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EWG's Tap Water Database — 2021 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.

 

480

Samples

0

Samples exceeding legal limit (MCL)

464

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
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
20184.16 ppb80801.90 ppb - 10.00 ppb
20194.48 ppb80802.10 ppb - 10.00 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
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
2018-02-0637302.30 ppb
2018-02-0637352.80 ppb
2018-02-0637482.10 ppb
2018-02-0637342.80 ppb
2018-02-0637442.70 ppb
2018-02-0637362.30 ppb
2018-02-0637382.20 ppb
2018-02-0637372.70 ppb
2018-02-0637332.50 ppb
2018-02-0637312.70 ppb
2018-02-0637322.70 ppb
2018-02-0637432.30 ppb
2018-02-0637472.70 ppb
2018-02-0637452.60 ppb
2018-02-0637282.30 ppb
2018-02-0637413.00 ppb
2018-02-0637392.20 ppb
2018-02-0637462.50 ppb
2018-02-0637291.90 ppb
2018-02-0637422.40 ppb
2018-05-01126034.40 ppb
2018-05-01126233.50 ppb
2018-05-01126224.60 ppb
2018-05-01126064.50 ppb
2018-05-01126165.20 ppb
2018-05-01126054.30 ppb
2018-05-01126085.20 ppb
2018-05-01126125.10 ppb
2018-05-01126104.50 ppb
2018-05-01126195.00 ppb
2018-05-01126173.50 ppb
2018-05-01126213.90 ppb
2018-05-01126134.70 ppb
2018-05-01126114.80 ppb
2018-05-01126095.20 ppb
2018-05-01126075.20 ppb
2018-05-01126043.10 ppb
2018-05-01126204.00 ppb
2018-05-01126143.50 ppb
2018-05-01126183.60 ppb
2018-08-07238384.50 ppb
2018-08-07238374.20 ppb
2018-08-07237145.20 ppb
2018-08-07237264.40 ppb
2018-08-07237155.80 ppb
2018-08-07237135.10 ppb
2018-08-07237124.40 ppb
2018-08-07237115.00 ppb
2018-08-07237167.70 ppb
2018-08-07237254.20 ppb
2018-08-07237194.70 ppb
2018-08-07238293.40 ppb
2018-08-07237104.60 ppb
2018-08-07238283.40 ppb
2018-08-07237204.00 ppb
2018-08-07238443.70 ppb
2018-08-07238473.50 ppb
2018-08-07238425.70 ppb
2018-08-07237178.50 ppb
2018-08-07237188.20 ppb
2018-11-073370310.00 ppb
2018-11-07337233.30 ppb
2018-11-07337434.20 ppb
2018-11-07337206.50 ppb
2018-11-07336873.00 ppb
2018-11-07337294.00 ppb
2018-11-07337004.30 ppb
2018-11-07337283.90 ppb
2018-11-07337064.80 ppb
2018-11-07337274.00 ppb
2018-11-07337223.20 ppb
2018-11-07337217.30 ppb
2018-11-07336803.80 ppb
2018-11-07336994.20 ppb
2018-11-07336974.60 ppb
2018-11-07337044.70 ppb
2018-11-07336823.90 ppb
2018-11-07336735.10 ppb
2018-11-07336633.70 ppb
2018-11-07337986.20 ppb
2019-02-0535752.40 ppb
2019-02-0536423.30 ppb
2019-02-0536434.60 ppb
2019-02-0535862.80 ppb
2019-02-0536482.50 ppb
2019-02-0536032.20 ppb
2019-02-0535794.20 ppb
2019-02-0536413.20 ppb
2019-02-0536252.80 ppb
2019-02-0536282.60 ppb
2019-02-0535652.10 ppb
2019-02-0535993.70 ppb
2019-02-0535804.50 ppb
2019-02-0536443.50 ppb
2019-02-0536272.40 ppb
2019-02-0535672.50 ppb
2019-02-0535742.40 ppb
2019-02-0535822.80 ppb
2019-02-0535762.80 ppb
2019-02-0535812.60 ppb
2019-05-07129102.20 ppb
2019-05-07129303.60 ppb
2019-05-07129415.30 ppb
2019-05-07129433.50 ppb
2019-05-07128972.90 ppb
2019-05-07128962.70 ppb
2019-05-07129405.20 ppb
2019-05-07129112.60 ppb
2019-05-07129343.20 ppb
2019-05-07129423.50 ppb
2019-05-07129013.80 ppb
2019-05-07129082.70 ppb
2019-05-07128982.90 ppb
2019-05-07129022.80 ppb
2019-05-07129462.80 ppb
2019-05-07129044.00 ppb
2019-05-07129036.50 ppb
2019-05-07129482.80 ppb
2019-05-07129572.90 ppb
2019-05-07129173.60 ppb
2019-08-06228255.60 ppb
2019-08-06228035.30 ppb
2019-08-06228236.30 ppb
2019-08-06228705.10 ppb
2019-08-06228666.10 ppb
2019-08-06228866.20 ppb
2019-08-06228735.50 ppb
2019-08-06228504.90 ppb
2019-08-06228656.50 ppb
2019-08-06228245.80 ppb
2019-08-06228175.30 ppb
2019-08-06228344.80 ppb
2019-08-06228645.60 ppb
2019-08-06228325.50 ppb
2019-08-06228225.30 ppb
2019-08-06228575.20 ppb
2019-08-06228055.30 ppb
2019-08-06228045.50 ppb
2019-08-06228636.30 ppb
2019-08-06228725.00 ppb
2019-11-06329716.70 ppb
2019-11-06329146.50 ppb
2019-11-06329234.00 ppb
2019-11-06329813.80 ppb
2019-11-06329054.50 ppb
2019-11-06329663.20 ppb
2019-11-06329223.60 ppb
2019-11-06329306.40 ppb
2019-11-06329139.70 ppb
2019-11-06329289.00 ppb
2019-11-06329784.10 ppb
2019-11-06329244.50 ppb
2019-11-06329278.70 ppb
2019-11-06329643.60 ppb
2019-11-06329855.60 ppb
2019-11-063291110.00 ppb
2019-11-06329803.00 ppb
2019-11-06329126.60 ppb
2019-11-06329377.40 ppb
2019-11-06329296.70 ppb