Know Your Environment. Protect Your Health.

Chloroform

Hoschton 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.

 

61

Samples

0

Samples exceeding legal limit (MCL)

53

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201850.9 ppb8825.0 ppb - 76.0 ppb
201939.6 ppb775.10 ppb - 58.0 ppb
202026.5 ppb1211ND - 70.0 ppb
202121.0 ppb1410ND - 78.0 ppb
202233.9 ppb109ND - 87.0 ppb
202325.9 ppb108ND - 83.0 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
2018-03-19AJ8618047.0 ppb
2018-03-19AJ8618136.0 ppb
2018-06-18AJ9187874.0 ppb
2018-06-18AJ9187976.0 ppb
2018-09-17AK0131151.0 ppb
2018-09-17AK0131272.0 ppb
2018-12-12AK0809026.0 ppb
2018-12-12AK0808925.0 ppb
2019-03-20AK1364746.0 ppb
2019-03-20AK1364640.0 ppb
2019-06-18AK1999647.0 ppb
2019-09-18AK3120758.0 ppb
2019-09-18AK3120651.0 ppb
2019-12-18AK3862530.0 ppb
2019-12-18AK386245.10 ppb
2020-01-27AK40287ND
2020-03-19AK4359342.0 ppb
2020-03-19AK4359245.0 ppb
2020-04-27AK450530.550 ppb
2020-06-16AK4851348.0 ppb
2020-06-16AK4851470.0 ppb
2020-07-23AK523780.530 ppb
2020-09-24AK5997144.0 ppb
2020-09-24AK5997022.0 ppb
2020-10-21AK630470.730 ppb
2020-12-30AK6718533.0 ppb
2020-12-30AK6718412.0 ppb
2021-01-28AK68443ND
2021-02-24AK7017925.0 ppb
2021-02-24AK7017811.0 ppb
2021-05-11AK749490.550 ppb
2021-06-17AK7766429.0 ppb
2021-06-17AK7766569.0 ppb
2021-07-27AK813690.710 ppb
2021-07-27AK81370ND
2021-08-09AK8255833.0 ppb
2021-08-09AK8255978.0 ppb
2021-10-19AK89325ND
2021-10-19AK89324ND
2021-12-07AK9208437.0 ppb
2021-12-07AK9208311.0 ppb
2022-01-31AK943780.570 ppb
2022-01-31AK94379ND
2022-02-23AK9594413.0 ppb
2022-02-23AK9594540.0 ppb
2022-05-25AL0201841.0 ppb
2022-05-25AL0201987.0 ppb
2022-08-25AL1175673.0 ppb
2022-08-25AL1175540.0 ppb
2022-12-08AL2193133.0 ppb
2022-12-08AL2193011.0 ppb
2023-02-28AL2629454.0 ppb
2023-02-28AL2629316.0 ppb
2023-03-28AL27992ND
2023-03-28AL27993ND
2023-05-04AL3100517.0 ppb
2023-05-04AL3100683.0 ppb
2023-08-22AL4122729.0 ppb
2023-08-22AL4122833.0 ppb
2023-11-16AL4944822.0 ppb
2023-11-16AL494475.20 ppb