Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chloroform

Cape Fear Public Utility Authority - Wilmington

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

 

199

Samples

0

Samples exceeding legal limit (MCL)

196

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201428.7 ppb323212.0 ppb - 59.0 ppb
201522.7 ppb32329.80 ppb - 40.0 ppb
201618.2 ppb32329.10 ppb - 30.0 ppb
201710.8 ppb32323.90 ppb - 29.0 ppb
201818.5 ppb32321.60 ppb - 41.0 ppb
20194.25 ppb3936ND - 15.0 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
2014-01-0720140108047821.0 ppb
2014-01-0720140108047915.0 ppb
2014-01-0720140108048031.0 ppb
2014-01-0720140108048120.0 ppb
2014-01-0720140108048214.0 ppb
2014-01-0720140108048326.0 ppb
2014-01-0720140108048420.0 ppb
2014-01-0720140108048519.0 ppb
2014-04-1420140415042918.0 ppb
2014-04-1420140415043012.0 ppb
2014-04-1420140415043124.0 ppb
2014-04-1420140415043212.0 ppb
2014-04-1420140415042713.0 ppb
2014-04-1420140415043320.0 ppb
2014-04-1420140415043421.0 ppb
2014-04-1420140415043515.0 ppb
2014-07-0720140710028536.0 ppb
2014-07-0720140710028631.0 ppb
2014-07-0720140710028727.0 ppb
2014-07-0720140710028834.0 ppb
2014-07-0720140710028927.0 ppb
2014-07-0720140710029041.0 ppb
2014-07-0720140710029136.0 ppb
2014-07-0720140710029243.0 ppb
2014-10-0720141008059934.0 ppb
2014-10-0720141008060026.0 ppb
2014-10-0720141008060154.0 ppb
2014-10-0720141008060228.0 ppb
2014-10-0720141008060353.0 ppb
2014-10-0720141008060459.0 ppb
2014-10-0720141008060546.0 ppb
2014-10-0720141008059843.0 ppb
2015-01-0630.0 ppb
2015-01-0614.0 ppb
2015-01-0632.0 ppb
2015-01-0640.0 ppb
2015-01-0617.0 ppb
2015-01-0628.0 ppb
2015-01-0616.0 ppb
2015-01-0614.0 ppb
2015-04-0724.0 ppb
2015-04-0727.0 ppb
2015-04-0718.0 ppb
2015-04-0720.0 ppb
2015-04-0716.0 ppb
2015-04-079.80 ppb
2015-04-0725.0 ppb
2015-04-0716.0 ppb
2015-07-0734.0 ppb
2015-07-0731.0 ppb
2015-07-0729.0 ppb
2015-07-0720.0 ppb
2015-07-0730.0 ppb
2015-07-0729.0 ppb
2015-07-0728.0 ppb
2015-07-0728.0 ppb
2015-10-0817.0 ppb
2015-10-0820.0 ppb
2015-10-0821.0 ppb
2015-10-0815.0 ppb
2015-10-0819.0 ppb
2015-10-0818.0 ppb
2015-10-0825.0 ppb
2015-10-0817.0 ppb
2016-01-05338212616.0 ppb
2016-01-05338212718.0 ppb
2016-01-05338212826.0 ppb
2016-01-05338212913.0 ppb
2016-01-05338213019.0 ppb
2016-01-05338213121.0 ppb
2016-01-05338213229.0 ppb
2016-01-05338213319.0 ppb
2016-04-05342553611.0 ppb
2016-04-05342553714.0 ppb
2016-04-05342553818.0 ppb
2016-04-05342553913.0 ppb
2016-04-05342554016.0 ppb
2016-04-05342554112.0 ppb
2016-04-05342554217.0 ppb
2016-04-05342554314.0 ppb
2016-07-0634865279.10 ppb
2016-07-06348652815.0 ppb
2016-07-06348652924.0 ppb
2016-07-06348653012.0 ppb
2016-07-06348653123.0 ppb
2016-07-06348653218.0 ppb
2016-07-06348653322.0 ppb
2016-07-06348653410.00 ppb
2016-10-04355891017.0 ppb
2016-10-04355891120.0 ppb
2016-10-04355891230.0 ppb
2016-10-04355891318.0 ppb
2016-10-04355891427.0 ppb
