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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

New York City System

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

 

483

Samples

0

Samples exceeding legal limit (MCL)

447

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.86 ppb83832.20 ppb - 5.40 ppb
20132.79 ppb8060ND - 5.10 ppb
20144.05 ppb80802.40 ppb - 6.10 ppb
20154.65 ppb80802.30 ppb - 9.80 ppb
20165.57 ppb80802.90 ppb - 10.00 ppb
20173.51 ppb8064ND - 6.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2012-02-0730124.10 ppb
2012-02-0730114.00 ppb
2012-02-0729992.20 ppb
2012-02-0730043.10 ppb
2012-02-0730013.60 ppb
2012-02-0730182.70 ppb
2012-02-0729954.20 ppb
2012-02-0730152.90 ppb
2012-02-0730134.10 ppb
2012-02-0730022.60 ppb
2012-02-0730173.70 ppb
2012-02-0730162.90 ppb
2012-02-0729964.30 ppb
2012-02-0729943.90 ppb
2012-02-0730032.90 ppb
2012-02-0730073.60 ppb
2012-02-0730053.90 ppb
2012-02-0730002.70 ppb
2012-02-0730083.50 ppb
2012-02-0730144.30 ppb
2012-02-0730093.80 ppb
2012-02-0729974.10 ppb
2012-02-0730104.00 ppb
2012-05-0198692.60 ppb
2012-05-0198673.60 ppb
2012-05-0198522.80 ppb
2012-05-0198643.50 ppb
2012-05-0198663.60 ppb
2012-05-0198503.20 ppb
2012-05-0198683.90 ppb
2012-05-0198603.70 ppb
2012-05-0198572.50 ppb
2012-05-0198533.20 ppb
2012-05-0198594.20 ppb
2012-05-0198653.90 ppb
2012-05-0198623.70 ppb
2012-05-0198553.90 ppb
2012-05-0198582.90 ppb
2012-05-0198614.50 ppb
2012-05-0198512.60 ppb
2012-05-0198632.90 ppb
2012-05-0198563.50 ppb
2012-05-0198543.40 ppb
2012-08-07183835.10 ppb
2012-08-07183814.10 ppb
2012-08-07183964.90 ppb
2012-08-07183924.30 ppb
2012-08-07183804.00 ppb
2012-08-07183905.10 ppb
2012-08-07183945.20 ppb
2012-08-07183934.40 ppb
2012-08-07183895.30 ppb
2012-08-07183864.70 ppb
2012-08-07183954.50 ppb
2012-08-07183794.40 ppb
2012-08-07183824.60 ppb
2012-08-07183845.30 ppb
2012-08-07183885.00 ppb
2012-08-07183913.50 ppb
2012-08-07183855.40 ppb
2012-08-07183874.80 ppb
2012-08-07183984.70 ppb
2012-08-07183975.40 ppb
2012-11-07264143.80 ppb
2012-11-07264113.80 ppb
2012-11-07264203.90 ppb
2012-11-07264103.50 ppb
2012-11-07264153.90 ppb
2012-11-07264263.40 ppb
2012-11-07264213.70 ppb
2012-11-07264183.50 ppb
2012-11-07264194.30 ppb
2012-11-07264173.80 ppb
2012-11-07264234.20 ppb
2012-11-07264123.80 ppb
2012-11-07264224.60 ppb
2012-11-07264083.60 ppb
2012-11-07264073.50 ppb
2012-11-07264163.50 ppb
2012-11-07264243.90 ppb
2012-11-07264254.50 ppb
2012-11-07264133.90 ppb
2012-11-07264093.50 ppb
2013-02-0529662.80 ppb
2013-02-0529713.10 ppb
2013-02-0529551.80 ppb
2013-02-0529682.90 ppb
2013-02-0529693.80 ppb
2013-02-0529572.10 ppb
2013-02-0529612.60 ppb
2013-02-0529732.10 ppb
2013-02-0529652.40 ppb
2013-02-0529542.30 ppb
2013-02-0529592.90 ppb
2013-02-0529603.10 ppb
2013-02-0529562.90 ppb
2013-02-0529702.90 ppb
2013-02-0529723.40 ppb
2013-02-0529622.40 ppb
2013-02-0529672.30 ppb
2013-02-0529632.60 ppb
2013-02-0529583.00 ppb
2013-02-0529642.70 ppb
