Chloroform
Passaic Valley Water Commission
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 26.2 ppb | 48 | 48 | 10.1 ppb - 50.6 ppb |
2015 | 26.2 ppb | 48 | 48 | 5.97 ppb - 52.8 ppb |
2016 | 24.5 ppb | 48 | 48 | 9.36 ppb - 45.2 ppb |
2017 | 25.3 ppb | 48 | 48 | 5.59 ppb - 41.9 ppb |
2018 | 29.1 ppb | 48 | 48 | 12.7 ppb - 53.1 ppb |
2019 | 28.6 ppb | 48 | 48 | 11.5 ppb - 61.6 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 |
---|---|---|
2014-02-03 | AB46660TH | 10.4 ppb |
2014-02-03 | AB46673TH | 14.5 ppb |
2014-02-03 | AB46674TH | 16.0 ppb |
2014-02-03 | AB46672TH | 10.1 ppb |
2014-02-03 | AB46675TH | 14.4 ppb |
2014-02-03 | AB46658TH | 18.7 ppb |
2014-02-04 | AB46769TH | 17.6 ppb |
2014-02-04 | AB46767TH | 15.4 ppb |
2014-02-04 | AB46790TH | 13.9 ppb |
2014-02-06 | AB46894TH | 11.4 ppb |
2014-02-06 | AB46892TH | 20.4 ppb |
2014-02-06 | AB46889TH | 12.7 ppb |
2014-05-05 | AB50363TH | 28.9 ppb |
2014-05-05 | AB50343TH | 25.4 ppb |
2014-05-05 | AB50347TH | 41.9 ppb |
2014-05-05 | AB50340TH | 26.3 ppb |
2014-05-05 | AB50348TH | 23.6 ppb |
2014-05-05 | AB50360TH | 28.3 ppb |
2014-05-06 | AB50446TH | 39.7 ppb |
2014-05-06 | AB50444TH | 35.2 ppb |
2014-05-06 | AB50473TH | 23.4 ppb |
2014-05-07 | AB50583TH | 23.6 ppb |
2014-05-07 | AB50581TH | 29.0 ppb |
2014-05-07 | AB50578TH | 39.5 ppb |
2014-08-04 | AB54160TH | 38.3 ppb |
2014-08-04 | AB54127TH | 32.5 ppb |
2014-08-04 | AB54131TH | 40.5 ppb |
2014-08-04 | AB54124TH | 34.3 ppb |
2014-08-04 | AB54132TH | 23.4 ppb |
2014-08-04 | AB54157TH | 41.3 ppb |
2014-08-05 | AB54220TH | 40.9 ppb |
2014-08-05 | AB54218TH | 36.5 ppb |
2014-08-05 | AB54264TH | 38.4 ppb |
2014-08-06 | AB54377TH | 36.4 ppb |
2014-08-06 | AB54375TH | 50.6 ppb |
2014-08-06 | AB54372TH | 41.5 ppb |
2014-11-03 | AB57891TH | 23.3 ppb |
2014-11-03 | AB57859TH | 23.5 ppb |
2014-11-03 | AB57863TH | 20.8 ppb |
2014-11-03 | AB57856TH | 23.5 ppb |
2014-11-03 | AB57864TH | 32.7 ppb |
2014-11-03 | AB57888TH | 19.3 ppb |
2014-11-04 | AB57934TH | 20.1 ppb |
2014-11-04 | AB57932TH | 18.9 ppb |
2014-11-04 | AB57961TH | 18.7 ppb |
2014-11-05 | AB58088TH | 20.3 ppb |
2014-11-05 | AB58086TH | 21.1 ppb |
2014-11-05 | AB58083TH | 20.7 ppb |
2015-02-03 | AB61381TH | 9.90 ppb |
2015-02-03 | AB61370TH | 9.05 ppb |
2015-02-03 | AB61371TH | 16.8 ppb |
2015-02-03 | AB61369TH | 9.49 ppb |
2015-02-03 | AB61372TH | 5.97 ppb |
2015-02-03 | AB61390TH | 16.3 ppb |
2015-02-03 | AB61388TH | 20.9 ppb |
2015-02-03 | AB61375TH | 9.29 ppb |
2015-02-03 | AB61380TH | 17.0 ppb |
2015-02-04 | AB61445TH | 17.6 ppb |
2015-02-04 | AB61443TH | 23.1 ppb |
2015-02-04 | AB61440TH | 20.4 ppb |
2015-05-04 | AB65005TH | 17.1 ppb |
2015-05-04 | AB65014TH | 18.7 ppb |
2015-05-04 | AB65018TH | 33.3 ppb |
