Know Your Environment. Protect Your Health.

Bromoform

Franklin County Rural Water District 4

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)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.193 ppb41ND - 0.770 ppb
20190.133 ppb41ND - 0.530 ppb
20200.595 ppb42ND - 1.40 ppb
20210.125 ppb41ND - 0.500 ppb
20220.348 ppb42ND - 0.870 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
2018-02-19908012ND
2018-05-23974346ND
2018-08-1410247530.770 ppb
2018-11-271081162ND
2019-03-131135280ND
2019-05-211157768ND
2019-09-111239164ND
2019-12-1112857730.530 ppb
2020-02-251329965ND
2020-05-201383526ND
2020-10-2115193231.40 ppb
2020-11-1716612290.980 ppb
2021-02-0917680990.500 ppb
2021-05-111836512ND
2021-08-091909390ND
2021-11-082017684ND
2022-02-142192425ND
2022-05-092253942ND
2022-09-2823670540.870 ppb
2022-11-2124011340.520 ppb
2023-02-132448743ND
2023-05-152499955ND
2023-08-092552088ND
2023-11-152610840ND