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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Yorktown Consoldated Water District #1

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)

72

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.41 ppb1611ND - 3.60 ppb
20151.82 ppb1611ND - 6.00 ppb
20161.69 ppb168ND - 6.56 ppb
20172.33 ppb1612ND - 3.90 ppb
20182.28 ppb1614ND - 4.70 ppb
20192.53 ppb16161.000 ppb - 4.00 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
2014-02-111402886-004BDBPND
2014-02-111402886-003ADBPND
2014-02-111402886-001ADBPND
2014-02-271402F85-001DBPND
2014-05-131405A28-004DBP2.20 ppb
2014-05-131405A28-002DBP1.40 ppb
2014-05-131405A28-001DBP3.40 ppb
2014-05-131405A28-003DBP0.740 ppb
2014-08-151408B35-004DBP3.60 ppb
2014-08-151408B35-003DBP3.60 ppb
2014-08-151408B35-002DBP2.80 ppb
2014-08-151408B35-001DBP3.10 ppb
2014-11-101411B08-001 DBP0.600 ppb
2014-11-101411B08-002 DBPND
2014-11-101411B08-004 DBP0.670 ppb
2014-11-101411B08-003 DBP0.520 ppb
2015-02-171502B52-002 DBPND
2015-02-171502B52-003DBPND
2015-02-171502B52-001DBPND
2015-02-171502B52-004DBPND
2015-05-131505G39-002DBP2.77 ppb
2015-05-131505G39-003 DBP2.44 ppb
2015-05-131505G39-004DBP0.970 ppb
2015-05-131505G39-001DBP0.710 ppb
2015-08-13S000682-01 DBP5.10 ppb
2015-08-13S000682-02 DBP1.40 ppb
2015-08-13S000682-03 DBP2.20 ppb
2015-08-13S000682-04 DBP1.50 ppb
2015-11-10S002880-02 DBP1.90 ppb
2015-11-10S002880-03 DBP6.00 ppb
2015-11-10S002880-04 DBPND
2015-11-10S002880-01 DBP4.20 ppb
2016-02-12S004827-03 DBPND
2016-02-12S004827-04 DBPND
2016-02-12S004827-02 DBPND
2016-02-12S004827-01 DBPND
2016-05-04S007237-02 DBPND
2016-05-04S007237-01 DBPND
2016-05-04S007237-04 DBPND
2016-05-04S007237-03 DBPND
2016-08-02S009969-01 DBP0.970 ppb
2016-08-02S009969-062.17 ppb
2016-08-02S009969-041.26 ppb
2016-08-02SS09969-081.05 ppb
2016-11-09S013157-05 DBP4.04 ppb
2016-11-09S013157-07 DBP5.25 ppb
2016-11-09S013157-01 DBP5.81 ppb
2016-11-09S013157-03 DBP6.56 ppb
2017-02-07S015661-03 DBPND
2017-02-07S015661-01 DBPND
2017-02-07S015661-04 DBPND
2017-02-07S015661-02 DBPND
2017-05-02S018016-03-DBP22.28 ppb
2017-05-02S018016-04-DBP22.10 ppb
2017-05-02S018016-01-DBP22.26 ppb
2017-05-02S018016-02-DBP22.49 ppb
2017-08-017026293003-DBP23.90 ppb
2017-08-017026293001-DBP23.30 ppb
2017-08-017026293004-DBP23.80 ppb
2017-08-017026293002-DBP23.00 ppb
2017-11-097036129004-DBP23.70 ppb
2017-11-097036129002-DBP23.20 ppb
2017-11-097036129003-DBP23.60 ppb
2017-11-097036129001-DBP23.70 ppb
2018-02-067042567004-DBP2ND
2018-02-067042567002-DBP23.00 ppb
2018-02-067042567001-DBP22.30 ppb
2018-02-067042567003-DBP22.50 ppb
2018-05-027050658001-DBP22.40 ppb
2018-05-027050658003-DBP20.720 ppb
2018-05-027050658002-DBP21.10 ppb
2018-05-027050658004-DBP20.590 ppb
2018-08-077061329004-DBP2ND
2018-08-077061329001-DBP21.000 ppb
2018-08-077061329002-DBP23.70 ppb
2018-08-077061329003-DBP22.40 ppb
2018-11-057070640001-DBP24.50 ppb
2018-11-057070640003-DBP24.70 ppb
2018-11-057070640005-DBP23.60 ppb
2018-11-057070640007-DBP24.00 ppb
2019-02-077079030008-DBP22.30 ppb
2019-02-077079030004-DBP22.30 ppb
2019-02-077079030006-DBP22.20 ppb
2019-02-077079030002-DBP22.10 ppb
2019-05-067089090002DBP21.30 ppb
2019-05-067089090004DBP23.00 ppb
2019-05-067089090003DBP21.90 ppb
2019-05-067089090001DBP22.50 ppb
2019-08-0670100724004-DBP23.80 ppb
2019-08-0670100724002-DBP22.60 ppb
2019-08-0670100724008-DBP21.000 ppb
2019-08-0670100724006-DBP22.20 ppb
2019-11-0770111351001-DBP24.00 ppb
2019-11-0770111351004-DBP23.00 ppb
2019-11-0770111351003-DBP23.20 ppb
2019-11-0770111351002-DBP23.00 ppb