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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Parsons

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)

93

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.89 ppb16161.85 ppb - 4.80 ppb
20152.06 ppb16161.10 ppb - 3.30 ppb
20161.36 ppb16160.870 ppb - 2.30 ppb
20171.06 ppb1613ND - 3.00 ppb
20181.59 ppb16160.640 ppb - 2.10 ppb
20191.65 ppb16160.860 ppb - 2.20 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
2014-02-11608051.93 ppb
2014-02-11607981.85 ppb
2014-02-11607951.91 ppb
2014-02-11607922.02 ppb
2014-05-051099673.40 ppb
2014-05-051099663.20 ppb
2014-05-051099653.60 ppb
2014-05-051099462.70 ppb
2014-08-111715032.00 ppb
2014-08-181760942.50 ppb
2014-08-181760932.50 ppb
2014-08-181760952.30 ppb
2014-11-172333034.80 ppb
2014-11-172332983.80 ppb
2014-11-172332974.20 ppb
2014-11-172332963.60 ppb
2015-02-162802803.20 ppb
2015-02-162802783.10 ppb
2015-02-162802763.20 ppb
2015-02-162802693.30 ppb
2015-05-183347252.20 ppb
2015-05-183347261.70 ppb
2015-05-183347282.30 ppb
2015-05-183347272.00 ppb
2015-08-183902921.60 ppb
2015-08-183902911.60 ppb
2015-08-183902901.70 ppb
2015-08-183902891.50 ppb
2015-11-164281331.10 ppb
2015-11-164281321.50 ppb
2015-11-164281311.40 ppb
2015-11-164281301.60 ppb
2016-02-154937871.30 ppb
2016-02-154937861.30 ppb
2016-02-154937881.000 ppb
2016-02-154937891.20 ppb
2016-05-105448941.50 ppb
2016-05-105448931.70 ppb
2016-05-105448922.30 ppb
2016-05-105448912.10 ppb
2016-08-156039000.910 ppb
2016-08-156038991.30 ppb
2016-08-156038981.20 ppb
2016-08-156038971.20 ppb
2016-11-146597351.50 ppb
2016-11-146597380.870 ppb
2016-11-146597371.50 ppb
2016-11-146597360.950 ppb
2017-02-207115931.90 ppb
2017-02-207115923.00 ppb
2017-02-207115912.00 ppb
2017-02-207115902.80 ppb
2017-05-08756058ND
2017-05-087535690.640 ppb
2017-05-08753568ND
2017-05-087535670.570 ppb
2017-08-28829264ND
2017-08-288292630.780 ppb
2017-08-288292650.780 ppb
2017-08-288292660.650 ppb
2017-11-138779511.20 ppb
2017-11-138779500.710 ppb
2017-11-138779490.770 ppb
2017-11-138779481.20 ppb
2018-02-199083301.40 ppb
2018-02-199083291.90 ppb
2018-02-199083282.00 ppb
2018-02-199083271.40 ppb
2018-06-189904972.10 ppb
2018-06-189904980.970 ppb
2018-06-189905002.00 ppb
2018-06-189904991.90 ppb
2018-08-2010291081.60 ppb
2018-08-2010291071.90 ppb
2018-08-2010291061.40 ppb
2018-08-2010291050.640 ppb
2018-11-2610813651.50 ppb
2018-11-2610813641.90 ppb
2018-11-2610813631.80 ppb
2018-11-2610813621.10 ppb
2019-02-1811230121.50 ppb
2019-02-1811230111.90 ppb
2019-02-1811230131.60 ppb
2019-02-1811230141.20 ppb
2019-05-2011579171.70 ppb
2019-05-2011579162.20 ppb
2019-05-2011579151.10 ppb
2019-05-2011579142.10 ppb
2019-08-1912262330.910 ppb
2019-08-1912262321.70 ppb
2019-08-1912262311.80 ppb
2019-08-1912262300.860 ppb
2019-11-1912779402.20 ppb
2019-11-1912779442.00 ppb
2019-11-1912779431.90 ppb
2019-11-1912779421.70 ppb