2013-05-07105283.80 ppb
2013-05-07105933.90 ppb
2013-05-07105385.00 ppb
2013-05-07105394.70 ppb
2013-05-07105273.40 ppb
2013-05-07105314.70 ppb
2013-05-07105294.40 ppb
2013-05-07105944.40 ppb
2013-05-07105434.10 ppb
2013-05-07105344.60 ppb
2013-05-07105304.40 ppb
2013-05-07105324.90 ppb
2013-05-07105403.60 ppb
2013-05-07105463.50 ppb
2013-05-07105414.10 ppb
2013-05-07105454.80 ppb
2013-05-07105334.70 ppb
2013-05-07105354.50 ppb
2013-05-07105364.80 ppb
2013-05-07105424.50 ppb
2013-08-0618935ND
2013-08-0618930ND
2013-08-0618945ND
2013-08-0618932ND
2013-08-0618939ND
2013-08-0618933ND
2013-08-0618934ND
2013-08-0618949ND
2013-08-0618936ND
2013-08-0618948ND
2013-08-0618942ND
2013-08-0618943ND
2013-08-0618946ND
2013-08-0619004ND
2013-08-0618940ND
2013-08-0618931ND
2013-08-0618941ND
2013-08-0618938ND
2013-08-0618937ND
2013-08-0618944ND
2013-11-06271083.80 ppb
2013-11-06271614.40 ppb
2013-11-06271023.80 ppb
2013-11-06270974.50 ppb
2013-11-06271053.80 ppb
2013-11-06271105.10 ppb
2013-11-06271094.10 ppb
2013-11-06271004.10 ppb
2013-11-06271114.50 ppb
2013-11-06271044.70 ppb
2013-11-06271073.60 ppb
2013-11-06271143.60 ppb
2013-11-06271034.10 ppb
2013-11-06271064.40 ppb
2013-11-06270963.00 ppb
2013-11-06270953.70 ppb
2013-11-06270994.10 ppb
2013-11-06271014.50 ppb
2013-11-06271134.60 ppb
2013-11-06270984.20 ppb
2014-02-0427193.60 ppb
2014-02-0427253.10 ppb
2014-02-0427213.10 ppb
2014-02-0427324.10 ppb
2014-02-0427783.50 ppb
2014-02-0427273.20 ppb
2014-02-0427303.60 ppb
2014-02-0427233.60 ppb
2014-02-0427163.20 ppb
2014-02-0427203.60 ppb
2014-02-0427142.40 ppb
2014-02-0427263.40 ppb
2014-02-0427243.40 ppb
2014-02-0427223.10 ppb
2014-02-0427173.30 ppb
2014-02-0427333.00 ppb
2014-02-0427152.60 ppb
2014-02-0427294.20 ppb
2014-02-0427183.80 ppb
2014-02-0427283.50 ppb
2014-05-06102293.80 ppb
2014-05-06102274.10 ppb
2014-05-06102404.10 ppb
2014-05-06102223.80 ppb
2014-05-06102383.90 ppb
2014-05-06102243.90 ppb
2014-05-06102343.80 ppb
2014-05-06102353.50 ppb
2014-05-06102394.20 ppb
2014-05-06102374.10 ppb
2014-05-06102324.10 ppb
2014-05-06102334.10 ppb
2014-05-06102313.60 ppb
2014-05-06102253.40 ppb
2014-05-06102233.10 ppb
2014-05-06102264.40 ppb
2014-05-06102303.60 ppb
2014-05-06102413.20 ppb
2014-05-06102284.20 ppb
2014-05-06102364.00 ppb
2014-08-05183935.80 ppb
2014-08-05183875.30 ppb
2014-08-05183864.50 ppb
2014-08-05183926.00 ppb
2014-08-05183994.90 ppb
2014-08-05183946.10 ppb
2014-08-05183985.30 ppb
2014-08-05184005.30 ppb
2014-08-05183895.70 ppb
2014-08-05183885.50 ppb
2014-08-05183905.60 ppb
2014-08-05184024.50 ppb
2014-08-05183835.30 ppb
2014-08-05183975.20 ppb
2014-08-05184015.40 ppb
2014-08-05183855.00 ppb
2014-08-05183915.60 ppb
2014-08-05183954.80 ppb
2014-08-05183964.80 ppb
2014-08-05183844.20 ppb
2014-11-05262273.70 ppb
2014-11-05262254.10 ppb
2014-11-05262333.90 ppb
2014-11-05262343.90 ppb
2014-11-05262293.90 ppb
2014-11-05262313.40 ppb
2014-11-05262192.80 ppb
2014-11-05262363.90 ppb
2014-11-05262204.00 ppb
