Know Your Environment. Protect Your Health.

Bromoform

Fort Johnson South Water System

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.230 ppb42ND - 0.460 ppb
2020ND20ND
20210.113 ppb61ND - 0.680 ppb
20220.575 ppb1614ND - 0.910 ppb
20230.607 ppb1614ND - 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
2018-07-2535407305001ND
2018-07-2535407305002ND
2018-07-2535407305002ND
2018-07-2535407305001ND
2019-07-2535485195002ND
2019-07-25354851950010.460 ppb
2019-07-25354851950010.460 ppb
2019-07-2535485195002ND
2020-07-2235565518001ND
2020-07-2235565518002ND
2021-07-0835646122002ND
2021-07-0835646122001ND
2021-10-2535673978003ND
2021-10-2535673978004ND
2021-10-2535673978002ND
2021-10-25356739780010.680 ppb
2022-01-19356919350040.910 ppb
2022-01-1935691935003ND
2022-01-1935691935002ND
2022-01-19356919350010.610 ppb
2022-04-20357127280040.530 ppb
2022-04-20357127280030.580 ppb
2022-04-20357127280020.860 ppb
2022-04-20357127280010.780 ppb
2022-07-07357300770030.560 ppb
2022-07-07357300770020.890 ppb
2022-07-07357300770010.720 ppb
2022-07-07357300770040.710 ppb
2022-10-03357503430040.600 ppb
2022-10-03357503430030.440 ppb
2022-10-03357503430020.550 ppb
2022-10-03357503430010.460 ppb
2023-01-05357707460040.670 ppb
2023-01-05357707460030.390 ppb
2023-01-05357707460020.390 ppb
2023-01-0535770746001ND
2023-04-12357924710010.490 ppb
2023-04-12357924710020.740 ppb
2023-04-1235792471003ND
2023-04-12357924710040.690 ppb
2023-07-05358112280010.610 ppb
2023-07-05358112280020.860 ppb
2023-07-05358112280030.450 ppb
2023-07-05358112280040.780 ppb
2023-10-16358356870040.830 ppb
2023-10-16358356870030.750 ppb
2023-10-16358356870020.960 ppb
2023-10-16358356870011.10 ppb