Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromodichloromethane

Mount Olive Township Water Department Sand

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

 

35

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND60ND
2016ND60ND
20170.250 ppb62ND - 0.900 ppb
2018ND50ND
2019ND60ND

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
2014-03-12340312116ND
2014-06-10340610136ND
2014-08-12340812110ND
2014-09-09340911113ND
2014-09-09340911114ND
2014-10-30341030056ND
2015-03-17350317088ND
2015-06-09350610207ND
2015-07-21350721097ND
2015-09-16350916114ND
2015-09-16350916112ND
2015-11-04351104126ND
2016-03-23360323104ND
2016-06-14360614178ND
2016-08-17360817121ND
2016-09-13360913164ND
2016-09-13360913163ND
2016-10-27361027100ND
2017-03-22370322080ND
2017-05-24370524110ND
2017-07-25370725098ND
2017-09-203709202190.900 ppb
2017-09-263709260670.600 ppb
2017-11-08371108147ND
2018-03-20380320180ND
2018-06-13380613159ND
2018-07-18380718185ND
2018-09-26380926154ND
2018-09-26380926156ND
2019-01-15390115195ND
2019-04-16390417217ND
2019-07-25390725040ND
2019-09-19390919086.1ND
2019-09-19390919085.1ND
2019-10-16391016245ND