2015-05-04 | AB65011TH | 23.0 ppb |
2015-05-04 | AB65019TH | 26.9 ppb |
2015-05-04 | AB65006TH | 20.6 ppb |
2015-05-05 | AB65089TH | 30.7 ppb |
2015-05-05 | AB65087TH | 30.2 ppb |
2015-05-05 | AB65124TH | 20.1 ppb |
2015-05-06 | AB65232TH | 21.7 ppb |
2015-05-06 | AB65230TH | 32.7 ppb |
2015-05-06 | AB65227TH | 30.9 ppb |
2015-08-03 | AB69217TH | 34.9 ppb |
2015-08-03 | AB69230TH | 27.1 ppb |
2015-08-03 | AB69234TH | 39.6 ppb |
2015-08-03 | AB69227TH | 34.8 ppb |
2015-08-03 | AB69235TH | 23.8 ppb |
2015-08-03 | AB69220TH | 52.8 ppb |
2015-08-04 | AB69339TH | 38.1 ppb |
2015-08-04 | AB69337TH | 28.7 ppb |
2015-08-04 | AB69352TH | 35.0 ppb |
2015-08-05 | AB69407TH | 31.0 ppb |
2015-08-05 | AB69405TH | 50.8 ppb |
2015-08-05 | AB69402TH | 32.7 ppb |
2015-11-02 | AB73148TH | 32.3 ppb |
2015-11-02 | AB73131TH | 31.8 ppb |
2015-11-02 | AB73135TH | 34.6 ppb |
2015-11-02 | AB73128TH | 35.5 ppb |
2015-11-02 | AB73136TH | 24.5 ppb |
2015-11-02 | AB73150TH | 29.8 ppb |
2015-11-03 | AB73218TH | 26.8 ppb |
2015-11-03 | AB73216TH | 10.4 ppb |
2015-11-03 | AB73196TH | 34.8 ppb |
2015-11-04 | AB73345TH | 28.5 ppb |
2015-11-04 | AB73343TH | 27.6 ppb |
2015-11-04 | AB73340TH | 28.8 ppb |
2016-02-01 | AB76572TH | 12.7 ppb |
2016-02-01 | AB76595TH | 11.9 ppb |
2016-02-01 | AB76599TH | 14.4 ppb |
2016-02-01 | AB76592TH | 15.6 ppb |
2016-02-01 | AB76600TH | 9.36 ppb |
2016-02-01 | AB76574TH | 19.6 ppb |
2016-02-02 | AB76669TH | 10.7 ppb |
2016-02-02 | AB76667TH | 12.0 ppb |
2016-02-02 | AB76689TH | 11.0 ppb |
2016-02-03 | AB76767TH | 11.0 ppb |
2016-02-03 | AB76765TH | 13.4 ppb |
2016-02-03 | AB76762TH | 10.4 ppb |
2016-05-02 | AB80560TH | 25.2 ppb |
2016-05-02 | AB80594TH | 18.1 ppb |
2016-05-02 | AB80598TH | 26.4 ppb |
2016-05-02 | AB80591TH | 22.8 ppb |
2016-05-02 | AB80599TH | 15.3 ppb |
2016-05-02 | AB80562TH | 20.0 ppb |
2016-05-03 | AB80692TH | 21.3 ppb |
2016-05-03 | AB80690TH | 20.9 ppb |
2016-05-03 | AB80723TH | 20.1 ppb |
2016-05-04 | AB80800TH | 18.9 ppb |
2016-05-04 | AB80798TH | 34.5 ppb |
2016-05-04 | AB80795TH | 20.8 ppb |
2016-08-01 | AB84594TH | 40.7 ppb |
2016-08-01 | AB84577TH | 25.8 ppb |
2016-08-01 | AB84581TH | 43.5 ppb |
2016-08-01 | AB84574TH | 45.1 ppb |
2016-08-01 | AB84582TH | 32.0 ppb |
2016-08-01 | AB84596TH | 29.5 ppb |
2016-08-02 | AB84697TH | 36.1 ppb |
2016-08-02 | AB84695TH | 39.1 ppb |
2016-08-02 | AB84730TH | 34.7 ppb |
2016-08-03 | AB84811TH | 34.4 ppb |
2016-08-03 | AB84809TH | 45.2 ppb |
2016-08-03 | AB84806TH | 35.7 ppb |
2016-11-01 | AB88703TH | 22.5 ppb |
2016-11-01 | AB88707TH | 24.2 ppb |
2016-11-01 | AB88701TH | 28.8 ppb |
2016-11-01 | AB88708TH | 37.0 ppb |
2016-11-01 | AB88683TH | 25.1 ppb |
2016-11-02 | AB88807TH | 30.1 ppb |
