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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Suffolk

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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

 

153

Samples

0

Samples exceeding legal limit (MCL)

135

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20148.51 ppb991.60 ppb - 10.2 ppb
201513.9 ppb109ND - 18.0 ppb
20168.93 ppb1110ND - 12.7 ppb
20177.68 ppb4137ND - 14.7 ppb
20187.69 ppb4137ND - 17.2 ppb
20197.08 ppb4133ND - 12.5 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-10-0714-15299-THM10.2 ppb
2014-10-0714-15302-THM10.2 ppb
2014-10-0714-15303-THM9.80 ppb
2014-10-0714-15304-THM9.50 ppb
2014-10-0714-15300-THM9.30 ppb
2014-10-0714-15305-THM9.10 ppb
2014-10-0714-15306-THM8.80 ppb
2014-10-0714-15301-THM8.10 ppb
2014-10-0714-15308-THM1.60 ppb
2015-07-08460013-JAMES R.18.0 ppb
2015-07-08460013-JAMES R.17.7 ppb
2015-07-08460013-JAMES R.17.6 ppb
2015-07-08460013-JAMES R.17.4 ppb
2015-07-08460013-JAMES R.17.2 ppb
2015-07-08460013-JAMES R.16.6 ppb
2015-07-08460013-JAMES R.16.1 ppb
2015-07-08460013-JAMES R.15.4 ppb
2015-07-08460013-JAMES R.2.80 ppb
2015-07-08460013-JAMES R.ND
2016-07-0716-12066-VOC1.60 ppb
2016-07-1316-12426-THM1.60 ppb
2016-07-1316-12425-THMND
2016-07-1316-12420-THM12.7 ppb
2016-07-1316-12423-THM12.6 ppb
2016-07-1316-12421-THM12.6 ppb
2016-07-1316-12418-THM12.5 ppb
2016-07-1316-12417-THM12.3 ppb
2016-07-1316-12419-THM12.1 ppb
2016-07-1316-12422-THM11.2 ppb
2016-07-1316-12424-THM9.00 ppb
2017-01-1217-00569-THM6.30 ppb
2017-01-1217-00568-THM6.10 ppb
2017-01-1217-00571-THM6.10 ppb
2017-01-1217-00570-THM5.90 ppb
2017-01-1217-00572-THM5.40 ppb
2017-01-1217-00567-THM4.00 ppb
2017-01-1217-00566-THM3.30 ppb
2017-01-1217-00573-THM3.10 ppb
2017-01-1217-00574-THM1.60 ppb
2017-01-1217-00575-THMND
2017-04-1317-06427-THM8.00 ppb
2017-04-1317-06434-THM1.80 ppb
2017-04-1317-06433-THMND
2017-04-1317-06426-THM10.3 ppb
2017-04-1317-06428-THM9.70 ppb
2017-04-1317-06425-THM9.50 ppb
2017-04-1317-06430-THM9.50 ppb
2017-04-1317-06429-THM9.10 ppb
2017-04-1317-06432-HM8.50 ppb
2017-04-1317-06431-THM8.40 ppb
2017-07-0617-11698-VOC2.00 ppb
2017-07-1217-12096-THM1.90 ppb
2017-07-1217-12095-THMND
2017-07-1217-12091-THM14.7 ppb
2017-07-1217-12088-THM14.1 ppb
2017-07-1217-12090-THM14.0 ppb
2017-07-1217-12087-THM13.7 ppb
2017-07-1217-12089-THM13.1 ppb
2017-07-1217-12094-THM13.0 ppb
2017-07-1217-12093-THM12.8 ppb
2017-07-1217-12092-THM12.6 ppb
2017-10-1117-18901-THM2.10 ppb
2017-10-1117-18902-THMND
2017-10-1117-18908-THM11.6 ppb
2017-10-1117-18911-THM11.4 ppb
