Know Your Environment. Protect Your Health.

Bromoform

Valley Falls, 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)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.16 ppb440.620 ppb - 1.40 ppb
20190.270 ppb42ND - 0.580 ppb
2020ND40ND
2021ND40ND
20220.618 ppb42ND - 1.90 ppb
20230.273 ppb42ND - 0.560 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
2018-02-199079251.30 ppb
2018-05-219733321.30 ppb
2018-08-2110290951.40 ppb
2018-11-1910792910.620 ppb
2019-02-181122466ND
2019-05-201157728ND
2019-08-1912256720.500 ppb
2019-11-1912775080.580 ppb
2020-02-241329962ND
2020-05-191383212ND
2020-08-181497887ND
2020-11-181665025ND
2021-03-011777663ND
2021-05-241844646ND
2021-08-231925891ND
2021-11-222032700ND
2022-02-2221986020.570 ppb
2022-06-092275010ND
2022-08-2223386481.90 ppb
2022-11-212401233ND
2023-02-202452325ND
2023-05-2225039640.560 ppb
2023-08-212560618ND
2023-11-2126136870.530 ppb