2016-10-04355891515.0 ppb
2016-10-04355891625.0 ppb
2016-10-04355891722.0 ppb
2017-01-0336150954.70 ppb
2017-01-0336150966.10 ppb
2017-01-03361509712.0 ppb
2017-01-0336150985.50 ppb
2017-01-0336150996.60 ppb
2017-01-0336151009.10 ppb
2017-01-03361510111.0 ppb
2017-01-0336151024.30 ppb
2017-04-0436690103.90 ppb
2017-04-0436690114.30 ppb
2017-04-0436690128.30 ppb
2017-04-0436690134.80 ppb
2017-04-0436690145.60 ppb
2017-04-0436690155.50 ppb
2017-04-0436690167.00 ppb
2017-04-0436690174.40 ppb
2017-07-05372646613.0 ppb
2017-07-05372646715.0 ppb
2017-07-05372646829.0 ppb
2017-07-05372646915.0 ppb
2017-07-05372647019.0 ppb
2017-07-05372647123.0 ppb
2017-07-05372647221.0 ppb
2017-07-05372647322.0 ppb
2017-10-0337918085.90 ppb
2017-10-0337918099.00 ppb
2017-10-03379181017.0 ppb
2017-10-0337918118.80 ppb
2017-10-03379181211.0 ppb
2017-10-03379181310.00 ppb
2017-10-03379181413.0 ppb
2017-10-03379181512.0 ppb
2018-01-103851084 1.90 ppb
2018-01-103851085 3.30 ppb
2018-01-103851086 8.40 ppb
2018-01-103851087 2.20 ppb
2018-01-103851088 2.30 ppb
2018-01-103851089 1.60 ppb
2018-01-103851090 12.0 ppb
2018-01-103851091 1.70 ppb
2018-04-033903141 8.10 ppb
2018-04-033903142 8.40 ppb
2018-04-033903143 14.0 ppb
2018-04-033903144 8.10 ppb
2018-04-033903145 9.40 ppb
2018-04-033903146 30.0 ppb
2018-04-033903147 13.0 ppb
2018-04-033903148 9.60 ppb
2018-07-0392390903001TTH 27.0 ppb
2018-07-0392390903002TTH 29.0 ppb
2018-07-0392390903003TTH 41.0 ppb
2018-07-0392390903004TTH 23.0 ppb
2018-07-0392390903005TTH 29.0 ppb
2018-07-0392390903006TTH 31.0 ppb
2018-07-0392390903007TTH 32.0 ppb
2018-07-0392390903008TTH 27.0 ppb
2018-10-094084035 22.0 ppb
2018-10-094084037 24.0 ppb
2018-10-094084039 39.0 ppb
2018-10-094084041 24.0 ppb
2018-10-094084043 26.0 ppb
2018-10-094084045 28.0 ppb
2018-10-094084047 34.0 ppb
2018-10-094084049 21.0 ppb
2019-01-084168385 2.70 ppb
2019-01-084168387 2.70 ppb
2019-01-084168389 6.10 ppb
2019-01-084168391 2.50 ppb
2019-01-084168393 3.10 ppb
2019-01-084168395 2.90 ppb
2019-01-084168397 4.90 ppb
2019-01-084168399 2.70 ppb
2019-04-034248521-1 1.70 ppb
2019-04-034248522-1 2.30 ppb
2019-04-034248523-1 4.00 ppb
2019-04-034248524-1 1.80 ppb
2019-04-034248525-1 2.40 ppb
2019-04-034248526-1 2.70 ppb
2019-04-034248527-1 3.50 ppb
2019-04-034248528-1 2.30 ppb
2019-07-014341108 1.70 ppb
2019-07-014341126 1.10 ppb
2019-07-024343185 3.20 ppb
2019-07-024343187 3.60 ppb
2019-07-024343189 8.70 ppb
2019-07-024343191 3.00 ppb
2019-07-024343193 4.40 ppb
2019-07-024343195 5.30 ppb
2019-07-024343197 7.10 ppb
2019-07-024343199 3.20 ppb
2019-07-024343222 ND
2019-09-164424393 ND
2019-10-014441905 ND
2019-10-014443181 7.70 ppb
2019-10-014443183 8.70 ppb
2019-10-014443185 15.0 ppb
2019-10-014443187 6.70 ppb
2019-10-014443189 8.20 ppb
2019-10-014443191 11.0 ppb
2019-10-014443193 9.60 ppb
2019-10-014443195 5.50 ppb
2019-10-014443199 2.30 ppb
2019-10-014443213 1.50 ppb