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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Bedford Regional Water Authority (brwa)

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

 

115

Samples

0

Samples exceeding legal limit (MCL)

71

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
20160.357 ppb2011ND - 1.14 ppb
20171.32 ppb2318ND - 7.64 ppb
20180.918 ppb3230ND - 9.42 ppb
20190.191 ppb4012ND - 1.50 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
2016-01-211601L65-01A1.01 ppb
2016-02-221602P81-01AND
2016-02-221602P81-03AND
2016-04-2016042291-01A0.640 ppb
2016-04-2616042814-03A0.290 ppb
2016-04-2616042814-05AND
2016-05-1616051802-01AND
2016-05-1616051802-02AND
2016-07-1816071828-03A0.430 ppb
2016-07-1816071828-05A0.380 ppb
2016-07-2116072337-01A0.740 ppb
2016-08-2316083360-01A0.580 ppb
2016-08-2316083360-02A0.450 ppb
2016-10-1316101669-01A1.14 ppb
2016-10-1716101956-05A0.830 ppb
2016-10-1716101956-03A0.650 ppb
2016-10-2716103065-01AND
2016-10-2716103065-02AND
2016-11-1416111726-01AND
2016-11-1416111726-03AND
2017-01-1217011367-01A0.790 ppb
2017-01-1917012031-05A0.300 ppb
2017-01-1917012031-03AND
2017-02-1517021950-01AND
2017-02-1517021950-03AND
2017-04-1717041917-03AND
2017-04-1717041917-05AND
2017-04-2617042938-01A1.05 ppb
2017-05-2317053016-03A0.410 ppb
2017-05-2317053016-01A0.260 ppb
2017-07-2017072492-01A0.780 ppb
2017-07-2417072744--05A0.620 ppb
2017-07-2417072744-03A0.580 ppb
2017-08-0917081608-03A0.920 ppb
2017-08-0917081608-01A0.870 ppb
2017-10-1117101459-15A7.64 ppb
2017-10-1117101459-13A7.39 ppb
2017-10-1117101459-05A1.60 ppb
2017-10-1117101459-07A1.55 ppb
2017-10-1117101459-11A1.52 ppb
2017-10-1117101459-03A1.47 ppb
2017-10-1117101459-01A1.34 ppb
2017-10-1117101459-09A1.25 ppb
2018-01-1618011706-01A0.790 ppb
2018-01-1618011706-03A0.750 ppb
2018-01-1618011706-05A1.02 ppb
2018-01-1618011706-07A0.950 ppb
2018-01-1618011706-09A0.750 ppb
2018-01-1618011706-11A1.01 ppb
2018-01-1618011706-13A9.42 ppb
2018-01-1618011706-15A4.97 ppb
2018-04-1218041724-01A0.300 ppb
2018-04-1218041724-03A0.370 ppb
2018-04-1218041724-05A0.320 ppb
2018-04-1218041724-07A0.300 ppb
2018-04-1218041724-09A0.330 ppb
2018-04-1218041724-11A0.380 ppb
2018-04-1218041724-13A0.390 ppb
2018-04-1218041724-15A0.280 ppb
2018-07-2418073115-01A0.700 ppb
2018-07-2418073115-03A0.650 ppb
2018-07-2418073115-05A0.750 ppb
2018-07-2418073115-07A0.830 ppb
2018-07-2418073115-09A0.500 ppb
2018-07-2418073115-11A0.550 ppb
2018-07-2418073115-13A0.320 ppb
2018-07-2418073115-15A0.300 ppb
2018-10-1718102482-01A0.330 ppb
2018-10-1718102482-03A0.360 ppb
2018-10-1718102482-05A0.410 ppb
2018-10-1718102482-07A0.450 ppb
2018-10-1718102482-09A0.430 ppb
2018-10-1718102482-11A0.450 ppb
2018-10-1718102482-13AND
2018-10-1718102482-15AND
2019-01-2419012822-01A0.650 ppb
2019-01-2419012822-04AND
2019-01-2419012822-06AND
2019-01-2419012822-08AND
2019-01-2419012822-10AND
2019-01-2419012822-12A0.270 ppb
2019-01-2419012822-14AND
2019-01-2419012882-16AND
2019-04-1119041634-001AND
2019-04-1119041634-005AND
2019-04-1119041634-007AND
2019-04-1119041634-009AND
2019-04-1119041634-03AND
2019-04-1119041634-11AND
2019-04-1119041634-13AND
2019-04-1119041634-15AND
2019-07-1119071661-01AND
2019-07-1119071661-03AND
2019-07-1119071661-05AND
2019-07-1119071661-07AND
2019-07-1119071661-09AND
2019-07-1119071661-11AND
2019-07-1119071661-13AND
2019-07-1119071661-15AND
2019-07-23L1122790-010.420 ppb
2019-07-23L1122790-020.500 ppb
2019-07-23L1122790-030.516 ppb
2019-07-23L1122790-040.551 ppb
2019-07-23L1122790-050.553 ppb
2019-07-23L1122790-060.616 ppb
2019-07-23L1122790-070.468 ppb
2019-07-23L1122790-080.382 ppb
2019-10-10734387001ND
2019-10-10734387004ND
2019-10-10734387006ND
2019-10-10734387008ND
2019-10-10734387010ND
2019-10-10734387012ND
2019-10-107343870141.20 ppb
2019-10-107343870161.50 ppb