Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dibromochloromethane

Notla Water Authority

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

 

65

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
20150.178 ppb91ND - 1.60 ppb
20160.163 ppb161ND - 2.60 ppb
20170.233 ppb91ND - 2.10 ppb
20180.733 ppb92ND - 3.70 ppb
20190.531 ppb132ND - 4.20 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
2014-03-12AI35911ND
2014-03-12AI35910ND
2014-06-03AI42034ND
2014-06-10AI42828ND
2014-06-10AI42827ND
2014-09-09AI53062ND
2014-09-09AI53061ND
2014-12-03AI60569ND
2014-12-03AI60568ND
2015-03-09AI68587ND
2015-03-09AI68586ND
2015-04-14AI74803ND
2015-06-17AI80140ND
2015-06-17AI80139ND
2015-09-02AI88586ND
2015-09-02AI885871.60 ppb
2015-12-07AJ02057ND
2015-12-07AJ02056ND
2016-03-14AJ08147ND
2016-03-14AJ08146ND
2016-05-04AJ11586ND
2016-05-04AJ11585ND
2016-05-04AJ11584ND
2016-05-04AJ11583ND
2016-05-04AJ11582ND
2016-05-04AJ11581ND
2016-05-04AJ11580ND
2016-05-04AJ11579ND
2016-06-06AJ13391ND
2016-06-06AJ13390ND
2016-08-29AJ24602ND
2016-08-29AJ24603ND
2016-12-12AJ366302.60 ppb
2016-12-12AJ36629ND
2017-03-06AJ47446ND
2017-03-06AJ47445ND
2017-06-19AJ57907ND
2017-06-19AJ57906ND
2017-06-19AJ57872ND
2017-09-06AJ67153ND
2017-09-06AJ671542.10 ppb
2017-12-04AJ74599ND
2017-12-04AJ74598ND
2018-03-05AJ84937ND
2018-03-05AJ84936ND
2018-06-06AJ909182.90 ppb
2018-06-06AJ90917ND
2018-06-06AJ90906ND
2018-09-11AK004883.70 ppb
2018-09-11AK00487ND
2018-12-13AK08217ND
2018-12-13AK08216ND
2019-03-11AK13069ND
2019-03-11AK13068ND
2019-05-15AK17598ND
2019-05-15AK17597ND
2019-05-15AK17596ND
2019-05-15AK17595ND
2019-05-15AK17594ND
2019-06-12AK19671ND
2019-06-12AK19670ND
2019-09-12AK303514.20 ppb
2019-09-12AK30350ND
2019-12-16AK38530ND
2019-12-16AK385312.70 ppb