Know Your Environment. Protect Your Health.

Bromoform

St. Martin Parish Water Works District 4 Catahoula

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
20200.400 ppb220.360 ppb - 0.440 ppb
2021ND20ND
20220.900 ppb21ND - 1.80 ppb
20230.335 ppb21ND - 0.670 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
2018-09-1435418005001ND
2018-09-1435418005002ND
2018-09-1435418005001ND
2018-09-1435418005002ND
2019-09-1235497767001ND
2019-09-1235497767002ND
2019-09-1235497767001ND
2019-09-1235497767002ND
2020-09-10355773480010.440 ppb
2020-09-10355773480020.360 ppb
2021-09-2735667385001ND
2021-09-2735667385002ND
2022-09-2635749730001ND
2022-09-26357497300021.80 ppb
2023-09-19358297150010.670 ppb
2023-09-1935829715002ND