EWG's Tap Water Database — 2019 UPDATE



Syracuse City

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
201217.8 ppb28285.40 ppb - 35.0 ppb
201317.6 ppb20205.70 ppb - 42.0 ppb
201421.2 ppb16169.00 ppb - 38.0 ppb
201522.5 ppb161611.0 ppb - 33.0 ppb
201623.0 ppb161612.0 ppb - 34.0 ppb
201725.4 ppb161612.0 ppb - 50.0 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
2012-02-161Q2012 COLEMAN F13.0 ppb
2012-02-161Q2012 WATER SHO10.00 ppb
2012-02-161Q2012 WESTCOTT5.40 ppb
2012-02-161Q2012 NOTTINGHA15.0 ppb
2012-05-082Q2012 CANON TRA17.0 ppb
2012-05-082Q2012 COLEMAN F17.0 ppb
2012-05-082Q2012 WOODLAND14.0 ppb
2012-05-082Q2012 MUZAK COR22.0 ppb
2012-05-082Q2012 MCCHESNEY25.0 ppb
2012-05-082Q2012 NOTTINGHA14.0 ppb
2012-05-082Q2012 WESTCOTT15.0 ppb
2012-05-082Q2012 WATER SHO17.0 ppb
2012-08-143Q2012 MCCHESNEY35.0 ppb
2012-08-143Q2012 NOTTINGHA22.0 ppb
2012-08-143Q2012 MUZAK COR31.0 ppb
2012-08-143Q2012 COLEMAN F29.0 ppb
2012-08-143Q2012 CANON TRA33.0 ppb
2012-08-143Q2012 WOODLAND29.0 ppb
2012-08-143Q2012 WESTCOTT15.0 ppb
2012-08-143Q2012 WATER SHO31.0 ppb
2012-11-134Q2012 WESTCOTT5.90 ppb
2012-11-134Q2012 MCCHESNEY15.0 ppb
2012-11-134Q2012 COLEMAN F11.0 ppb
2012-11-134Q2012 MUZAK COR15.0 ppb
2012-11-134Q2012 WOODLAND6.60 ppb
2012-11-134Q2012 WATER SHO12.0 ppb
2012-11-134Q2012 CANON TRA15.0 ppb
2012-11-134Q2012 NOTTINGHA8.50 ppb
2013-02-121Q2013 WATER SHO9.10 ppb
2013-02-121Q2013 WOODLAND7.20 ppb
2013-02-121Q2013 WESTCOTT5.70 ppb
2013-02-121Q2013 MCCHESNEY10.00 ppb
2013-02-121Q2013 CANON TRA10.00 ppb
2013-02-121Q2013 NOTTINGHA10.00 ppb
2013-02-121Q2013 COLEMAN F9.20 ppb
2013-02-121Q2013 MUZAK COR10.00 ppb
2013-05-142Q2013 COLEMAN F11.0 ppb
2013-05-142Q2013 MCCHESNEY14.0 ppb
2013-05-142Q2013 MUZAK COR17.0 ppb
2013-05-142Q2013 CANON TRA15.0 ppb
2013-08-133Q2013 MUZAK COR34.0 ppb
2013-08-133Q2013 MCCHESNEY38.0 ppb
2013-08-133Q2013 CANON TRA42.0 ppb
2013-08-133Q2013 COLEMAN F31.0 ppb
2013-11-134Q2013 MCCHESNEY19.0 ppb
2013-11-134Q2013 COLEMAN F18.0 ppb
2013-11-134Q2013 MUZAK COR20.0 ppb
2013-11-134Q2013 CANNON TR22.0 ppb
2014-02-111Q2014 COLEMAN F12.0 ppb
2014-02-111Q2014 MAMA NANC9.00 ppb
2014-02-111Q2014 MCCHESNEY9.20 ppb
