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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

West Escambia Utilities Inc.

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

 

76

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.0533 ppb121ND - 0.640 ppb
20150.104 ppb122ND - 0.730 ppb
20160.199 ppb133ND - 1.41 ppb
20170.337 ppb124ND - 1.82 ppb
20180.473 ppb146ND - 1.72 ppb
20190.415 ppb133ND - 2.80 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
2014-03-20140321019-1ND
2014-03-20140321019-4ND
2014-03-20140321019-2ND
2014-03-20140321019-3ND
2014-06-16140617020-1ND
2014-06-16140617020-2ND
2014-09-18140919015-1ND
2014-09-18140919015-3ND
2014-09-18140919015-2ND
2014-12-16141217030-2ND
2014-12-16141217030-10.640 ppb
2014-12-16141217030-3ND
2015-03-18150319029-10.520 ppb
2015-03-18150319029-4ND
2015-03-18150319029-5ND
2015-03-18150319029-6ND
2015-06-18150619017-10.730 ppb
2015-06-18150619017-2ND
2015-09-24150925030-1ND
2015-09-24150925030-3ND
2015-09-24150925030-2ND
2015-12-21151222011-2ND
2015-12-21151222011-1ND
2015-12-21151222011-3ND
2016-03-24160325009-11.41 ppb
2016-03-24160325009-4ND
2016-03-24160325009-3ND
2016-03-24160325009-2ND
2016-06-20160621026-30.630 ppb
2016-06-20160621026-2ND
2016-06-20160621026-1ND
2016-09-22160923020-3ND
2016-09-22160923020-1ND
2016-09-22160923020-20.550 ppb
2016-12-20161221021-1ND
2016-12-20161221021-2ND
2016-12-20161221021-3ND
2017-03-21170322042-4ND
2017-03-21170322042-1ND
2017-03-21170322042-20.570 ppb
2017-03-21170322042-3ND
2017-06-19170620030-10.940 ppb
2017-06-19170620030-20.710 ppb
2017-09-21170922003-2ND
2017-09-21170922003-3ND
2017-09-21170922003-11.82 ppb
2017-12-20171221038-2ND
2017-12-20171221038-3ND
2017-12-20171221038-1ND
2018-03-19180320039-30.700 ppb
2018-03-19180320039-2ND
2018-03-19180320039-4ND
2018-03-19180320039-10.530 ppb
2018-06-18180619008-0011.70 ppb
2018-06-18180619008-2ND
2018-06-18180619008-002ND
2018-06-18180619008-11.72 ppb
2018-09-2018090606-002A1.39 ppb
2018-09-2018090606-003AND
2018-09-2018090606-001AND
2018-10-1618100509-002AND
2018-10-1618100509-001AND
2018-10-1618100509-003A0.580 ppb
2019-03-1819030538-001A1.30 ppb
2019-03-1819030538-003AND
2019-03-1819030538-004AND
2019-03-1819030538-002AND
2019-06-0620107326001_IVOC1.30 ppb
2019-06-0620107326002_IVOCND
2019-07-2220113944001_IVOC2.80 ppb
2019-07-2220113944002_IVOCND
2019-07-2220113944003_IVOCND
2019-12-1720135288004_IVOCND
2019-12-1720135288002_IVOCND
2019-12-1720135288001_IVOCND
2019-12-1720135288003_IVOCND