Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromodichloromethane

Chelan County PUD 1

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.20 ppb111.20 ppb
20131.50 ppb111.50 ppb
20140.882 ppb1110ND - 1.40 ppb
20150.675 ppb129ND - 1.10 ppb
20160.825 ppb1211ND - 1.20 ppb
20171.03 ppb660.600 ppb - 1.90 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
2012-07-17716331.20 ppb
2013-08-07727751.50 ppb
2014-05-21736140.700 ppb
2014-05-21736131.000 ppb
2014-05-21736111.000 ppb
2014-05-2173615ND
2014-08-19740361.20 ppb
2014-08-19740350.600 ppb
2014-08-20740340.700 ppb
2014-10-16744051.10 ppb
2014-10-16744041.40 ppb
2014-10-16744020.600 ppb
2014-10-16744031.40 ppb
2015-03-1874820ND
2015-03-18748230.900 ppb
2015-03-1874822ND
2015-03-18748210.800 ppb
2015-04-22749520.600 ppb
2015-04-22749531.000 ppb
2015-04-2274951ND
2015-04-22749501.10 ppb
2015-10-07755461.10 ppb
2015-10-07755480.700 ppb
2015-10-07755471.000 ppb
2015-10-07755450.900 ppb
2016-04-271.000 ppb
2016-04-270.800 ppb
2016-04-270.800 ppb
2016-04-271.000 ppb
2016-07-131.20 ppb
2016-07-131.10 ppb
2016-07-130.700 ppb
2016-07-13ND
2016-12-010.700 ppb
2016-12-010.900 ppb
2016-12-010.700 ppb
2016-12-011.000 ppb
2017-01-230.600 ppb
2017-01-230.600 ppb
2017-01-230.700 ppb
2017-01-230.900 ppb
2017-11-211.50 ppb
2017-11-211.90 ppb