Know Your Environment. Protect Your Health.

Bromoform

Elk City, City of

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
2018ND40ND
2019ND40ND
20200.575 ppb42ND - 1.20 ppb
2021ND40ND
20220.208 ppb41ND - 0.830 ppb
20230.883 ppb440.680 ppb - 1.10 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
2018-01-24907311ND
2018-04-09937808ND
2018-07-241011192ND
2018-10-091058155ND
2019-01-071101485ND
2019-04-081138386ND
2019-07-151203686ND
2019-10-071253251ND
2020-01-081304651ND
2020-04-061350468ND
2020-07-1314394731.20 ppb
2020-10-1315951191.10 ppb
2021-01-271755961ND
2021-04-211822154ND
2021-07-191887262ND
2021-10-121989285ND
2022-01-042107535ND
2022-04-192239647ND
2022-07-192308071ND
2022-10-2523844280.830 ppb
2023-01-2424369970.810 ppb
2023-04-2524885130.680 ppb
2023-07-2525433550.940 ppb
2023-10-3026013791.10 ppb