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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Warren County Water System

NOTE: Warren County Water System purchases water from Warrenton which is required to test for dibromochloromethane. Sample information shown below was taken by Warrenton.

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.

 

66

Samples

0

Samples exceeding legal limit (MCL)

49

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20124.38 ppb17172.00 ppb - 6.80 ppb
20131.48 ppb43ND - 2.60 ppb
20141.53 ppb86ND - 2.70 ppb
20152.34 ppb881.000 ppb - 4.60 ppb
20161.34 ppb84ND - 3.50 ppb
20171.28 ppb86ND - 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

NOTE: Warren County Water System purchases water from Warrenton which is required to test for dibromochloromethane. Sample information shown below was taken by Warrenton.

Date Lab ID Result
2012-02-07AH528122.90 ppb
2012-02-07AH528112.00 ppb
2012-02-07AH528102.10 ppb
2012-02-07AH528092.50 ppb
2012-05-16AH648022.40 ppb
2012-06-25AH679675.00 ppb
2012-06-25AH679684.40 ppb
2012-06-25AH679694.20 ppb
2012-06-25AH679705.90 ppb
2012-08-20AH750766.80 ppb
2012-08-20AH750755.60 ppb
2012-08-20AH750745.30 ppb
2012-08-20AH750736.20 ppb
2012-11-12AH838795.10 ppb
2012-11-12AH838804.00 ppb
2012-11-12AH838814.00 ppb
2012-11-12AH838826.00 ppb
2013-02-20AH895733.50 ppb
2013-02-20AH895743.20 ppb
2013-02-20AH895752.80 ppb
2013-02-20AH895766.30 ppb
2013-05-14AI015261.40 ppb
2013-05-14AI01525ND
2013-05-14AI01524ND
2013-05-14AI01523ND
2013-06-24AI044350.610 ppb
2013-09-18AI161471.40 ppb
2013-09-18AI161461.30 ppb
2013-12-17AI250711.60 ppb
2013-12-17AI250701.70 ppb
2014-03-19AI36305ND
2014-03-19AI36304ND
2014-05-21AI411861.10 ppb
2014-06-17AI434401.50 ppb
2014-06-17AI434391.40 ppb
2014-09-23AI549931.60 ppb
2014-09-23AI549922.20 ppb
2014-12-16AI616821.50 ppb
2014-12-16AI616811.90 ppb
2015-03-18AI69380ND
2015-03-18AI69381ND
2015-04-08AI743330.610 ppb
2015-06-16AI799361.30 ppb
2015-06-16AI79935ND
2015-09-23AI906903.00 ppb
2015-09-23AI906892.90 ppb
2015-12-15AJ029691.30 ppb
2015-12-15AJ029681.30 ppb
2016-03-22AJ08566ND
2016-03-22AJ08567ND
2016-05-23AJ12710ND
2016-06-22AJ15012ND
2016-06-22AJ150111.20 ppb
2016-09-19AJ278221.50 ppb
2016-09-19AJ278211.90 ppb
2016-12-07AJ363141.50 ppb
2016-12-07AJ363131.80 ppb
2017-03-20AJ48395ND
2017-03-20AJ48396ND
2017-06-12AJ572841.20 ppb
2017-06-12AJ57274ND
2017-06-12AJ572731.60 ppb
2017-09-20AJ68715ND
2017-09-20AJ687141.20 ppb
2017-12-11AJ75253ND
2017-12-11AJ752521.50 ppb