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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Carson, City of

NOTE: Carson, City of purchases water from Southwest Water Authority which is required to test for dibromochloromethane. Sample information shown below was taken by Southwest Water Authority.

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND50ND
2014ND10ND
2015ND80ND
2016ND10ND
2017ND10ND

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

NOTE: Carson, City of purchases water from Southwest Water Authority which is required to test for dibromochloromethane. Sample information shown below was taken by Southwest Water Authority.

Date Lab ID Result
2012-02-2712-S204ND
2012-05-2212-S612ND
2012-08-2012-S1484ND
2012-10-2312-S2267ND
2013-02-1913-S72ND
2013-05-2013-S596ND
2013-08-1313-S1684ND
2013-11-1913-S2649ND
2013-11-1913-S2648ND
2014-02-1814-S191ND
2014-02-1814-S190ND
2014-05-2014-S812ND
2014-05-2014-S811ND
2014-08-1814-S1972ND
2014-08-1814-S1971ND
2014-11-1814-S2785ND
2014-11-1814-S2784ND
2015-02-1715-S137ND
2015-02-1715-S136ND
2015-05-1915-S734ND
2015-05-1915-S735ND
2015-08-1715-S1668ND
2015-08-1715-S1667ND
2015-11-1615-S2454ND
2015-11-1615-S2453ND
2016-02-1716-S165ND
2016-02-1716-S166ND
2016-05-1716-S924ND
2016-05-1716-S925ND
2016-08-2316-S2185ND
2016-08-2316-S2186ND
2016-11-1416-S2762ND
2016-11-1416-S2761ND
2017-02-2217-S299ND
2017-02-2217-S298ND
2017-05-1517-S737ND
2017-05-1517-S738ND
2017-08-2217-S1760ND
2017-08-2217-S1761ND
2017-11-1317-S2400ND
2017-11-1417-S2401ND