2017-10-1117-18909-THM11.2 ppb
2017-10-1117-18910-THM11.1 ppb
2017-10-1117-18906-THM10.3 ppb
2017-10-1117-18905-THM10.00 ppb
2017-10-1117-18904-THM9.40 ppb
2017-10-1117-18903-THM9.30 ppb
2018-01-1018-00602-THM8.10 ppb
2018-01-1018-00603-THM7.20 ppb
2018-01-1018-00604-THM3.50 ppb
2018-01-1018-00605-THM5.50 ppb
2018-01-1018-00606-THM6.50 ppb
2018-01-1018-00607-THM3.10 ppb
2018-01-1018-00608-THM2.00 ppb
2018-01-1018-00609-THM1.10 ppb
2018-01-1018-00610-THM0.800 ppb
2018-01-1018-00611-THMND
2018-04-1018-06470-THM9.90 ppb
2018-04-1018-06471-THM9.50 ppb
2018-04-1018-06472-THM7.20 ppb
2018-04-1018-06473-THM10.4 ppb
2018-04-1018-06474-THM10.00 ppb
2018-04-1018-06475-THM9.60 ppb
2018-04-1018-06476-THM9.30 ppb
2018-04-1018-06477-THM9.70 ppb
2018-04-1018-06478-THMND
2018-04-1018-06479-THM2.20 ppb
2018-07-0518-13374-VOC2.00 ppb
2018-07-1018-13763-THM16.1 ppb
2018-07-1018-13764-THM15.8 ppb
2018-07-1018-13765-THM14.5 ppb
2018-07-1018-13766-THM17.2 ppb
2018-07-1018-13767-THM16.8 ppb
2018-07-1018-13768-THM11.7 ppb
2018-07-1018-13769-THM11.5 ppb
2018-07-1018-13770-THM8.70 ppb
2018-07-1018-13771-THMND
2018-07-1018-13772-THM2.20 ppb
2018-10-1018-20189-THM12.9 ppb
2018-10-1018-20190-THM11.4 ppb
2018-10-1018-20191-THM10.4 ppb
2018-10-1018-20192-THM11.6 ppb
2018-10-1018-20193-THM12.0 ppb
2018-10-1018-20194-THM8.80 ppb
2018-10-1018-20195-THM9.60 ppb
2018-10-1018-20196-THM4.90 ppb
2018-10-1018-20197-THMND
2018-10-1018-20198-THM1.60 ppb
2019-01-0819-00543-THM7.40 ppb
2019-01-0819-00544-THM7.60 ppb
2019-01-0819-00545-THM5.40 ppb
2019-01-0819-00546-THM7.60 ppb
2019-01-0819-00547-THM6.90 ppb
2019-01-0819-00548-THM6.90 ppb
2019-01-0819-00549-THM6.60 ppb
2019-01-0819-00550-THM6.60 ppb
2019-01-0819-00551-THMND
2019-01-0819-00552-THM1.70 ppb
2019-04-0919-06237-THM7.60 ppb
2019-04-0919-06238-THM7.60 ppb
2019-04-0919-06239-THM7.50 ppb
2019-04-0919-06240-THM7.80 ppb
2019-04-0919-06242-THM7.50 ppb
2019-04-0919-06243-THM8.00 ppb
2019-04-0919-06244-THM7.90 ppb
2019-04-0919-06245-THMND
2019-04-0919-06246-THMND
2019-04-0919-09241-THM8.30 ppb
2019-07-0919-12103T12.5 ppb
2019-07-0919-12104T12.2 ppb
2019-07-0919-12105T12.1 ppb
2019-07-0919-12106T12.4 ppb
2019-07-0919-12107T12.3 ppb
2019-07-0919-12108T10.3 ppb
2019-07-0919-12109T11.6 ppb
2019-07-0919-12110T10.9 ppb
2019-07-0919-12111TND
2019-07-0919-12112TND
2019-07-1519-12457VOCND
2019-10-0819-18405T9.40 ppb
2019-10-0819-18406T10.3 ppb
2019-10-0819-18407T8.90 ppb
2019-10-0819-18408T10.6 ppb
2019-10-0819-18409T9.40 ppb
2019-10-0819-18410T10.4 ppb
2019-10-0819-18411T8.60 ppb
2019-10-0819-18412T9.50 ppb
2019-10-0819-18413TND
2019-10-0819-18414TND