Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromodichloromethane

Holmesville Water System

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

 

98

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20149.17 ppb18184.93 ppb - 14.4 ppb
201510.4 ppb16166.00 ppb - 15.7 ppb
201611.1 ppb16167.61 ppb - 17.2 ppb
201710.8 ppb16168.30 ppb - 17.4 ppb
2018ND160ND
20190.654 ppb1614ND - 2.10 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
2014-01-0212677667.53 ppb
2014-01-02126776510.4 ppb
2014-01-0212677667.53 ppb
2014-01-02126776510.4 ppb
2014-04-0112899307.70 ppb
2014-04-01ANALAB6.96 ppb
2014-04-0112899296.96 ppb
2014-04-01ANALAB6.96 ppb
2014-04-0112899307.70 ppb
2014-04-0112899296.96 ppb
2014-07-0713156794.93 ppb
2014-07-0713156809.47 ppb
2014-07-0713156809.47 ppb
2014-07-0713156794.93 ppb
2014-10-02133954314.2 ppb
2014-10-02133954414.4 ppb
2014-10-02133954414.4 ppb
2014-10-02133954314.2 ppb
2015-01-05136164011.8 ppb
2015-01-0513616416.00 ppb
2015-01-0513616416.00 ppb
2015-01-05136164011.8 ppb
2015-03-30138307713.5 ppb
2015-03-3013830769.29 ppb
2015-03-30138307713.5 ppb
2015-03-3013830769.29 ppb
2015-07-0114071339.42 ppb
2015-07-0114071339.42 ppb
2015-07-01140713215.7 ppb
2015-07-01140713215.7 ppb
2015-10-0514328056.09 ppb
2015-10-05143280611.4 ppb
2015-10-0514328056.09 ppb
2015-10-05143280611.4 ppb
2016-01-0414556387.61 ppb
2016-01-04145563914.6 ppb
2016-01-0414556387.61 ppb
2016-01-04145563914.6 ppb
2016-04-0614817769.64 ppb
2016-04-06148177510.00 ppb
2016-04-0614817769.64 ppb
2016-04-06148177510.00 ppb
2016-07-05150426617.2 ppb
2016-07-05150426617.2 ppb
2016-07-0515042659.33 ppb
2016-07-0515042659.33 ppb
2016-10-0315299708.17 ppb
2016-10-0315299708.17 ppb
2016-10-03152996912.2 ppb
2016-10-03152996912.2 ppb
2017-01-19352901410069.50 ppb
2017-01-193529014100510.00 ppb
2017-01-19352901410069.50 ppb
2017-01-193529014100510.00 ppb
2017-04-19353076740078.30 ppb
2017-04-19353076740078.30 ppb
2017-04-193530767400817.4 ppb
2017-04-193530767400817.4 ppb
2017-07-253532623300211.0 ppb
2017-07-25353262330019.70 ppb
2017-07-253532623300211.0 ppb
2017-07-25353262330019.70 ppb
2017-10-05353406630019.70 ppb
2017-10-053534066300210.6 ppb
2017-10-05353406630019.70 ppb
2017-10-053534066300210.6 ppb
2018-01-1235368391002ND
2018-01-1235368391002ND
2018-01-1235368391001ND
2018-01-1235368391001ND
2018-04-1135386282002ND
2018-04-1135386282001ND
2018-04-1135386282001ND
2018-04-1135386282002ND
2018-07-0535402792002ND
2018-07-0535402792001ND
2018-07-0535402792002ND
2018-07-0535402792001ND
2018-10-1135424029002ND
2018-10-1135424029001ND
2018-10-1135424029001ND
2018-10-1135424029002ND
2019-01-16354428940020.340 ppb
2019-01-16354428940010.440 ppb
2019-01-16354428940010.440 ppb
2019-01-16354428940020.340 ppb
2019-04-10354612510020.380 ppb
2019-04-10354612510020.380 ppb
2019-04-10354612510010.580 ppb
2019-04-10354612510010.580 ppb
2019-07-17354831890020.660 ppb
2019-07-17354831890010.730 ppb
2019-07-17354831890010.730 ppb
2019-07-17354831890020.660 ppb
2019-10-17355062970012.10 ppb
2019-10-1735506297002ND
2019-10-17355062970012.10 ppb
2019-10-1735506297002ND