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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

CTWC - Naugatuck Region-Central System

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

 

116

Samples

0

Samples exceeding legal limit (MCL)

102

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.88 ppb2016ND - 3.60 ppb
20151.75 ppb2017ND - 2.90 ppb
20161.75 ppb2018ND - 2.90 ppb
20171.47 ppb1917ND - 2.80 ppb
20181.38 ppb2017ND - 2.70 ppb
20192.44 ppb17170.700 ppb - 3.60 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
2014-02-252226THM1.40 ppb
2014-02-252227THM2.00 ppb
2014-02-252228THM2.00 ppb
2014-03-04BG14936VOC11.000 ppb
2014-03-06BG16206VOC1ND
2014-03-06BG16207VOC1ND
2014-04-29BG38084VOC1ND
2014-05-287179THM1.90 ppb
2014-05-287180THM2.90 ppb
2014-05-287181THM2.70 ppb
2014-05-287182THM2.80 ppb
2014-07-28BG82699VOC1ND
2014-08-26BG99593TTHM2.40 ppb
2014-08-26BG99594TTHM3.20 ppb
2014-08-26BG99595TTHM3.10 ppb
2014-08-26BG99596TTHM3.60 ppb
2014-11-24BH45201TTHM1.50 ppb
2014-11-24BH45202TTHM2.40 ppb
2014-11-24BH45203TTHM2.30 ppb
2014-11-24BH45204TTHM2.40 ppb
2015-02-17BH74013VOC10.870 ppb
2015-02-27BH78480TTHM1.90 ppb
2015-02-27BH78479TTHM1.60 ppb
2015-02-27BH78481TTHM1.70 ppb
2015-02-27BH78478TTHM1.40 ppb
2015-03-16BH83835VOC1ND
2015-03-16BH83838VOC1ND
2015-05-26BJ21443TTHM2.20 ppb
2015-05-26BJ21442TTHM1.60 ppb
2015-05-26BJ21444TTHM2.30 ppb
2015-05-26BJ21445TTHM2.20 ppb
2015-08-18BJ76634TTHM2.80 ppb
2015-08-18BJ76633TTHM2.10 ppb
2015-08-18BJ76635TTHM2.50 ppb
2015-08-18BJ76636TTHM2.90 ppb
2015-11-09BK20857TTHM2.40 ppb
2015-11-09BK20856TTHM1.60 ppb
2015-11-09BK20858TTHM2.30 ppb
2015-11-09BK20859TTHM2.60 ppb
2015-11-11BK21527VOC1ND
2016-01-19BK54678VOC10.790 ppb
2016-02-09BK63010TTHM0.970 ppb
2016-02-09BK63011TTHM1.60 ppb
2016-02-09BK63012TTHM1.20 ppb
2016-02-09BK63013TTHM1.70 ppb
2016-03-09BK76130VOC1ND
2016-04-12BN12472VOC1ND
2016-05-17BN33271TTHM1.20 ppb
2016-05-17BN33272TTHM1.60 ppb
2016-05-17BN33273TTHM1.60 ppb
2016-05-17BN33274TTHM1.70 ppb
2016-08-16BN92714TTHM2.50 ppb
2016-08-16BN92715TTHM2.90 ppb
2016-08-16BN92716TTHM2.80 ppb
2016-08-16BN92717TTHM2.90 ppb
2016-11-14BV85888VOC11.40 ppb
2016-11-15BV83243TTHM1.90 ppb
2016-11-15BV83244TTHM2.50 ppb
2016-11-15BV83245TTHM2.80 ppb
2016-11-15BV83246TTHM2.90 ppb
2017-01-11BX19357VOC11.30 ppb
2017-01-17BX30447VOC1ND
2017-02-14BX61009TTHM1.20 ppb
2017-02-14BX61010TTHM1.60 ppb
2017-02-14BX61011TTHM1.50 ppb
2017-02-14BX61012TTHM1.50 ppb
2017-05-16BY21158TTHM0.900 ppb
2017-05-16BY21159TTHM0.980 ppb
2017-05-16BY21160TTHM1.20 ppb
2017-05-16BY21161TTHM1.40 ppb
2017-05-23BY28091VOC1ND
2017-08-22BY88369TTHM2.30 ppb
2017-08-22BY88370TTHM2.80 ppb
2017-08-22BY88371TTHM2.60 ppb
2017-08-22BY88372TTHM2.60 ppb
2017-11-20BZ44480TTHM0.970 ppb
2017-11-20BZ44481TTHM1.70 ppb
2017-11-20BZ44482TTHM1.50 ppb
2017-11-20BZ44483TTHM1.80 ppb
2018-01-15BZ72858VOC10.750 ppb
2018-02-13BZ88506VOC1ND
2018-02-14BZ89697TTHM1.10 ppb
2018-02-14BZ89698TTHM1.20 ppb
2018-02-14BZ89699TTHM1.30 ppb
2018-02-14BZ89700TTHM1.40 ppb
2018-05-21CA50437TTHM1.30 ppb
2018-05-21CA50438TTHM0.950 ppb
2018-05-21CA50439TTHM1.30 ppb
2018-05-21CA50440TTHM1.30 ppb
2018-05-21CA50441VOC1ND
2018-06-11CA67845VOC1ND
2018-08-20CB149391.70 ppb
2018-08-20CB149402.00 ppb
2018-08-20CB149411.80 ppb
2018-08-20CB149421.90 ppb
2018-11-20DBP 2005135022.70 ppb
2018-11-20DBP 2005135042.40 ppb
2018-11-20DBP 2005135061.80 ppb
2018-11-20DBP 2005135342.60 ppb
2019-02-12VOC1 2005213780.700 ppb
2019-02-20DBP 2005224471.40 ppb
2019-02-20DBP 2005224481.50 ppb
2019-02-20DBP 2005224491.60 ppb
2019-02-20DBP 2005224501.30 ppb
2019-05-21DBP 2005332572.70 ppb
2019-05-21DBP 2005332582.50 ppb
2019-05-21DBP 2005332593.00 ppb
2019-05-21DBP 2005332601.90 ppb
2019-08-20DBP 2005458903.30 ppb
2019-08-20DBP 2005458913.40 ppb
2019-08-20DBP 2005458923.20 ppb
2019-08-20DBP 2005458932.40 ppb
2019-11-19DBP 2005574043.60 ppb
2019-11-19DBP 2005574053.50 ppb
2019-11-19DBP 2005574063.60 ppb
2019-11-19DBP 2005574071.80 ppb