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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Cordele

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

 

118

Samples

0

Samples exceeding legal limit (MCL)

82

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.27 ppb2314ND - 18.0 ppb
20151.44 ppb2012ND - 8.20 ppb
20162.59 ppb1913ND - 17.0 ppb
20171.73 ppb2214ND - 11.0 ppb
20182.68 ppb1713ND - 13.0 ppb
20193.82 ppb1716ND - 18.0 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
2014-01-06AI260152.20 ppb
2014-01-06AI26016ND
2014-01-06AI260171.20 ppb
2014-01-06AI26018ND
2014-04-21AI384262.60 ppb
2014-04-21AI38427ND
2014-04-21AI384281.40 ppb
2014-04-21AI384291.30 ppb
2014-07-29AI473516.90 ppb
2014-07-29AI473521.50 ppb
2014-07-29AI4735318.0 ppb
2014-07-29AI473542.60 ppb
2014-09-22AI54965ND
2014-09-22AI549668.00 ppb
2014-09-22AI54967ND
2014-09-22AI54968ND
2014-09-22AI549691.000 ppb
2014-09-22AI54970ND
2014-10-14AI57482ND
2014-10-27AI58433ND
2014-10-27AI584341.30 ppb
2014-10-27AI584352.90 ppb
2014-10-27AI584361.40 ppb
2015-01-12AI62684ND
2015-01-26AI63474ND
2015-01-26AI63475ND
2015-01-26AI634761.80 ppb
2015-01-26AI63477ND
2015-04-06AI742000.550 ppb
2015-04-06AI74214ND
2015-04-06AI74215ND
2015-04-06AI742166.30 ppb
2015-04-06AI742171.40 ppb
2015-07-13AI828150.590 ppb
2015-07-27AI84235ND
2015-07-27AI842361.20 ppb
2015-07-27AI842372.10 ppb
2015-07-27AI842388.20 ppb
2015-10-13AI927510.580 ppb
2015-10-26AI99787ND
2015-10-26AI997881.60 ppb
2015-10-26AI997892.30 ppb
2015-10-26AI997902.20 ppb
2016-01-11AJ04133ND
2016-01-25AJ04923ND
2016-01-25AJ04924ND
2016-01-25AJ049251.90 ppb
2016-01-25AJ04926ND
2016-04-25AJ107630.700 ppb
2016-04-25AJ10768ND
2016-04-25AJ107691.60 ppb
2016-04-25AJ107704.80 ppb
2016-04-25AJ107711.50 ppb
2016-07-12AJ173670.750 ppb
2016-08-01AJ20453ND
2016-08-01AJ204542.20 ppb
2016-08-01AJ2045517.0 ppb
2016-08-01AJ204563.60 ppb
2016-10-24AJ319824.80 ppb
2016-10-24AJ319831.40 ppb
2016-10-24AJ319847.20 ppb
2016-10-24AJ319851.70 ppb
2017-01-24AJ43437ND
2017-01-24AJ43438ND
2017-01-24AJ434392.30 ppb
2017-01-24AJ434401.20 ppb
2017-04-24AJ53814ND
2017-04-24AJ538158.00 ppb
2017-04-24AJ538160.890 ppb
2017-04-24AJ53817ND
2017-04-24AJ53818ND
2017-04-24AJ53819ND
2017-04-24AJ53883ND
2017-04-24AJ538841.30 ppb
2017-04-24AJ538851.30 ppb
2017-04-24AJ538861.10 ppb
2017-07-24AJ615651.30 ppb
2017-07-24AJ615661.30 ppb
2017-07-24AJ615673.10 ppb
2017-07-24AJ615682.20 ppb
2017-10-24AJ72337ND
2017-10-24AJ723381.30 ppb
2017-10-24AJ7233911.0 ppb
2017-10-24AJ723401.70 ppb
2018-01-23AJ77023ND
2018-01-23AJ770241.10 ppb
2018-01-23AJ770252.00 ppb
2018-01-23AJ770261.40 ppb
2018-03-05AJ85010ND
2018-04-23AJ87903ND
2018-04-23AJ879041.60 ppb
2018-04-23AJ879057.60 ppb
2018-04-23AJ879061.50 ppb
2018-08-07AJ967611.30 ppb
2018-08-07AJ967623.60 ppb
2018-08-07AJ9676313.0 ppb
2018-08-07AJ967642.40 ppb
2018-10-23AK04623ND
2018-10-23AK046242.80 ppb
2018-10-23AK046255.80 ppb
2018-10-23AK046261.50 ppb
2019-01-22AK09751ND
2019-01-22AK097521.90 ppb
2019-01-22AK097532.70 ppb
2019-01-22AK097541.20 ppb
2019-03-12AK131420.810 ppb
2019-04-22AK156371.10 ppb
2019-04-22AK156382.20 ppb
2019-04-22AK156397.70 ppb
2019-04-22AK156401.90 ppb
2019-07-22AK230381.20 ppb
2019-07-22AK230392.80 ppb
2019-07-22AK2304018.0 ppb
2019-07-22AK230413.40 ppb
2019-10-21AK353511.30 ppb
2019-10-21AK353523.20 ppb
2019-10-21AK3535313.0 ppb
2019-10-21AK353542.50 ppb