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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

New Britain Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

88

Samples

0

Samples exceeding legal limit (MCL)

88

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201426.0 ppb1126.0 ppb
201521.0 ppb1121.0 ppb
201625.0 ppb1125.0 ppb
201738.7 ppb181821.7 ppb - 55.0 ppb
201834.4 ppb343416.1 ppb - 64.1 ppb
201930.6 ppb33338.50 ppb - 69.2 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-10E407B06-1VOC26.0 ppb
2015-07-10E507B87-1VOC21.0 ppb
2016-07-12E607B90-1VOC25.0 ppb
2017-07-118042-03890VOC134.6 ppb
2017-08-16DBP 20047470735.4 ppb
2017-08-16DBP 20047471052.4 ppb
2017-08-16DBP 20047470955.0 ppb
2017-08-16DBP 20047470853.7 ppb
2017-08-16DBP 20047470645.1 ppb
2017-08-16DBP 20047470539.4 ppb
2017-08-16DBP 20047470431.2 ppb
2017-08-16DBP 20047470332.5 ppb
2017-11-15DBP 20048217325.0 ppb
2017-11-15DBP 20048218125.8 ppb
2017-11-15DBP 20048218042.9 ppb
2017-11-15DBP 20048217954.9 ppb
2017-11-15DBP 20048217854.2 ppb
2017-11-15DBP 20048217728.0 ppb
2017-11-15DBP 20048217634.6 ppb
2017-11-15DBP 20048217529.7 ppb
2017-11-15DBP 20048217421.7 ppb
2018-02-22DBP 20048858018.6 ppb
2018-02-22DBP 20048858728.6 ppb
2018-02-22DBP 20048858637.6 ppb
2018-02-22DBP 20048858536.7 ppb
2018-02-22DBP 20048858324.1 ppb
2018-02-22DBP 20048858223.5 ppb
2018-02-22DBP 20048858116.1 ppb
2018-02-22DBP 20048858420.2 ppb
2018-05-16DBP 20049489223.4 ppb
2018-05-16DBP 20049489533.3 ppb
2018-05-16DBP 20049489438.5 ppb
2018-05-16DBP 20049489339.7 ppb
2018-05-16DBP 20049489128.2 ppb
2018-05-16DBP 20049489025.0 ppb
2018-05-16DBP 20049488918.3 ppb
2018-05-16DBP 20049488822.2 ppb
2018-06-20VOC1 20049753429.3 ppb
2018-08-14DBP 20050230764.1 ppb
2018-08-14DBP 20050230658.0 ppb
2018-08-14DBP 20050230561.8 ppb
2018-08-14DBP 20050230441.7 ppb
2018-08-14DBP 20050230246.5 ppb
2018-08-14DBP 20050230134.5 ppb
2018-08-14DBP 20050230038.6 ppb
2018-08-14DBP 20050230349.2 ppb
2018-11-14DBP 20051265427.2 ppb
2018-11-14DBP 20051265238.8 ppb
2018-11-14DBP 20051265149.4 ppb
2018-11-14DBP 20051265053.3 ppb
2018-11-14DBP 20051264836.0 ppb
2018-11-14DBP 20051264730.7 ppb
2018-11-14DBP 20051264620.4 ppb
2018-11-14DBP 20051264527.0 ppb
2018-11-14DBP 20051264929.0 ppb
2019-02-20DBP 20052230017.2 ppb
2019-02-20DBP 20052230415.6 ppb
2019-02-20DBP 20052230324.8 ppb
2019-02-20DBP 20052230225.5 ppb
2019-02-20DBP 20052230111.8 ppb
2019-02-20DBP 20052229913.2 ppb
2019-02-20DBP 2005222988.50 ppb
2019-02-20DBP 2005222979.30 ppb
2019-05-16DBP 20053256929.5 ppb
2019-05-16DBP 20053256832.6 ppb
2019-05-16DBP 20053256422.8 ppb
2019-05-16DBP 20053256742.6 ppb
2019-05-16DBP 20053256526.2 ppb
2019-05-16DBP 20053256315.8 ppb
2019-05-16DBP 20053256219.5 ppb
2019-05-16DBP 20053256622.1 ppb
2019-06-12VOC1 20053599519.3 ppb
2019-08-20DBP 20054557968.2 ppb
2019-08-20DBP 20054558169.2 ppb
2019-08-20DBP 20054558066.7 ppb
2019-08-20DBP 20054557842.8 ppb
2019-08-20DBP 20054557763.7 ppb
2019-08-20DBP 20054557654.5 ppb
2019-08-20DBP 20054557534.0 ppb
2019-08-20DBP 20054557433.4 ppb
2019-11-21DBP 20055768919.0 ppb
2019-11-21DBP 20055769016.0 ppb
2019-11-21DBP 20055769125.7 ppb
2019-11-21DBP 20055769226.8 ppb
2019-11-21DBP 20055769321.9 ppb
2019-11-21DBP 20055769444.8 ppb
2019-11-21DBP 20055769540.9 ppb
2019-11-21DBP 20055769626.9 ppb