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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

South Alabama Utilities 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.

MORE ABOUT THIS CONTAMINANT

 

118

Samples

0

Samples exceeding legal limit (MCL)

98

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.42 ppb1913ND - 10.7 ppb
20154.42 ppb2522ND - 19.6 ppb
20162.63 ppb1817ND - 12.7 ppb
20173.58 ppb1712ND - 21.0 ppb
20184.84 ppb2321ND - 19.1 ppb
20193.44 ppb1613ND - 17.0 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
2014-02-18140219045-24.43 ppb
2014-02-18140219045-43.18 ppb
2014-02-18140219045-31.75 ppb
2014-02-18140219045-51.19 ppb
2014-02-18140219045-1ND
2014-04-23140424027-36.59 ppb
2014-04-23140424027-23.16 ppb
2014-04-23140424027-1ND
2014-04-23140424027-4ND
2014-05-21140521056-12.04 ppb
2014-09-24140925014-45.34 ppb
2014-09-24140925014-52.05 ppb
2014-09-24140925014-31.76 ppb
2014-09-24140925014-2ND
2014-11-19141120033-410.7 ppb
2014-11-19141120033-22.66 ppb
2014-11-19141120033-51.14 ppb
2014-11-19141120033-1ND
2014-11-19141120033-3ND
2015-01-26150127015-614.1 ppb
2015-01-26150127015-55.67 ppb
2015-01-26150127015-12.23 ppb
2015-01-26150127015-21.46 ppb
2015-01-26150127015-31.45 ppb
2015-01-26150127015-81.43 ppb
2015-01-26150127015-70.900 ppb
2015-01-26150127015-40.890 ppb
2015-05-28150529009-219.6 ppb
2015-05-28150529009-315.2 ppb
2015-05-28150529009-110.8 ppb
2015-05-28150529005-54.82 ppb
2015-05-28150529005-23.27 ppb
2015-05-28150529005-31.14 ppb
2015-05-28150529005-4ND
2015-05-28150529005-1ND
2015-09-30151001021-34.40 ppb
2015-09-30151001021-22.58 ppb
2015-09-30151001021-11.99 ppb
2015-09-30151001021-41.78 ppb
2015-12-09151210005-111.8 ppb
2015-12-09151210001-11.98 ppb
2015-12-09151210001-21.88 ppb
2015-12-09151210001-31.16 ppb
2015-12-09151210005-2ND
2016-03-17160318031-52.64 ppb
2016-03-17160318031-12.24 ppb
2016-03-17160318031-41.49 ppb
2016-03-17160318031-31.43 ppb
2016-03-17160318031-20.680 ppb
2016-06-02160602086-15.11 ppb
2016-06-02160602082-22.31 ppb
2016-06-02160602082-12.17 ppb
2016-06-02160602082-31.80 ppb
2016-06-02160602086-21.41 ppb
2016-09-27160928022-35.18 ppb
2016-09-27160928022-12.02 ppb
2016-09-27160928022-41.71 ppb
2016-09-27160928022-20.590 ppb
2016-11-29161130082-212.7 ppb
2016-11-29161130082-42.04 ppb
2016-11-29161130082-31.75 ppb
2016-11-29161130082-1ND
2017-01-23170123032-11.65 ppb
2017-01-23170123032-30.900 ppb
2017-01-23170123032-2ND
2017-02-27170228005-121.0 ppb
2017-02-27170228005-24.45 ppb
2017-04-20170421019-12.22 ppb
2017-04-20170421019-3ND
2017-04-20170421019-2ND
2017-09-27170928026-35.18 ppb
2017-09-27170928026-23.40 ppb
2017-09-27170928026-42.43 ppb
2017-09-27170928026-11.55 ppb
2017-11-28171129028-512.9 ppb
2017-11-28171129028-24.28 ppb
2017-11-28171129028-30.820 ppb
2017-11-28171129028-4ND
2017-11-28171129028-1ND
2018-01-31180201044-58.18 ppb
2018-01-31180201044-32.61 ppb
2018-01-31180201044-21.70 ppb
2018-01-31180201044-11.52 ppb
2018-01-31180201044-41.50 ppb
2018-01-31180201044-61.36 ppb
2018-03-23180326014-416.8 ppb
2018-03-23180326014-214.4 ppb
2018-03-23180326014-53.49 ppb
2018-03-23180326014-33.38 ppb
2018-03-23180326014-1ND
2018-06-21180622035-0013.30 ppb
2018-06-21180622034-0022.60 ppb
2018-06-21180622034-0010.700 ppb
2018-07-23180724031-0036.50 ppb
2018-07-23180724031-0012.00 ppb
2018-07-23180724031-0021.60 ppb
2018-08-0118080032-001A19.1 ppb
2018-10-3018100656-002A14.3 ppb
2018-10-3018100654-002A2.71 ppb
2018-10-3018100654-001A2.20 ppb
2018-10-3018100654-003A1.37 ppb
2018-10-3018100656-001AND
2019-01-0919010303-002A1.82 ppb
2019-01-0919010303-001A1.47 ppb
2019-01-2819010681-002A2.09 ppb
2019-01-2819010681-001A1.03 ppb
2019-03-1319030448-001A5.47 ppb
2019-04-2219040661-001A7.80 ppb
2019-05-2119050613-001A2.30 ppb
2019-05-2119050613-002A1.10 ppb
2019-08-0120115314002_IVOC9.50 ppb
2019-08-0120115314003_IVOC1.90 ppb
2019-08-0120115314001_IVOCND
2019-10-1420125893002_IVOC17.0 ppb
2019-10-1420125893001_IVOCND
2019-10-2320127298003_IVOC1.80 ppb
2019-10-2320127298004_IVOC1.80 ppb
2019-10-2320127298002_IVOCND