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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Manhattan

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

81

Samples

0

Samples exceeding legal limit (MCL)

75

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.26 ppb1612ND - 2.90 ppb
20131.02 ppb15150.530 ppb - 1.60 ppb
20140.794 ppb1614ND - 1.60 ppb
20151.05 ppb16160.580 ppb - 2.10 ppb
20161.19 ppb16160.670 ppb - 1.90 ppb
20171.25 ppb221.000 ppb - 1.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2012-02-01573107TF1.80 ppb
2012-02-01573108TF2.00 ppb
2012-02-01573109TF1.90 ppb
2012-02-01573110TF2.20 ppb
2012-04-18577802TF2.10 ppb
2012-04-18577803TF2.90 ppb
2012-04-18577804TF2.60 ppb
2012-05-16578986TF1.20 ppb
2012-07-25582496TFND
2012-07-25582498TFND
2012-07-25582495TFND
2012-07-25582497TFND
2012-10-24587165TF1.000 ppb
2012-10-24587164TF0.750 ppb
2012-10-24587163TF0.830 ppb
2012-10-24587162TF0.920 ppb
2013-01-30591936TF1.10 ppb
2013-01-30591937TF1.60 ppb
2013-01-30591938TF1.30 ppb
2013-04-24595081TF0.790 ppb
2013-04-24595080TF0.800 ppb
2013-04-24595082TF0.990 ppb
2013-04-24595079TF0.920 ppb
2013-07-24599474TF0.530 ppb
2013-07-24599473TF0.730 ppb
2013-07-24599472TF0.680 ppb
2013-07-24599471TF0.630 ppb
2013-10-30605149TF1.40 ppb
2013-10-30605150TF1.20 ppb
2013-10-30605151TF1.40 ppb
2013-10-30605152TF1.30 ppb
2014-01-08318730.742 ppb
2014-01-08318760.848 ppb
2014-01-08318750.752 ppb
2014-01-08318740.784 ppb
2014-04-291042820.700 ppb
2014-04-291042780.550 ppb
2014-04-291042760.770 ppb
2014-04-291042710.530 ppb
2014-07-15152244ND
2014-07-15152245ND
2014-07-151522460.520 ppb
2014-07-151522470.600 ppb
2014-10-212176421.40 ppb
2014-10-212176401.30 ppb
2014-10-212176461.60 ppb
2014-10-212176441.60 ppb
2015-01-062588270.740 ppb
2015-01-062588290.610 ppb
2015-01-062588280.990 ppb
2015-01-062588260.650 ppb
2015-04-223172601.70 ppb
2015-04-223172612.10 ppb
2015-04-223172622.10 ppb
2015-04-223172591.90 ppb
2015-07-213710390.810 ppb
2015-07-213710380.690 ppb
2015-07-213710400.740 ppb
2015-07-213710370.580 ppb
2015-10-204189120.650 ppb
2015-10-204189110.690 ppb
2015-10-204189130.860 ppb
2015-10-204189141.000 ppb
2016-01-054700171.30 ppb
2016-01-054700141.20 ppb
2016-01-054700151.000 ppb
2016-01-054700160.930 ppb
2016-04-195313771.50 ppb
2016-04-195313781.80 ppb
2016-04-195313791.90 ppb
2016-04-195313801.10 ppb
2016-07-125820320.670 ppb
2016-07-125820330.840 ppb
2016-07-125820340.900 ppb
2016-07-125820310.900 ppb
2016-10-116421851.10 ppb
2016-10-116421861.20 ppb
2016-10-116421871.50 ppb
2016-10-116421841.20 ppb
2017-08-298301771.000 ppb
2017-08-298301761.50 ppb