Know Your Environment. Protect Your Health.

Chloroform

Waterworks 1 of Morehouse Inc.

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.600 ppb42ND - 1.20 ppb
20200.660 ppb220.550 ppb - 0.770 ppb
20210.118 ppb41ND - 0.470 ppb
2022ND20ND
20230.320 ppb21ND - 0.640 ppb

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
2018-08-2035412804001ND
2018-08-2035412804002ND
2018-08-2035412804001ND
2018-08-2035412804002ND
2019-08-01354871410021.20 ppb
2019-08-0135487141001ND
2019-08-01354871410021.20 ppb
2019-08-0135487141001ND
2020-08-13355710150020.770 ppb
2020-08-13355710150010.550 ppb
2021-08-1635657395001ND
2021-08-1635657395002ND
2021-09-1235664408001ND
2021-09-12356644080020.470 ppb
2022-08-1535740738001ND
2022-08-1535740738002ND
2023-08-17358217020010.640 ppb
2023-08-1735821702002ND