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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Town of Forest City

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

 

97

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.394 ppb165ND - 1.50 ppb
20150.356 ppb165ND - 1.20 ppb
20160.413 ppb165ND - 1.50 ppb
20170.206 ppb163ND - 1.20 ppb
20180.219 ppb163ND - 1.20 ppb
20190.600 ppb179ND - 1.40 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
2014-03-202995616ND
2014-03-202995617ND
2014-03-202995618ND
2014-03-202995619ND
2014-06-2330509461.10 ppb
2014-06-2330509481.20 ppb
2014-06-2330509501.50 ppb
2014-06-2330509441.40 ppb
2014-09-1731062461.10 ppb
2014-09-173106248ND
2014-09-173106250ND
2014-09-173106252ND
2014-12-163156854ND
2014-12-163156860ND
2014-12-163156858ND
2014-12-163156856ND
2015-03-18ND
2015-03-18ND
2015-03-18ND
2015-03-18ND
2015-06-161.20 ppb
2015-06-161.10 ppb
2015-06-161.10 ppb
2015-06-161.10 ppb
2015-09-281.20 ppb
2015-09-28ND
2015-09-28ND
2015-09-28ND
2015-12-15ND
2015-12-15ND
2015-12-15ND
2015-12-15ND
2016-03-153415092ND
2016-03-153415094ND
2016-03-153415090ND
2016-03-153415088ND
2016-06-213475783ND
2016-06-213475781ND
2016-06-213475779ND
2016-06-2134757771.10 ppb
2016-09-1935488221.20 ppb
2016-09-1935488241.40 ppb
2016-09-1935488261.50 ppb
2016-09-1935488281.40 ppb
2016-12-203608336ND
2016-12-203608338ND
2016-12-203608340ND
2016-12-203608342ND
2017-03-233660495ND
2017-03-233660489ND
2017-03-233660491ND
2017-03-233660493ND
2017-06-2037176251.20 ppb
2017-06-203717627ND
2017-06-2037176291.000 ppb
2017-06-2037176311.10 ppb
2017-09-193782245ND
2017-09-193782243ND
2017-09-193782241ND
2017-09-193782239ND
2017-12-213842966ND
2017-12-213842968ND
2017-12-213842970ND
2017-12-213842972ND
2018-03-223895988 ND
2018-03-223895986 ND
2018-03-223895984 ND
2018-03-223895982 ND
2018-06-193966677 ND
2018-06-193966671 1.20 ppb
2018-06-193966673 1.10 ppb
2018-06-193966675 1.20 ppb
2018-09-194061709 ND
2018-09-194061707 ND
2018-09-194061705 ND
2018-09-194061703 ND
2018-12-184154653 ND
2018-12-184154655 ND
2018-12-184154657 ND
2018-12-184154659 ND
2019-02-194203455 ND
2019-03-264238735 ND
2019-03-264238737 1.000 ppb
2019-03-264238739 ND
2019-03-264238741 1.10 ppb
2019-06-264337453 1.10 ppb
2019-06-264337459 1.10 ppb
2019-06-264337457 ND
2019-06-264337455 1.000 ppb
2019-09-174425180 ND
2019-09-174425184 1.40 ppb
2019-09-174425182 1.000 ppb
2019-09-174425178 1.30 ppb
2019-12-114511851 1.20 ppb
2019-12-114511849 ND
2019-12-114511847 ND
2019-12-114511845 ND