2014-11-05262263.80 ppb
2014-11-05262243.90 ppb
2014-11-05262213.40 ppb
2014-11-05262354.00 ppb
2014-11-05262183.30 ppb
2014-11-05262234.10 ppb
2014-11-05262323.60 ppb
2014-11-05262373.60 ppb
2014-11-05262283.80 ppb
2014-11-05262224.10 ppb
2014-11-05262303.70 ppb
2015-02-0427402.50 ppb
2015-02-0427512.60 ppb
2015-02-0427452.60 ppb
2015-02-0427502.60 ppb
2015-02-0427553.10 ppb
2015-02-0427422.50 ppb
2015-02-0427482.60 ppb
2015-02-0427583.20 ppb
2015-02-0427532.70 ppb
2015-02-0427432.70 ppb
2015-02-0427492.70 ppb
2015-02-0427572.90 ppb
2015-02-0427592.50 ppb
2015-02-0427522.40 ppb
2015-02-0427412.30 ppb
2015-02-0427443.10 ppb
2015-02-0427562.80 ppb
2015-02-0428222.60 ppb
2015-02-0427472.80 ppb
2015-02-0427462.70 ppb
2015-05-05102343.60 ppb
2015-05-05102293.80 ppb
2015-05-05102273.80 ppb
2015-05-05102194.80 ppb
2015-05-05102224.90 ppb
2015-05-05102164.60 ppb
2015-05-05102244.00 ppb
2015-05-05102314.10 ppb
2015-05-05102204.80 ppb
2015-05-05102215.10 ppb
2015-05-05102185.00 ppb
2015-05-05102283.80 ppb
2015-05-05102234.00 ppb
2015-05-05102334.50 ppb
2015-05-05102253.60 ppb
2015-05-05102133.90 ppb
2015-05-05102324.20 ppb
2015-05-05102304.60 ppb
2015-05-05102143.30 ppb
2015-05-05102174.40 ppb
2015-08-04188726.00 ppb
2015-08-04188805.90 ppb
2015-08-04188815.80 ppb
2015-08-04188825.20 ppb
2015-08-04188668.40 ppb
2015-08-04188735.40 ppb
2015-08-04188786.10 ppb
2015-08-04188765.40 ppb
2015-08-04188645.20 ppb
2015-08-04188795.40 ppb
2015-08-04188625.50 ppb
2015-08-04188675.40 ppb
2015-08-04188715.10 ppb
2015-08-04188687.60 ppb
2015-08-04188655.80 ppb
2015-08-04188698.70 ppb
2015-08-04188774.40 ppb
2015-08-04188753.90 ppb
2015-08-04188708.40 ppb
2015-08-04188637.60 ppb
2015-11-04277663.90 ppb
2015-11-04277595.10 ppb
2015-11-04277074.40 ppb
2015-11-04277484.60 ppb
2015-11-04277925.40 ppb
2015-11-04277935.10 ppb
2015-11-04277684.40 ppb
2015-11-04277735.10 ppb
2015-11-04277585.90 ppb
2015-11-04276974.30 ppb
2015-11-04277575.40 ppb
2015-11-04277504.30 ppb
2015-11-04277896.60 ppb
2015-11-04277568.60 ppb
2015-11-04277754.70 ppb
2015-11-04277919.80 ppb
2015-11-04277744.60 ppb
2015-11-04277514.80 ppb
2015-11-04277909.70 ppb
2015-11-04277115.40 ppb
2016-02-02359443.30 ppb
2016-02-02359554.60 ppb
2016-02-02359454.30 ppb
2016-02-02359563.20 ppb
2016-02-02359613.60 ppb
2016-02-02359603.20 ppb
2016-02-02359507.10 ppb
2016-02-02359474.00 ppb
2016-02-02359573.00 ppb
2016-02-02359593.20 ppb
2016-02-02359497.20 ppb
2016-02-02359485.20 ppb
2016-02-02359622.90 ppb
2016-02-02359583.00 ppb
2016-02-02359524.30 ppb
2016-02-02359435.20 ppb
2016-02-02359514.30 ppb
2016-02-02359468.00 ppb
2016-02-02359423.90 ppb
2016-02-02359534.20 ppb
2016-05-03451285.20 ppb
2016-05-03451246.20 ppb
2016-05-03451364.20 ppb
2016-05-03451275.80 ppb
2016-05-03451235.90 ppb
2016-05-03451214.70 ppb
2016-05-03451267.00 ppb
2016-05-03451204.40 ppb
2016-05-03451383.80 ppb
2016-05-03451256.80 ppb
2016-05-03451354.50 ppb
2016-05-03451333.90 ppb
