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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Bridgeton City 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

 

105

Samples

0

Samples exceeding legal limit (MCL)

71

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.05 ppb2019ND - 3.51 ppb
20151.27 ppb1817ND - 2.55 ppb
20161.98 ppb1817ND - 4.40 ppb
20171.06 ppb17170.1000 ppb - 2.50 ppb
20180.863 ppb1612ND - 2.90 ppb
20190.638 ppb167ND - 1.90 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
2014-02-04L4869265-21.96 ppb
2014-02-04L4869265-42.46 ppb
2014-02-04L4869265-32.69 ppb
2014-02-04L4869265-12.12 ppb
2014-05-13L4974692-22.60 ppb
2014-05-13L4974692-33.51 ppb
2014-05-13L4974692-12.59 ppb
2014-05-13L4974692-4ND
2014-05-20L1324501-10.440 ppb
2014-05-20L1324501-20.0700 ppb
2014-05-20L1324501-32.04 ppb
2014-05-20L1324501-41.46 ppb
2014-08-12L5101570-32.92 ppb
2014-08-12L5101570-43.44 ppb
2014-08-12L5101570-21.36 ppb
2014-08-12L5101570-11.27 ppb
2014-11-13L5247491-32.00 ppb
2014-11-13L5247491-42.69 ppb
2014-11-13L5247491-23.01 ppb
2014-11-13L5247491-12.44 ppb
2015-02-18L5364422-21.82 ppb
2015-02-18L5364422-32.55 ppb
2015-02-18L5364422-11.27 ppb
2015-02-18L5364422-40.260 ppb
2015-04-14L4093436-1ND
2015-04-14L4093436-20.410 ppb
2015-05-12L5497476-21.23 ppb
2015-05-12L5497476-31.34 ppb
2015-05-12L5497476-10.850 ppb
2015-05-12L5497476-40.140 ppb
2015-08-18L5652037-21.75 ppb
2015-08-18L5652037-32.47 ppb
2015-08-18L5652037-11.36 ppb
2015-08-18L5652037-40.220 ppb
2015-11-10L5817542-31.93 ppb
2015-11-10L5817542-42.53 ppb
2015-11-10L5817542-22.29 ppb
2015-11-10L5817542-10.410 ppb
2016-02-18L5966476-22.70 ppb
2016-02-18L5966476-33.20 ppb
2016-02-18L5966476-13.90 ppb
2016-02-18L5966476-40.300 ppb
2016-04-12L6176398-1ND
2016-04-12L6176398-20.600 ppb
2016-05-02L6125332-21.20 ppb
2016-05-02L6125332-13.80 ppb
2016-05-02L6125332-42.10 ppb
2016-05-03L6125332-34.30 ppb
2016-08-02L6313062-34.10 ppb
2016-08-02L6313062-42.40 ppb
2016-08-02L6313062-24.40 ppb
2016-08-02L6313062-10.200 ppb
2016-11-01L6527284-40.400 ppb
2016-11-01L6527284-31.70 ppb
2016-11-01L6527284-20.300 ppb
2016-11-01L6527284-10.1000 ppb
2017-02-07L6596946-42.20 ppb
2017-02-07L6596946-31.40 ppb
2017-02-07L6596946-20.500 ppb
2017-02-07L6596946-10.200 ppb
2017-05-02L6718484-32.10 ppb
2017-05-02L6718484-41.000 ppb
2017-05-02L6718484-20.700 ppb
2017-05-02L6718484-10.300 ppb
2017-05-30L6715706-12.50 ppb
2017-08-08L6853326-31.50 ppb
2017-08-08L6853326-41.000 ppb
2017-08-08L6853326-21.70 ppb
2017-08-08L6853326-10.200 ppb
2017-11-06L6949015-31.80 ppb
2017-11-06L6949015-40.600 ppb
2017-11-06L6949015-20.300 ppb
2017-11-06L6949015-10.1000 ppb
2018-02-13L6980987-32.90 ppb
2018-02-13L6980987-41.10 ppb
2018-02-13L6980987-20.300 ppb
2018-02-13L6980987-1ND
2018-05-01L7007127-32.50 ppb
2018-05-01L7007127-40.500 ppb
2018-05-01L7007127-20.200 ppb
2018-05-01L7007127-1ND
2018-08-07L7038264-31.60 ppb
2018-08-07L7038264-40.500 ppb
2018-08-07L7038264-20.300 ppb
2018-08-07L7038264-1ND
2018-11-07L7069905-32.60 ppb
2018-11-07L7069905-41.000 ppb
2018-11-07L7069905-20.300 ppb
2018-11-07L7069905-1ND
2019-02-0530145680031.60 ppb
2019-02-053014568004ND
2019-02-053014568002ND
2019-02-053014568001ND
2019-05-1430337360031.10 ppb
2019-05-1430337360041.70 ppb
2019-05-1430337360021.70 ppb
2019-05-143033736001ND
2019-08-063049872003ND
2019-08-0630498720041.000 ppb
2019-08-0630498720021.20 ppb
2019-08-063049872001ND
2019-11-063068365003ND
2019-11-0630683650041.90 ppb
2019-11-063068365002ND
2019-11-063068365001ND