Denton County Fresh Water Supply District 11-b

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)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.250 ppb41ND - 1.000 ppb
2019ND40ND
20200.855 ppb42ND - 2.12 ppb
2021ND40ND
20220.358 ppb41ND - 1.43 ppb
20231.39 ppb43ND - 2.30 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
2018-01-03Q1800336001ND
2018-04-05Q18141810021.000 ppb
2018-07-05Q1826565001ND
2018-10-03Q1839720001ND
2019-01-08Q1900595001ND
2019-04-09Q1914508001ND
2019-08-05Q1950728001ND
2019-10-02Q1971115002ND
2020-01-15Q20015900022.12 ppb
2020-05-18Q20196710011.30 ppb
2020-09-10Q2036111001ND
2020-11-24Q2047158001ND
2021-02-24Q2104754002ND
2021-05-26Q2113814001ND
2021-08-24Q2123032001ND
2021-11-10Q2131597001ND
2022-02-15Q2205434001ND
2022-05-09Q22137890011.43 ppb
2022-08-18Q2224621001ND
2022-10-18Q2231731001ND
2023-01-27Q23044020011.55 ppb
2023-06-12Q2322120001ND
2023-08-29Q23373240011.71 ppb
2023-11-08Q23480530012.30 ppb