2014-02-111Q2014 MUZAK COR12.0 ppb
2014-05-132Q2014 MCCHESNEY16.0 ppb
2014-05-132Q2014 MUZAK COR19.0 ppb
2014-05-132Q2014 COLEMAN F18.0 ppb
2014-05-132Q2014 CANNON TR15.0 ppb
2014-08-123Q2014 COLEMAN F34.0 ppb
2014-08-123Q2014 MCCHESNEY37.0 ppb
2014-08-123Q2014 MUZAK COR33.0 ppb
2014-08-123Q2014 MAMA NANC38.0 ppb
2014-11-124Q2014 MCCHESNEY22.0 ppb
2014-11-124Q2014 COLEMAN F22.0 ppb
2014-11-124Q2014 MAMA NANC22.0 ppb
2014-11-124Q2014 MUZAK COR21.0 ppb
2015-02-111Q2015 MUZAK COR17.0 ppb
2015-02-111Q2015 COLEMAN F13.0 ppb
2015-02-111Q2015 MCCHESNEY14.0 ppb
2015-02-111Q2015 MAMA NANC11.0 ppb
2015-05-132Q2015 MCCHESNEY19.0 ppb
2015-05-132Q2015 MUZAK COR30.0 ppb
2015-05-132Q2015 MAMA NANC16.0 ppb
2015-05-132Q2015 COLEMAN F22.0 ppb
2015-08-113Q2015 COLEMAN F32.0 ppb
2015-08-113Q2015 MUZAK COR33.0 ppb
2015-08-113Q2015 MCCHESNEY31.0 ppb
2015-08-113Q2015 MAMA NANC31.0 ppb
2015-11-094Q2015 COLEMAN F25.0 ppb
2015-11-094Q2015 MUZAK COR27.0 ppb
2015-11-094Q2015 MAMA NANC18.0 ppb
2015-11-094Q2015 MCCHESNEY21.0 ppb
2016-02-091Q2016 MUZAK COR13.0 ppb
2016-02-091Q2016 MAMA NANC12.0 ppb
2016-02-091Q2016 MCCHESNEY12.0 ppb
2016-02-091Q2016 COLEMAN F12.0 ppb
2016-05-102Q2016 MUZAK COR19.0 ppb
2016-05-102Q2016 MCCHESNEY16.0 ppb
2016-05-102Q2016 COLEMAN F17.0 ppb
2016-05-102Q2016 MAMA NANC18.0 ppb
2016-08-113Q2016 MAMA NANC34.0 ppb
2016-08-113Q2016 MUZAK COR33.0 ppb
2016-08-113Q2016 MCCHESNEY33.0 ppb
2016-08-113Q2016 COLEMAN F33.0 ppb
2016-11-164Q2016 MAMA NANC31.0 ppb
2016-11-164Q2016 MCCHESNEY31.0 ppb
2016-11-164Q2016 COLEMAN F28.0 ppb
2016-11-164Q2016 MUZAK COR26.0 ppb
2017-02-161Q2017 COLEMAN F16.0 ppb
2017-02-161Q2017 MUZAK COR14.0 ppb
2017-02-161Q2017 MAMA NANC12.0 ppb
2017-02-161Q2017 MCCHESNEY13.0 ppb
2017-05-102Q2017 MAMA NANC17.0 ppb
2017-05-102Q2017 COLEMAN F20.0 ppb
2017-05-102Q2017 MUZAK COR19.0 ppb
2017-05-102Q2017 MCCHESNEY18.0 ppb
2017-08-163Q2017 COLEMAN F38.0 ppb
2017-08-163Q2017 MUZAK COR42.0 ppb
2017-08-163Q2017 MCCHESNEY50.0 ppb
2017-08-163Q2017 MAMA NANC50.0 ppb
2017-11-154Q2017 COLEMAN F26.0 ppb
2017-11-154Q2017 MUZAK COR25.0 ppb
2017-11-154Q2017 MAMA NANC24.0 ppb
2017-11-154Q2017 MCCHESNEY22.0 ppb