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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Scarsdale Water Department

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.66 ppb16162.80 ppb - 4.80 ppb
20157.87 ppb16162.80 ppb - 39.0 ppb
20164.29 ppb16163.40 ppb - 5.40 ppb
20174.32 ppb16163.10 ppb - 4.90 ppb
20184.24 ppb16163.40 ppb - 5.00 ppb
20193.24 ppb16162.40 ppb - 4.10 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
2014-01-17201401200021DBP3.40 ppb
2014-01-17201401200020DBP2.80 ppb
2014-01-17201401200019DBP2.90 ppb
2014-01-17201401200022DBP3.60 ppb
2014-04-17201404180351DBP3.80 ppb
2014-04-17201404180349DBP3.90 ppb
2014-04-17201404180348DBP3.80 ppb
2014-04-17201404180350DBP3.40 ppb
2014-07-17201407180424DBP3.70 ppb
2014-07-17201407180423DBP3.00 ppb
2014-07-17201407180425DBP4.00 ppb
2014-07-17201407180422DBP3.00 ppb
2014-10-17201410180109 DBP4.80 ppb
2014-10-17201410180106 DBP4.20 ppb
2014-10-17201410180108 DBP4.00 ppb
2014-10-17201410180107 DBP4.30 ppb
2015-01-16201501170042DBP3.30 ppb
2015-01-16201501170044DBP33.0 ppb
2015-01-16201501170043DBP3.50 ppb
2015-01-16201501170045DBP4.00 ppb
2015-04-17201504180152DBP4.50 ppb
2015-04-17201504180149DBP3.80 ppb
2015-04-17201504180150DBP3.90 ppb
2015-04-17201504180151DBP39.0 ppb
2015-07-28201507290517 DBP3.10 ppb
2015-07-28201507290514 DBP2.80 ppb
2015-07-28201507290515 DBP3.90 ppb
2015-07-28201507290516 DBP5.30 ppb
2015-10-15201510160385 DBP3.60 ppb
2015-10-15201510160387 DBP3.80 ppb
2015-10-15201510160386 DBP3.70 ppb
2015-10-15201510160388 DBP4.70 ppb
2016-01-20201601210649 Q14.30 ppb
2016-01-21201601210648 DBP4.20 ppb
2016-01-21201601210651 DBP4.90 ppb
2016-01-21201601210650 Q14.30 ppb
2016-04-18201604190508 DBP3.80 ppb
2016-04-18201604190509 DBP4.00 ppb
2016-04-18201604190506 DBP4.50 ppb
2016-04-18201604190507 DBP3.40 ppb
2016-07-18201607190663 DBP4.30 ppb
2016-07-18201607190661 DBP5.40 ppb
2016-07-18201607190662 DBP3.60 ppb
2016-07-18201607190664 DBP4.50 ppb
2016-10-17201610180615 DBP4.50 ppb
2016-10-17201610180616 DBP5.20 ppb
2016-10-17201610180613 DBP3.70 ppb
2016-10-17201610180614 DBP4.00 ppb
2017-01-17201701180837 DBP4.80 ppb
2017-01-17201701180838 DBP4.80 ppb
2017-01-17201701180835 DBP4.20 ppb
2017-01-17201701180836 DBP4.40 ppb
2017-04-17201704180813-DBP4.60 ppb
2017-04-17201704180816-DBP4.40 ppb
2017-04-17201704180815-DBP4.70 ppb
2017-04-17201704180814-DBP4.20 ppb
2017-07-17201707180303-DBP3.10 ppb
2017-07-17201707180304-DBP3.90 ppb
2017-07-17201707180301-DBP3.50 ppb
2017-07-17201707180302-DBP4.50 ppb
2017-10-17201710180635-DBP4.80 ppb
2017-10-17201710180634-DBP4.90 ppb
2017-10-17201710180632-DBP4.30 ppb
2017-10-17201710180633-DBP4.00 ppb
2018-01-17201801180349-DBP4.20 ppb
2018-01-17201801180350-DBP3.50 ppb
2018-01-17201801180351-DBP4.80 ppb
2018-01-17201801180352-DBP5.00 ppb
2018-04-17201804180719-DBP4.30 ppb
2018-04-17201804180720-DBP3.60 ppb
2018-04-17201804180721-DBP3.90 ppb
2018-04-17201804180722-DBP4.60 ppb
2018-07-17201807200435-DBP4.00 ppb
2018-07-17201807200439-DBP4.10 ppb
2018-07-17201807200437-DBP4.10 ppb
2018-07-17201807200433-DBP3.40 ppb
2018-10-17201810180783-DBP5.00 ppb
2018-10-17201810180781-DBP4.60 ppb
2018-10-17201810180782-DBP4.20 ppb
2018-10-17201810180784-DBP4.60 ppb
2019-01-17201901180375-DBP3.40 ppb
2019-01-17201901180376-DBP3.60 ppb
2019-01-17201901180374-DBP3.40 ppb
2019-01-17201901180373-DBP3.50 ppb
2019-04-17201904180644-DBP4.10 ppb
2019-04-17201904180643-DBP3.70 ppb
2019-04-17201904180642-DBP2.40 ppb
2019-04-17201904180641-DBP4.10 ppb
2019-07-17201907180459-DBP2.40 ppb
2019-07-17201907180458-DBP2.80 ppb
2019-07-17201907180457-DBP2.80 ppb
2019-07-17201907180460-DBP3.20 ppb
2019-10-17201910180231-DBP2.80 ppb
2019-10-17201910180233-DBP3.50 ppb
2019-10-17201910180232-DBP3.00 ppb
2019-10-17201910180230-DBP3.20 ppb