Know Your Environment. Protect Your Health.

Chloroform

Crawfordville Water System

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)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20190.925 ppb41ND - 3.70 ppb
20200.800 ppb21ND - 1.60 ppb
20211.10 ppb21ND - 2.20 ppb
20220.575 ppb41ND - 2.30 ppb
20231.35 ppb21ND - 2.70 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
2018-05-24AJ90171ND
2018-09-13AK01040ND
2019-05-16AK17725ND
2019-05-16AK17726ND
2019-05-16AK177273.70 ppb
2019-09-12AK30352ND
2020-06-04AK47378ND
2020-09-01AK569941.60 ppb
2021-03-25AK71829ND
2021-09-20AK863842.20 ppb
2022-04-07AK98570ND
2022-09-29AL168632.30 ppb
2022-12-20AL22779ND
2022-12-28AL23053ND
2023-01-30AL24270ND
2023-09-07AL431092.70 ppb