Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Dibromochloromethane

Chesterfield Rural Water

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

22

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.383 ppb41ND - 1.53 ppb
20140.445 ppb164ND - 2.53 ppb
20150.743 ppb167ND - 2.60 ppb
20160.284 ppb163ND - 2.06 ppb
20170.600 ppb167ND - 1.69 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
2013-10-242131025-10ND
2013-10-242131025-7ND
2013-10-242131025-8ND
2013-10-242131025-91.53 ppb
2014-02-042140205-48ND
2014-02-042140205-471.33 ppb
2014-02-042140205-46ND
2014-02-042140205-45ND
2014-04-232140424-44ND
2014-04-232140424-43ND
2014-04-232140424-42ND
2014-04-232140424-41ND
2014-07-222140723-171.57 ppb
2014-07-222140723-18ND
2014-07-222140723-192.53 ppb
2014-07-222140723-201.69 ppb
2014-10-302141031-9ND
2014-10-302141031-8ND
2014-10-302141031-7ND
2014-10-302141031-10ND
2015-01-282150129-29ND
2015-01-282150129-30ND
2015-01-282150129-31ND
2015-01-282150129-32ND
2015-06-102150611-9ND
2015-06-102150611-8ND
2015-06-102150611-71.16 ppb
2015-06-102150611-10ND
2015-07-282150729-261.000 ppb
2015-07-282150729-27ND
2015-07-282150729-282.60 ppb
2015-08-132150814-161.65 ppb
2015-10-272151028-282.01 ppb
2015-10-272151028-271.53 ppb
2015-10-272151028-26ND
2015-10-272151028-251.93 ppb
2016-01-252160126-25ND
2016-01-252160126-26ND
2016-01-252160126-28ND
2016-01-252160126-27ND
2016-04-112160412-10ND
2016-04-112160412-9ND
2016-04-112160412-8ND
2016-04-112160412-7ND
2016-07-252160726-091.41 ppb
2016-07-252160726-07ND
2016-07-252160726-102.06 ppb
2016-07-252160726-081.08 ppb
2016-10-252161026-10ND
2016-10-252161026-09ND
2016-10-252161026-08ND
2016-10-252161026-07ND
2017-01-242170125-19ND
2017-01-242170125-20ND
2017-01-242170125-21ND
2017-01-242170125-22ND
2017-04-262170427-101.24 ppb
2017-04-262170427-09ND
2017-04-262170427-08ND
2017-04-262170427-07ND
2017-07-252170726-121.69 ppb
2017-07-252170726-111.16 ppb
2017-07-252170726-10ND
2017-07-252170726-091.69 ppb
2017-10-252171026-311.54 ppb
2017-10-252171026-32ND
2017-10-252171026-331.15 ppb
2017-10-252171026-341.13 ppb