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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Hannibal

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

MORE ABOUT THIS CONTAMINANT

 

102

Samples

0

Samples exceeding legal limit (MCL)

97

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201410.8 ppb17171.02 ppb - 47.2 ppb
20158.38 ppb1716ND - 16.6 ppb
20161.17 ppb1713ND - 2.02 ppb
20173.54 ppb17171.21 ppb - 6.66 ppb
20182.50 ppb17170.890 ppb - 6.52 ppb
20191.95 ppb17170.780 ppb - 3.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-02-10AC1811125.2 ppb
2014-02-10AC1811047.2 ppb
2014-02-10AC1811223.3 ppb
2014-02-10AC1811329.4 ppb
2014-05-05AC231181.46 ppb
2014-05-05AC231191.08 ppb
2014-05-05AC231201.04 ppb
2014-05-05AC231211.02 ppb
2014-05-13AC239321.60 ppb
2014-08-19AC331548.68 ppb
2014-08-19AC331556.62 ppb
2014-08-19AC331566.32 ppb
2014-08-19AC331577.13 ppb
2014-11-05AC381646.48 ppb
2014-11-05AC381656.01 ppb
2014-11-05AC381664.79 ppb
2014-11-05AC381675.70 ppb
2015-02-09AC418904.80 ppb
2015-02-09AC418914.40 ppb
2015-02-09AC418924.14 ppb
2015-02-09AC418893.19 ppb
2015-05-07AC4647014.8 ppb
2015-05-07AC4646916.6 ppb
2015-05-07AC4646814.4 ppb
2015-05-07AC4646712.6 ppb
2015-05-11AC472691.24 ppb
2015-08-13AC5730915.3 ppb
2015-08-13AC5731114.4 ppb
2015-08-13AC5731014.9 ppb
2015-08-13AC5731215.6 ppb
2015-11-09AC627291.83 ppb
2015-11-09AC627302.03 ppb
2015-11-09AC62728ND
2015-11-09AC627272.24 ppb
2016-02-09AC662670.770 ppb
2016-02-09AC66268ND
2016-02-09AC66270ND
2016-02-09AC66269ND
2016-05-04AC719601.80 ppb
2016-05-04AC719620.910 ppb
2016-05-04AC719631.02 ppb
2016-05-04AC719610.940 ppb
2016-05-09AC72764ND
2016-09-12AC850641.74 ppb
2016-09-12AC850631.76 ppb
2016-09-12AC850621.87 ppb
2016-09-12AC850611.62 ppb
2016-11-07AC868621.84 ppb
2016-11-07AC868611.85 ppb
2016-11-07AC868602.02 ppb
2016-11-07AC868591.71 ppb
2017-02-07AC907241.61 ppb
2017-02-07AC907231.21 ppb
2017-02-07AC907251.66 ppb
2017-02-07AC907261.57 ppb
2017-05-02AC956934.02 ppb
2017-05-02AC956953.98 ppb
2017-05-02AC956943.93 ppb
2017-05-02AC956964.55 ppb
2017-05-24AC964983.80 ppb
2017-08-07AD032796.36 ppb
2017-08-07AD032786.35 ppb
2017-08-07AD032766.66 ppb
2017-08-07AD032775.58 ppb
2017-11-07AD094081.94 ppb
2017-11-07AD094091.92 ppb
2017-11-07AD094073.01 ppb
2017-11-14AD102562.04 ppb
2018-02-06AD141952.98 ppb
2018-02-06AD141963.67 ppb
2018-02-06AD141936.52 ppb
2018-02-06AD141942.56 ppb
2018-05-03AD204272.97 ppb
2018-05-03AD204282.63 ppb
2018-05-03AD204293.10 ppb
2018-05-03AD204302.70 ppb
2018-05-30AD206693.89 ppb
2018-08-02AD310961.85 ppb
2018-08-02AD310971.86 ppb
2018-08-02AD310981.93 ppb
2018-08-02AD310991.84 ppb
2018-11-07AD356401.12 ppb
2018-11-07AD356370.940 ppb
2018-11-07AD356380.890 ppb
2018-11-07AD356391.02 ppb
2019-02-05AD393052.28 ppb
2019-02-05AD393062.10 ppb
2019-02-05AD393073.00 ppb
2019-02-05AD393081.99 ppb
2019-05-03AD473862.32 ppb
2019-05-03AD473872.05 ppb
2019-05-03AD473881.90 ppb
2019-05-03AD473892.02 ppb
2019-05-07AD476401.36 ppb
2019-08-20AD538212.56 ppb
2019-08-20AD538222.70 ppb
2019-08-20AD538232.76 ppb
2019-08-20AD538242.53 ppb
2019-11-05AD580120.940 ppb
2019-11-05AD580130.980 ppb
2019-11-05AD580140.930 ppb
2019-11-05AD580150.780 ppb