Know Your Environment. Protect Your Health.

Chloroform

Aquarion Water Company of Connecticut - Simsbury 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.

 

72

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.464 ppb144ND - 3.00 ppb
20190.381 ppb165ND - 3.00 ppb
20200.670 ppb104ND - 3.00 ppb
20210.660 ppb106ND - 2.00 ppb
20220.717 ppb126ND - 2.00 ppb
20230.590 ppb105ND - 2.00 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
2018-02-08201801804-VOC1ND
2018-02-08201801800-VOC10.700 ppb
2018-04-04201804071-VOC1ND
2018-04-04201804077-VOC1ND
2018-04-04201804080-VOC1ND
2018-04-04201804075-VOC1ND
2018-04-04201804073-VOC1ND
2018-05-03201806044-VOC1ND
2018-05-08201806393-VOC1ND
2018-08-09201812047-VOC1ND
2018-08-22201812877-DBP2.00 ppb
2018-08-22201812878-DBP3.00 ppb
2018-11-07201817345-VOC10.800 ppb
2018-11-07201817335-VOC1ND
2019-02-05201901699-VOC1ND
2019-02-05201901703-VOC1ND
2019-03-06201902905-VOC1ND
2019-03-06201902900-VOC1ND
2019-03-06201902898-VOC1ND
2019-03-06201902902-VOC1ND
2019-03-06201902893-VOC1ND
2019-03-06201902896-VOC1ND
2019-05-09201906456-VOC10.800 ppb
2019-05-09201906438-VOC1ND
2019-08-07201912408-VOC1ND
2019-08-14201912905-VOC10.600 ppb
2019-08-21201913479-DBP1.000 ppb
2019-08-21201913478-DBP3.00 ppb
2019-11-06201918268-VOC1ND
2019-11-14201918766-VOC10.700 ppb
2020-02-07202002047-VOC1ND
2020-04-22202005601-VOC1ND
2020-04-22202005610-VOC1ND
2020-04-22202005606-VOC1ND
2020-04-22202005613-VOC1ND
2020-05-08202006533-VOC10.600 ppb
2020-08-05202011978-VOC11.10 ppb
2020-08-19202013197-DBP3.00 ppb
2020-08-19202013198-DBP2.00 ppb
2020-11-05202018142-VOC1ND
2021-02-05202101670-VOC1ND
2021-05-06202106424-VOC10.600 ppb
2021-05-06202106418-VOC1ND
2021-05-06202106421-VOC11.000 ppb
2021-05-06202106419-VOC1ND
2021-05-06202106422-VOC1ND
2021-08-05202112374-VOC10.700 ppb
2021-08-17202113202-DBP1.000 ppb
2021-08-17202113201-DBP2.00 ppb
2021-11-04202118191-VOC11.30 ppb
2022-02-03202202007-VOC1ND
2022-02-11202202472-VOC10.800 ppb
2022-05-05202207067-VOC1ND
2022-05-05202207066-VOC1ND
2022-05-05202207064-VOC10.700 ppb
2022-05-05202207063-VOC1ND
2022-08-02202213382-VOC11.10 ppb
2022-08-02202213380-VOC1ND
2022-08-15202214366-DBP2.00 ppb
2022-08-15202214367-DBP2.00 ppb
2022-11-10202220740-VOC12.00 ppb
2022-11-10202220739-VOC1ND
2023-02-09202302186-VOC1ND
2023-02-09202302187-VOC1ND
2023-05-03202307226-VOC1ND
2023-05-03202307228-VOC1ND
2023-05-03202307227-VOC1ND
2023-06-01202309022-VOC10.800 ppb
2023-08-10202314269-VOC10.900 ppb
2023-08-22202315335-DBP2.00 ppb
2023-08-22202315336-DBP1.000 ppb
2023-11-08202320728-VOC11.20 ppb