Know Your Environment. Protect Your Health.

Chloroform

Baywood Estates Subdivision

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

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
20180.310 ppb440.280 ppb - 0.340 ppb
20190.340 ppb42ND - 0.680 ppb
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was 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 and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-08-01354082580010.340 ppb
2018-08-01354082580020.280 ppb
2018-08-01354082580010.340 ppb
2018-08-01354082580020.280 ppb
2019-08-0135486639001ND
2019-08-01354866390020.680 ppb
2019-08-0135486639001ND
2019-08-01354866390020.680 ppb
2020-08-0735568977001ND
2020-08-0735568977002ND
2021-08-0635653777001ND
2021-08-0635653777002ND
2022-08-0935739073001ND
2022-08-0935739073002ND
2023-08-0235818077001ND
2023-08-0235818077002ND