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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Tract 180 Mutual Water Company

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

 

139

Samples

0

Samples exceeding legal limit (MCL)

90

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.62 ppb2419ND - 2.80 ppb
20152.56 ppb2016ND - 5.30 ppb
20161.19 ppb2316ND - 2.80 ppb
20171.33 ppb2416ND - 3.30 ppb
20180.554 ppb249ND - 2.30 ppb
20190.758 ppb2414ND - 1.90 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
2014-01-279588-004-1012ND
2014-02-053761-800-00002.30 ppb
2014-02-123761-801-10511.70 ppb
2014-02-123761-802-10291.80 ppb
2014-02-123761-803-10421.60 ppb
2014-02-213761-800-09352.60 ppb
2014-02-213761-801-10002.10 ppb
2014-02-213761-802-09272.70 ppb
2014-02-213761-803-09482.30 ppb
2014-04-159588-004-1035ND
2014-05-073761-800-09382.20 ppb
2014-05-073761-801-10521.30 ppb
2014-05-073761-802-09102.00 ppb
2014-05-073761-803-10061.50 ppb
2014-07-319588-004-1445ND
2014-08-063761-800-08431.70 ppb
2014-08-063761-801-0843ND
2014-08-063761-802-10091.60 ppb
2014-08-063761-803-09001.20 ppb
2014-09-249588-005-0940ND
2014-11-053761-800-09502.70 ppb
2014-11-053761-801-10532.40 ppb
2014-11-053761-802-09242.80 ppb
2014-11-053761-803-10112.40 ppb
2015-02-043761-800-10033.20 ppb
2015-02-043761-801-09002.70 ppb
2015-02-043761-802-09523.10 ppb
2015-02-043761-803-10182.70 ppb
2015-05-063761-800-08502.90 ppb
2015-05-063761-801-09382.10 ppb
2015-05-063761-802-08592.20 ppb
2015-05-063761-803-09182.00 ppb
2015-05-219588-004-0900ND
2015-08-053761-800-10052.30 ppb
2015-08-053761-801-09102.70 ppb
2015-08-053761-802-09563.10 ppb
2015-08-053761-803-09202.70 ppb
2015-08-079588-004-0949ND
2015-08-079588-005-0928ND
2015-10-299588-004-0942ND
2015-11-253761-800-10255.30 ppb
2015-11-253761-801-09194.80 ppb
2015-11-253761-802-10144.60 ppb
2015-11-253761-803-09484.70 ppb
2016-02-233761-800-12092.80 ppb
2016-02-233761-801-10522.00 ppb
2016-02-233761-802-11502.30 ppb
2016-02-233761-803-11281.90 ppb
2016-03-239588-004-0946ND
2016-05-103761-800-10002.20 ppb
2016-05-103761-801-11131.60 ppb
2016-05-103761-802-10101.90 ppb
2016-05-103761-803-11021.60 ppb
2016-06-209588-004-1005ND
2016-06-209588-005-0955ND
2016-07-199588-004-0958ND
2016-07-199588-005-0949ND
2016-08-233761-800-10192.10 ppb
2016-08-233761-801-09251.20 ppb
2016-08-233761-802-10001.40 ppb
2016-08-233761-803-09421.000 ppb
2016-10-109588-004-0913ND
2016-10-109588-005-0903ND
2016-11-153761-800-09001.40 ppb
2016-11-153761-801-09571.30 ppb
2016-11-153761-802-09151.40 ppb
2016-11-153761-803-09401.20 ppb
2017-01-179588-004-1006ND
2017-01-179588-005-0947ND
2017-02-083761-800-08252.50 ppb
2017-02-083761-801-09151.40 ppb
2017-02-083761-802-08371.90 ppb
2017-02-083761-803-09031.50 ppb
2017-04-289588-004-1010ND
2017-04-289588-005-0945ND
2017-05-023761-800-09311.70 ppb
2017-05-023761-801-09561.10 ppb
2017-05-023761-802-09441.50 ppb
2017-05-023761-803-10081.40 ppb
2017-07-109588-004-0943ND
2017-07-109588-005-0927ND
2017-08-153761-800-08402.50 ppb
2017-08-153761-801-09301.10 ppb
2017-08-153761-802-09421.70 ppb
2017-08-153761-803-09551.30 ppb
2017-10-069588-004-0924ND
2017-10-069588-005-0915ND
2017-11-073761-800-09303.20 ppb
2017-11-073761-801-10282.80 ppb
2017-11-073761-802-09452.90 ppb
2017-11-073761-803-10173.30 ppb
2018-01-169588-004-1008ND
2018-01-169588-005-0955ND
2018-02-073761-800-08001.40 ppb
2018-02-073761-801-09491.20 ppb
2018-02-073761-802-08221.20 ppb
2018-02-073761-803-0850ND
2018-04-199588-004-0959ND
2018-04-199588-005-0947ND
2018-05-083761-800-08142.30 ppb
2018-05-083761-801-09141.40 ppb
2018-05-083761-802-08261.80 ppb
2018-05-083761-803-09041.40 ppb
2018-07-249588-004-0955ND
2018-07-249588-005-0935ND
2018-08-073761-800-0830ND
2018-08-073761-801-0945ND
2018-08-073761-802-0900ND
2018-08-073761-803-0930ND
2018-10-169588-004-0954ND
2018-10-169588-005-0940ND
2018-11-063761-800-08451.40 ppb
2018-11-063761-801-0942ND
2018-11-063761-802-09041.20 ppb
2018-11-063761-803-0931ND
2019-01-249588-004-1010ND
2019-01-249588-005-1000ND
2019-02-123761-800-08201.60 ppb
2019-02-123761-801-09241.000 ppb
2019-02-123761-802-08401.10 ppb
2019-02-123761-803-09111.000 ppb
2019-05-149588-004-0905ND
2019-05-149588-005-0850ND
2019-05-143761-800-07381.000 ppb
2019-05-143761-801-0830ND
2019-05-143761-802-07511.000 ppb
2019-05-143761-803-08201.000 ppb
2019-08-063761-800-0828ND
2019-08-063761-801-09131.20 ppb
2019-08-063761-802-08421.20 ppb
2019-08-063761-803-09011.10 ppb
2019-08-239588-004-0950ND
2019-08-239588-005-0940ND
2019-10-289588-004-1010ND
2019-10-289588-005-0940ND
2019-11-123761-800-08101.60 ppb
2019-11-123761-801-09091.90 ppb
2019-11-123761-802-08331.70 ppb
2019-11-123761-803-08571.80 ppb