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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Aqua NJ - Eastern Division

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.201 ppb166ND - 1.21 ppb
20150.141 ppb166ND - 0.510 ppb
20160.233 ppb168ND - 0.710 ppb
20170.535 ppb1610ND - 1.83 ppb
20180.373 ppb167ND - 1.49 ppb
20190.244 ppb164ND - 1.66 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
2014-02-03A16069ND
2014-02-03A16068ND
2014-02-03A16070ND
2014-02-03A16067ND
2014-05-05A16531ND
2014-05-05A16533ND
2014-05-05A16532ND
2014-05-05A165340.800 ppb
2014-08-04A17197ND
2014-08-04A171980.330 ppb
2014-08-04A172000.220 ppb
2014-08-04A171990.290 ppb
2014-11-03A177070.360 ppb
2014-11-03A17706ND
2014-11-03A17705ND
2014-11-03A177081.21 ppb
2015-02-02A183810.370 ppb
2015-02-02A18379ND
2015-02-02A18378ND
2015-02-02A183850.310 ppb
2015-05-15D8080ND
2015-05-15D8081ND
2015-05-15D8078ND
2015-05-15D8079ND
2015-08-03A195660.510 ppb
2015-08-03A19567ND
2015-08-03A19568ND
2015-08-03A195650.320 ppb
2015-11-02A20183ND
2015-11-02A201820.440 ppb
2015-11-02A20184ND
2015-11-02A201810.300 ppb
2016-02-01A207560.250 ppb
2016-02-01A20755ND
2016-02-01A20754ND
2016-02-01A20753ND
2016-05-02A21374ND
2016-05-02A213760.240 ppb
2016-05-02A213770.710 ppb
2016-05-02A21375ND
2016-08-01A22084ND
2016-08-01A220860.320 ppb
2016-08-01A220850.490 ppb
2016-08-01A22081ND
2016-11-01A22674ND
2016-11-01A226750.400 ppb
2016-11-01A226760.610 ppb
2016-11-01A226730.710 ppb
2017-02-01A232210.510 ppb
2017-02-01A232220.260 ppb
2017-02-01A232230.490 ppb
2017-02-01A23224ND
2017-05-02A238671.83 ppb
2017-05-02A238640.430 ppb
2017-05-02A23865ND
2017-05-02A23866ND
2017-08-01A245131.15 ppb
2017-08-01A245150.940 ppb
2017-08-01A245140.890 ppb
2017-08-01A245171.19 ppb
2017-11-01A25156ND
2017-11-01A251580.870 ppb
2017-11-01A25157ND
2017-11-01A25155ND
2018-02-01A256460.700 ppb
2018-02-01A256450.500 ppb
2018-02-01A25647ND
2018-02-01A256480.510 ppb
2018-05-01A261780.990 ppb
2018-05-01A26179ND
2018-05-01A26180ND
2018-05-01A26177ND
2018-08-02A268401.49 ppb
2018-08-02A26841ND
2018-08-02A268431.11 ppb
2018-08-02A26842ND
2018-11-01A27490ND
2018-11-01A27491ND
2018-11-01A274890.670 ppb
2018-11-01A27492ND
2019-02-08A28118ND
2019-02-08A28116ND
2019-02-08A28103ND
2019-02-08A28117ND
2019-05-10A28612ND
2019-05-10A286131.66 ppb
2019-05-10A286110.590 ppb
2019-05-10A28614ND
2019-08-12A292631.04 ppb
2019-08-12A29264ND
2019-08-12A29266ND
2019-08-12A29265ND
2019-11-063-A29902ND
2019-11-063-A29903ND
2019-11-063-A29900ND
2019-11-063-A299010.610 ppb