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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Greater Johnstown Wa Riverside

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.313 ppb165ND - 1.40 ppb
20150.267 ppb162ND - 3.14 ppb
20160.206 ppb163ND - 1.15 ppb
20170.139 ppb164ND - 0.700 ppb
20180.144 ppb163ND - 0.900 ppb
20190.398 ppb166ND - 2.00 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
2014-01-1414012489-0041.000 ppb
2014-01-1414012489-001ND
2014-01-1414012489-002ND
2014-01-1414012489-003ND
2014-04-1514043288-001ND
2014-04-1514043288-0040.700 ppb
2014-04-1514043288-002ND
2014-04-1514043288-003ND
2014-07-1414072219-001ND
2014-07-1414072219-0040.900 ppb
2014-07-1414072219-003ND
2014-07-1414072219-002ND
2014-10-1314101212-0051.000 ppb
2014-10-1314101212-0071.40 ppb
2014-10-1314101212-003ND
2014-10-1314101212-001ND
2015-01-1412331630ND
2015-01-1412331625ND
2015-01-1412331615ND
2015-01-1412331620ND
2015-04-15126790651.13 ppb
2015-04-1512679060ND
2015-04-1512679050ND
2015-04-1512679055ND
2015-08-0513183474ND
2015-08-0513183479ND
2015-08-05131834843.14 ppb
2015-08-0513183469ND
2015-10-1413437838ND
2015-10-1413437833ND
2015-10-1413437843ND
2015-10-1413437828ND
2016-01-14138000791.12 ppb
2016-01-14138000731.03 ppb
2016-01-1413800067ND
2016-01-14138000851.15 ppb
2016-04-1314161791ND
2016-04-1314161782ND
2016-04-1314161794ND
2016-04-1314161787ND
2016-07-1314634373ND
2016-07-1314634371ND
2016-07-1314634374ND
2016-07-1314634372ND
2016-10-1215571408ND
2016-10-1215571402ND
2016-10-1215571396ND
2016-10-1215571390ND
2017-01-1615571507ND
2017-01-1615571513ND
2017-01-1615571501ND
2017-01-16155715190.310 ppb
2017-04-1715999795ND
2017-04-1715999800ND
2017-04-1715999790ND
2017-04-17159998050.600 ppb
2017-07-1716471594ND
2017-07-1716471589ND
2017-07-1716471584ND
2017-07-17164715990.700 ppb
2017-10-1616935575ND
2017-10-1616935570ND
2017-10-1616935566ND
2017-10-16169355800.610 ppb
2018-01-158010433-04ND
2018-01-158010433-03ND
2018-01-158010433-02ND
2018-01-158010433-01ND
2018-04-168040437-01ND
2018-04-168040437-03ND
2018-04-168040437-04ND
2018-04-168040437-02ND
2018-07-168070422-02ND
2018-07-168070422-03ND
2018-07-168070422-040.700 ppb
2018-07-168070422-01ND
2018-10-158100444-040.900 ppb
2018-10-158100444-02ND
2018-10-158100444-010.700 ppb
2018-10-158100444-03ND
2019-01-149010436-02ND
2019-01-149010436-04ND
2019-01-149010436-01ND
2019-01-149010436-03ND
2019-04-169040600-030.900 ppb
2019-04-169040600-042.00 ppb
2019-04-169040600-011.000 ppb
2019-04-169040600-021.000 ppb
2019-07-159070540-03ND
2019-07-159070540-01ND
2019-07-159070540-040.600 ppb
2019-07-159070540-02ND
2019-10-169J21084-040.870 ppb
2019-10-169J21084-03ND
2019-10-169J21084-02ND
2019-10-169J21084-01ND