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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Highland S & W Authority Beaverdam

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)

65

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.14 ppb16160.700 ppb - 1.60 ppb
20150.685 ppb169ND - 1.44 ppb
20160.273 ppb164ND - 1.24 ppb
20170.647 ppb16160.440 ppb - 0.900 ppb
20180.444 ppb168ND - 1.000 ppb
20190.741 ppb1612ND - 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
2014-01-15OAKLAND HYDR1.10 ppb
2014-01-15MINE 42 HYDR1.20 ppb
2014-01-15GRAMBLINGTOW1.10 ppb
2014-01-15WILMORE HYDR1.10 ppb
2014-04-1414043277-0010.800 ppb
2014-04-1414043277-0040.700 ppb
2014-04-1414043277-0020.700 ppb
2014-05-0514051332-0011.000 ppb
2014-07-1414072097-0011.30 ppb
2014-07-1414072097-0041.10 ppb
2014-07-1414072097-0031.30 ppb
2014-07-1414072097-0020.900 ppb
2014-10-1314101211-0051.50 ppb
2014-10-1314101211-0071.50 ppb
2014-10-1314101211-0031.40 ppb
2014-10-1314101211-0011.60 ppb
2015-01-1412331316ND
2015-01-14123313111.09 ppb
2015-01-14123313011.18 ppb
2015-01-14123313061.09 ppb
2015-04-15126787581.44 ppb
2015-04-15126787531.10 ppb
2015-04-15126787431.42 ppb
2015-04-15126787481.27 ppb
2015-07-1513060307ND
2015-07-1513060312ND
2015-07-1513060317ND
2015-07-1513060302ND
2015-10-14134375021.20 ppb
2015-10-1413437497ND
2015-10-1413437507ND
2015-10-14134374921.17 ppb
2016-01-1313799575ND
2016-01-1313799570ND
2016-01-13137995651.03 ppb
2016-01-1313799580ND
2016-04-1314161361ND
2016-04-1314161355ND
2016-04-1314161367ND
2016-04-1314161363ND
2016-07-1314633757ND
2016-07-13146337591.000 ppb
2016-07-1314633758ND
2016-07-1314633756ND
2016-10-1215136204ND
2016-10-12151362051.09 ppb
2016-10-1215136203ND
2016-10-12151362061.24 ppb
2017-01-16155708890.440 ppb
2017-01-16155708950.550 ppb
2017-01-16155708830.610 ppb
2017-01-16155709010.520 ppb
2017-04-17159992820.600 ppb
2017-04-17159992870.600 ppb
2017-04-17159992770.600 ppb
2017-04-17159992920.600 ppb
2017-07-17164710500.900 ppb
2017-07-17164710450.800 ppb
2017-07-17164710400.900 ppb
2017-07-17164710550.800 ppb
2017-10-16169349870.590 ppb
2017-10-16169349840.570 ppb
2017-10-16169349780.700 ppb
2017-10-16169349940.570 ppb
2018-01-158010430-04ND
2018-01-158010430-03ND
2018-01-158010430-02ND
2018-01-158010430-01ND
2018-04-168040457-01ND
2018-04-168040457-03ND
2018-04-168040457-04ND
2018-04-168040457-02ND
2018-07-168070487-020.900 ppb
2018-07-168070487-030.700 ppb
2018-07-168070487-040.800 ppb
2018-07-168070487-010.700 ppb
2018-10-158100447-041.000 ppb
2018-10-158100447-021.000 ppb
2018-10-158100447-011.000 ppb
2018-10-158100447-031.000 ppb
2019-01-149010437-02ND
2019-01-149010437-04ND
2019-01-149010437-01ND
2019-01-149010437-03ND
2019-04-159040539-031.000 ppb
2019-04-159040539-041.000 ppb
2019-04-159040539-012.00 ppb
2019-04-159040539-021.000 ppb
2019-07-109070382-030.800 ppb
2019-07-109070382-010.700 ppb
2019-07-109070382-040.600 ppb
2019-07-109070382-020.700 ppb
2019-10-169J18097-041.18 ppb
2019-10-169J18097-030.950 ppb
2019-10-169J18097-020.930 ppb
2019-10-169J18097-011.000 ppb