2016-05-03451344.20 ppb
2016-05-03451316.00 ppb
2016-05-03451196.00 ppb
2016-05-03451294.90 ppb
2016-05-03451226.80 ppb
2016-05-03451374.40 ppb
2016-05-03451185.10 ppb
2016-05-18466154.50 ppb
2016-08-09556738.10 ppb
2016-08-09556706.30 ppb
2016-08-09556806.50 ppb
2016-08-09556776.30 ppb
2016-08-09556786.20 ppb
2016-08-09556765.90 ppb
2016-08-09558025.70 ppb
2016-08-09556725.50 ppb
2016-08-09556836.00 ppb
2016-08-095567410.00 ppb
2016-08-09556825.30 ppb
2016-08-09556867.00 ppb
2016-08-09556886.20 ppb
2016-08-09556719.50 ppb
2016-08-09556815.50 ppb
2016-08-09556875.40 ppb
2016-08-09556696.10 ppb
2016-08-095567510.00 ppb
2016-08-09556846.20 ppb
2016-08-09556688.30 ppb
2016-11-01644626.20 ppb
2016-11-01644745.70 ppb
2016-11-01644649.30 ppb
2016-11-01644666.90 ppb
2016-11-01644715.50 ppb
2016-11-01644765.20 ppb
2016-11-01644784.00 ppb
2016-11-01644685.10 ppb
2016-11-01644605.50 ppb
2016-11-01644636.80 ppb
2016-11-01644725.00 ppb
2016-11-01644615.70 ppb
2016-11-01644676.00 ppb
2016-11-01644585.20 ppb
2016-11-01644735.40 ppb
2016-11-01644695.20 ppb
2016-11-01644775.50 ppb
2016-11-01644656.70 ppb
2016-11-01644597.30 ppb
2016-11-01644755.60 ppb
2017-02-0737155.70 ppb
2017-02-0737144.70 ppb
2017-02-0737123.60 ppb
2017-02-0737165.90 ppb
2017-02-0737205.70 ppb
2017-02-0737242.80 ppb
2017-02-0737226.30 ppb
2017-02-0737195.00 ppb
2017-02-0737094.00 ppb
2017-02-0737136.40 ppb
2017-02-0737176.10 ppb
2017-02-0737113.10 ppb
2017-02-0737185.20 ppb
2017-02-0737105.90 ppb
2017-02-0737292.70 ppb
2017-02-0737253.00 ppb
2017-02-0737283.30 ppb
2017-02-0737233.10 ppb
2017-02-0737273.00 ppb
2017-02-0737262.90 ppb
2017-05-02117463.60 ppb
2017-05-02117495.60 ppb
2017-05-02117563.00 ppb
2017-05-02117374.90 ppb
2017-05-02117552.90 ppb
2017-05-02117542.70 ppb
2017-05-02117454.80 ppb
2017-05-02117405.50 ppb
2017-05-02117384.40 ppb
2017-05-02117473.00 ppb
2017-05-02117426.50 ppb
2017-05-02117513.00 ppb
2017-05-02117503.40 ppb
2017-05-02117533.50 ppb
2017-05-02117523.20 ppb
2017-05-02117415.60 ppb
2017-05-02117435.50 ppb
2017-05-02117364.60 ppb
2017-05-02117445.50 ppb
2017-05-02117395.50 ppb
2017-08-0121319ND
2017-08-01213214.40 ppb
2017-08-0121348ND
2017-08-0121296ND
2017-08-0121309ND
2017-08-0121310ND
2017-08-0121326ND
2017-08-0121311ND
2017-08-01213284.05 ppb
2017-08-01213994.40 ppb
2017-08-0121346ND
2017-08-0121298ND
2017-08-0121290ND
2017-08-0121276ND
2017-08-0121340ND
2017-08-0121312ND
2017-08-01213274.60 ppb
2017-08-0121347ND
2017-08-0121286ND
2017-08-0121349ND
2017-11-08318454.00 ppb
2017-11-08318314.10 ppb
2017-11-08318415.00 ppb
2017-11-08318354.60 ppb
2017-11-08318393.70 ppb
2017-11-08318325.20 ppb
2017-11-08318384.20 ppb
2017-11-08318334.70 ppb
2017-11-08318293.80 ppb
2017-11-08318464.30 ppb
2017-11-08318344.70 ppb
2017-11-08318444.90 ppb
2017-11-08318283.90 ppb
2017-11-08318364.80 ppb
2017-11-08318423.80 ppb
2017-11-08318484.10 ppb
2017-11-08318304.50 ppb
2017-11-08318433.90 ppb
2017-11-08318475.30 ppb
2017-11-08318375.00 ppb