2016-11-02 | AB88809TH | 25.3 ppb |
2016-11-03 | AB88876TH | 25.5 ppb |
2016-11-03 | AB88891TH | 24.9 ppb |
2016-11-03 | AB88889TH | 23.7 ppb |
2016-11-03 | AB88874TH | 22.8 ppb |
2016-11-03 | AB88871TH | 26.1 ppb |
2017-02-01 | AB92248TH | 14.8 ppb |
2017-02-01 | AB92251TH | 13.1 ppb |
2017-02-01 | AB92245TH | 18.2 ppb |
2017-02-01 | AB92252TH | 10.6 ppb |
2017-02-01 | AB92228TH | 15.8 ppb |
2017-02-02 | AB92330TH | 17.6 ppb |
2017-02-02 | AB92333TH | 13.9 ppb |
2017-02-02 | AB92324TH | 9.25 ppb |
2017-02-02 | AB92323TH | 5.59 ppb |
2017-02-02 | AB92318TH | 24.0 ppb |
2017-02-02 | AB92332TH | 16.9 ppb |
2017-02-02 | AB92313TH | 24.6 ppb |
2017-05-01 | AB95849TH | 29.1 ppb |
2017-05-01 | AB95861TH | 19.2 ppb |
2017-05-01 | AB95865TH | 32.0 ppb |
2017-05-01 | AB95858TH | 31.1 ppb |
2017-05-01 | AB95866TH | 26.0 ppb |
2017-05-01 | AB95851TH | 19.7 ppb |
2017-05-02 | AB95936TH | 24.8 ppb |
2017-05-02 | AB95934TH | 30.3 ppb |
2017-05-02 | AB95943TH | 22.5 ppb |
2017-05-03 | AB96048TH | 19.9 ppb |
2017-05-03 | AB96046TH | 15.9 ppb |
2017-05-03 | AB96043TH | 16.1 ppb |
2017-08-01 | AB99490TH | 38.6 ppb |
2017-08-01 | AB99494TH | 41.9 ppb |
2017-08-01 | AB99487TH | 40.9 ppb |
2017-08-01 | AB99495TH | 26.0 ppb |
2017-08-01 | AB99515TH | 37.6 ppb |
2017-08-02 | AB99628TH | 39.2 ppb |
2017-08-02 | AB99630TH | 37.4 ppb |
2017-08-03 | AB99665TH | 36.6 ppb |
2017-08-03 | AB99689TH | 41.3 ppb |
2017-08-03 | AB99687TH | 39.3 ppb |
2017-08-03 | AB99663TH | 30.0 ppb |
2017-08-03 | AB99660TH | 41.8 ppb |
2017-11-01 | AC03297TH | 23.5 ppb |
2017-11-01 | AC03301TH | 25.9 ppb |
2017-11-01 | AC03295TH | 26.4 ppb |
2017-11-01 | AC03302TH | 19.3 ppb |
2017-11-01 | AC03311TH | 19.8 ppb |
2017-11-02 | AC03396TH | 26.6 ppb |
2017-11-02 | AC03398TH | 17.8 ppb |
2017-11-03 | AC03432TH | 23.3 ppb |
2017-11-03 | AC03436TH | 31.4 ppb |
2017-11-03 | AC03435TH | 27.7 ppb |
2017-11-03 | AC03431TH | 28.8 ppb |
2017-11-03 | AC03430TH | 23.2 ppb |
2018-02-01 | AC06820TH | 15.0 ppb |
2018-02-02 | AC06873TH | 20.9 ppb |
2018-02-02 | AC06866TH | 15.7 ppb |
2018-02-02 | AC06861TH | 14.6 ppb |
2018-02-02 | AC06867TH | 19.1 ppb |
2018-02-02 | AC06865TH | 26.3 ppb |
2018-02-02 | AC06868TH | 12.7 ppb |
2018-02-02 | AC06872TH | 21.8 ppb |
2018-02-02 | AC06871TH | 19.1 ppb |
2018-02-02 | AC06863TH | 16.1 ppb |
2018-02-02 | AC06862TH | 14.6 ppb |
2018-02-02 | AC06874TH | 17.1 ppb |
2018-05-01 | AC10241TH | 19.0 ppb |
2018-05-02 | AC10356TH | 21.9 ppb |
2018-05-02 | AC10360TH | 23.5 ppb |
2018-05-02 | AC10353TH | 31.6 ppb |
2018-05-02 | AC10361TH | 16.4 ppb |
2018-05-03 | AC10418TH | 29.4 ppb |
2018-05-03 | AC10446TH | 22.0 ppb |
2018-05-03 | AC10433TH | 29.4 ppb |
2018-05-03 | AC10431TH | 28.6 ppb |
