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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Pennsylvania American Water Company West

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

 

166

Samples

0

Samples exceeding legal limit (MCL)

161

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.23 ppb32320.700 ppb - 1.90 ppb
20151.47 ppb32320.700 ppb - 2.40 ppb
20161.76 ppb20200.700 ppb - 4.00 ppb
20171.12 ppb1817ND - 2.10 ppb
20180.816 ppb3230ND - 1.30 ppb
20191.20 ppb3230ND - 3.10 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
2014-02-06246547010.800 ppb
2014-02-06246552010.800 ppb
2014-02-06246550010.700 ppb
2014-02-06246551011.30 ppb
2014-02-06246549010.800 ppb
2014-02-06246561010.800 ppb
2014-02-06246548010.700 ppb
2014-02-06246546011.20 ppb
2014-05-07260126011.20 ppb
2014-05-07260131011.20 ppb
2014-05-07260129011.20 ppb
2014-05-07260130011.70 ppb
2014-05-07260128011.10 ppb
2014-05-07260132010.900 ppb
2014-05-07260127010.900 ppb
2014-05-07260125011.90 ppb
2014-08-06265021011.80 ppb
2014-08-06265026011.90 ppb
2014-08-06265024011.50 ppb
2014-08-06265025011.80 ppb
2014-08-06265023011.80 ppb
2014-08-06265034011.50 ppb
2014-08-06265022011.30 ppb
2014-08-06265020011.70 ppb
2014-11-05273574011.10 ppb
2014-11-05273579011.20 ppb
2014-11-05273577010.800 ppb
2014-11-05273578011.30 ppb
2014-11-05273576011.20 ppb
2014-11-05273587010.900 ppb
2014-11-05273575010.800 ppb
2014-11-05273573011.50 ppb
2015-02-05124792120.800 ppb
2015-02-05124792420.800 ppb
2015-02-05124792300.700 ppb
2015-02-05124792361.10 ppb
2015-02-05124792241.000 ppb
2015-02-05124792510.800 ppb
2015-02-05124792180.800 ppb
2015-02-05124792061.10 ppb
2015-05-05128414841.60 ppb
2015-05-05128415141.50 ppb
2015-05-05128415021.40 ppb
2015-05-05128415081.80 ppb
2015-05-05128414961.70 ppb
2015-05-05128415241.40 ppb
2015-05-05128414901.50 ppb
2015-05-05128414781.70 ppb
2015-08-05132256412.00 ppb
2015-08-05132256712.00 ppb
2015-08-05132256592.00 ppb
2015-08-05132256652.30 ppb
2015-08-05132256531.80 ppb
2015-08-05132256791.90 ppb
2015-08-05132256472.00 ppb
2015-08-05132256352.40 ppb
2015-11-09135965461.20 ppb
2015-11-09135965761.000 ppb
2015-11-09135965641.40 ppb
2015-11-09135965701.60 ppb
2015-11-09135965581.20 ppb
2015-11-09135965841.40 ppb
2015-11-09135965521.50 ppb
2015-11-09135965401.60 ppb
2016-02-08139495790.700 ppb
2016-02-08139495910.700 ppb
2016-02-08139495850.700 ppb
2016-02-08139495730.700 ppb
2016-05-06143597031.40 ppb
2016-05-06143597151.30 ppb
2016-05-06143597091.50 ppb
2016-05-06143596971.40 ppb
2016-08-05148577182.40 ppb
2016-08-05148577302.60 ppb
2016-08-05148577243.50 ppb
2016-08-05148577124.00 ppb
2016-08-09148577542.20 ppb
2016-08-09148577482.00 ppb
2016-08-09148577602.10 ppb
2016-08-09148577422.20 ppb
2016-11-08153269161.20 ppb
2016-11-08153269281.20 ppb
2016-11-08153269221.50 ppb
2016-11-08153269101.90 ppb
2017-02-06157522760.700 ppb
2017-02-06157522880.700 ppb
2017-02-06157522820.700 ppb
2017-02-06157522700.900 ppb
2017-05-08162083281.30 ppb
2017-05-08162083401.50 ppb
2017-05-08162083341.10 ppb
2017-05-08162083221.30 ppb
2017-06-15163693341.80 ppb
2017-08-04166802632.10 ppb
2017-08-04166802751.60 ppb
2017-08-04166802691.60 ppb
2017-08-04166802570.900 ppb
2017-08-1116680251ND
2017-11-06171206711.000 ppb
2017-11-06171206831.000 ppb
2017-11-06171206770.900 ppb
2017-11-06171206651.000 ppb
2018-02-05385336010.700 ppb
2018-02-05385338010.800 ppb
2018-02-05388464010.500 ppb
2018-02-05385337010.800 ppb
2018-02-05388463010.700 ppb
2018-02-05388465010.600 ppb
2018-02-05388462010.500 ppb
2018-02-05385335010.800 ppb
2018-05-07393786010.700 ppb
2018-05-0739379101ND
2018-05-07393789011.30 ppb
2018-05-07393790011.10 ppb
2018-05-0739378801ND
2018-05-07393795011.30 ppb
2018-05-07393787010.600 ppb
2018-05-07393785011.20 ppb
2018-08-06406322011.000 ppb
2018-08-06406327010.800 ppb
2018-08-06406325011.10 ppb
2018-08-06406326010.900 ppb
2018-08-06406324011.20 ppb
2018-08-06406331011.000 ppb
2018-08-06406323011.20 ppb
2018-08-06406321010.800 ppb
2018-11-05417590010.700 ppb
2018-11-05417595011.10 ppb
2018-11-05417593010.700 ppb
2018-11-05417594010.800 ppb
2018-11-05417592010.800 ppb
2018-11-05417599011.000 ppb
2018-11-05417591010.600 ppb
2018-11-05417589010.800 ppb
2019-02-04428475010.800 ppb
2019-02-04428476010.700 ppb
2019-02-04428485010.700 ppb
2019-02-0442847701ND
2019-02-04428483010.800 ppb
2019-02-04428484010.700 ppb
2019-02-04428486010.600 ppb
2019-02-0442847801ND
2019-05-06440077011.10 ppb
2019-05-06440078011.000 ppb
2019-05-06440087011.000 ppb
2019-05-06440079011.20 ppb
2019-05-06440085011.10 ppb
2019-05-06440086011.000 ppb
2019-05-06440088011.000 ppb
2019-05-06440080011.30 ppb
2019-08-05458175011.80 ppb
2019-08-05458176012.00 ppb
2019-08-05458185012.00 ppb
2019-08-05458177012.40 ppb
2019-08-05458183012.30 ppb
2019-08-05458184011.80 ppb
2019-08-05458186011.80 ppb
2019-08-05458178013.10 ppb
2019-11-04473568011.20 ppb
2019-11-04473569011.10 ppb
2019-11-04473576010.700 ppb
2019-11-04473570011.000 ppb
2019-11-04473577010.800 ppb
2019-11-04473578011.000 ppb
2019-11-04473579010.800 ppb
2019-11-04473571011.50 ppb