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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Little River WSA

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

43

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.06 ppb168ND - 2.75 ppb
20150.785 ppb166ND - 3.16 ppb
20160.670 ppb168ND - 1.47 ppb
20170.304 ppb164ND - 1.29 ppb
20180.803 ppb169ND - 2.88 ppb
20190.829 ppb168ND - 2.00 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
2014-02-052140206-30ND
2014-02-052140206-31ND
2014-02-052140206-32ND
2014-02-052140206-29ND
2014-04-212140422-19ND
2014-04-212140422-20ND
2014-04-212140422-21ND
2014-04-212140422-22ND
2014-07-222140723-391.54 ppb
2014-07-222140723-401.35 ppb
2014-07-222140723-411.68 ppb
2014-07-222140723-422.70 ppb
2014-10-282141029-72.65 ppb
2014-10-282141029-92.57 ppb
2014-10-282141029-81.73 ppb
2014-10-282141029-102.75 ppb
2015-01-272150128-13ND
2015-01-272150128-14ND
2015-01-272150128-15ND
2015-01-272150128-16ND
2015-04-202150421-19ND
2015-04-202150421-20ND
2015-04-202150421-21ND
2015-04-202150421-22ND
2015-07-272150728-72.93 ppb
2015-07-272150728-93.16 ppb
2015-07-272150728-102.74 ppb
2015-09-022150903-301.61 ppb
2015-11-112151112-100.900 ppb
2015-11-112151112-71.22 ppb
2015-11-112151112-8ND
2015-11-112151112-9ND
2016-01-272160128-391.29 ppb
2016-01-272160128-421.27 ppb
2016-01-272160128-401.22 ppb
2016-01-272160128-411.43 ppb
2016-04-2620160427-101.46 ppb
2016-04-2620160427-091.33 ppb
2016-04-2620160427-081.25 ppb
2016-04-2620160427-071.47 ppb
2016-07-252160726-23ND
2016-07-252160726-24ND
2016-07-252160726-25ND
2016-07-252160726-26ND
2016-11-292161130-15ND
2016-11-292161130-16ND
2016-11-292161130-17ND
2016-11-292161130-18ND
2017-01-182170119-25ND
2017-01-182170119-28ND
2017-01-182170119-26ND
2017-01-182170119-27ND
2017-04-262170427-27ND
2017-04-262170427-28ND
2017-04-262170427-29ND
2017-04-262170427-301.24 ppb
2017-08-022170803-18ND
2017-08-022170803-17ND
2017-08-022170803-16ND
2017-08-022170803-15ND
2017-10-252171026-51ND
2017-10-252171026-521.29 ppb
2017-10-252171026-531.21 ppb
2017-10-252171026-541.12 ppb
2018-01-242180125-40ND
2018-01-242180125-391.02 ppb
2018-01-242180125-381.13 ppb
2018-01-242180125-371.000 ppb
2018-04-252180426-38ND
2018-04-252180426-35ND
2018-04-252180426-36ND
2018-04-252180426-37ND
2018-07-252180726-42ND
2018-07-252180726-41ND
2018-07-252180726-401.28 ppb
2018-07-252180726-391.91 ppb
2018-10-232181024-611.18 ppb
2018-10-232181024-621.22 ppb
2018-10-232181024-631.24 ppb
2018-10-232181024-642.88 ppb
2019-01-312190201-21ND
2019-01-312190201-22ND
2019-01-312190201-23ND
2019-01-312190201-24ND
2019-04-242190426-31ND
2019-04-242190426-34ND
2019-04-242190426-33ND
2019-04-242190426-32ND
2019-07-252190726-381.20 ppb
2019-07-252190726-401.41 ppb
2019-07-252190726-391.46 ppb
2019-07-252190726-371.76 ppb
2019-10-232191024-141.60 ppb
2019-10-232191024-131.85 ppb
2019-10-232191024-121.98 ppb
2019-10-232191024-112.00 ppb