2018-05-03 | AC10444TH | 36.7 ppb |
2018-05-03 | AC10441TH | 22.0 ppb |
2018-05-03 | AC10420TH | 27.2 ppb |
2018-08-01 | AC14128TH | 44.5 ppb |
2018-08-02 | AC14253TH | 31.5 ppb |
2018-08-02 | AC14257TH | 49.3 ppb |
2018-08-02 | AC14250TH | 51.5 ppb |
2018-08-02 | AC14258TH | 34.7 ppb |
2018-08-03 | AC14301TH | 51.1 ppb |
2018-08-03 | AC14312TH | 39.1 ppb |
2018-08-03 | AC14306TH | 48.0 ppb |
2018-08-03 | AC14305TH | 48.2 ppb |
2018-08-03 | AC14311TH | 39.1 ppb |
2018-08-03 | AC14310TH | 53.1 ppb |
2018-08-03 | AC14302TH | 34.8 ppb |
2018-11-01 | AC18178TH | 29.8 ppb |
2018-11-02 | AC18229TH | 31.7 ppb |
2018-11-02 | AC18233TH | 36.3 ppb |
2018-11-02 | AC18213TH | 25.9 ppb |
2018-11-02 | AC18234TH | 30.8 ppb |
2018-11-02 | AC18232TH | 40.9 ppb |
2018-11-02 | AC18235TH | 23.9 ppb |
2018-11-02 | AC18226TH | 26.2 ppb |
2018-11-02 | AC18225TH | 18.5 ppb |
2018-11-02 | AC18212TH | 27.9 ppb |
2018-11-02 | AC18211TH | 26.4 ppb |
2018-11-02 | AC18230TH | 30.9 ppb |
2019-02-01 | AC21945TH | 23.7 ppb |
2019-02-01 | AC21955TH | 16.9 ppb |
2019-02-01 | AC21951TH | 17.9 ppb |
2019-02-01 | AC21956TH | 16.0 ppb |
2019-02-01 | AC21954TH | 23.5 ppb |
2019-02-01 | AC21942TH | 23.2 ppb |
2019-02-01 | AC21941TH | 16.3 ppb |
2019-02-01 | AC21950TH | 33.6 ppb |
2019-02-01 | AC21949TH | 17.9 ppb |
2019-02-01 | AC21908TH | 21.7 ppb |
2019-02-01 | AC21946TH | 33.6 ppb |
2019-02-04 | AC22032TH | 11.5 ppb |
2019-05-01 | AC25788TH | 23.8 ppb |
2019-05-02 | AC25898TH | 25.1 ppb |
2019-05-02 | AC25902TH | 23.1 ppb |
2019-05-02 | AC25894TH | 22.6 ppb |
2019-05-03 | AC25938TH | 30.1 ppb |
2019-05-03 | AC25955TH | 23.7 ppb |
2019-05-03 | AC25958TH | 17.9 ppb |
2019-05-03 | AC25932TH | 32.1 ppb |
2019-05-03 | AC25931TH | 26.1 ppb |
2019-05-03 | AC25954TH | 34.4 ppb |
2019-05-03 | AC25953TH | 25.4 ppb |
2019-05-03 | AC25939TH | 28.9 ppb |
2019-08-01 | AC30045TH | 38.5 ppb |
2019-08-02 | AC30124TH | 41.3 ppb |
2019-08-02 | AC30086TH | 37.8 ppb |
2019-08-02 | AC30097TH | 40.3 ppb |
2019-08-02 | AC30087TH | 50.6 ppb |
2019-08-02 | AC30085TH | 47.7 ppb |
2019-08-02 | AC30088TH | 52.0 ppb |
2019-08-02 | AC30111TH | 61.6 ppb |
2019-08-02 | AC30110TH | 41.5 ppb |
2019-08-02 | AC30096TH | 41.6 ppb |
2019-08-02 | AC30095TH | 39.1 ppb |
2019-08-02 | AC30125TH | 37.9 ppb |
2019-11-01 | AC34519TH | 28.9 ppb |
2019-11-01 | AC34527TH | 18.7 ppb |
2019-11-01 | AC34513TH | 22.8 ppb |
2019-11-01 | AC34528TH | 28.7 ppb |
2019-11-01 | AC34526TH | 26.5 ppb |
2019-11-01 | AC34529TH | 14.4 ppb |
2019-11-01 | AC34491TH | 21.3 ppb |
2019-11-01 | AC34490TH | 12.9 ppb |
2019-11-01 | AC34512TH | 26.0 ppb |
2019-11-01 | AC34511TH | 24.8 ppb |
2019-11-01 | AC34477TH | 28.0 ppb |
2019-11-01 | AC34520TH | 21.9 ppb |