Know Your Environment. Protect Your Health.

Chloroform

Foothills Mobile Home Ranch

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.07 ppb31ND - 3.20 ppb
20190.475 ppb41ND - 1.90 ppb
2020ND30ND
2021ND30ND
20220.375 ppb41ND - 1.50 ppb
2023ND30ND

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
2018-01-31AE11609ND
2018-01-31AE11611ND
2018-01-31AE116073.20 ppb
2019-03-11AE57833ND
2019-03-11AE578571.90 ppb
2019-03-11AE57871ND
2019-06-24AE71714ND
2020-03-25AF04538ND
2020-03-25AF04544ND
2020-03-25AF04546ND
2021-02-03AF42462ND
2021-06-14AF57788ND
2021-06-14AF57792ND
2022-03-02AF872671.50 ppb
2022-06-29AG02738ND
2022-06-29AG02797ND
2022-06-29AG02831ND
2023-03-07Q2309795001ND
2023-06-12AG44029ND
2023-06-12AG44031ND