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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Chino Hills

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

 

172

Samples

0

Samples exceeding legal limit (MCL)

144

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20149.47 ppb1917ND - 15.0 ppb
20157.12 ppb3229ND - 15.0 ppb
201613.4 ppb2724ND - 29.0 ppb
20173.19 ppb3620ND - 13.0 ppb
201814.8 ppb2422ND - 26.0 ppb
201915.2 ppb3432ND - 50.0 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
2014-01-234790-001-1300ND
2014-01-234790-017-1330ND
2014-05-224790-601-10059.00 ppb
2014-05-224790-602-09108.00 ppb
2014-05-224790-603-14508.70 ppb
2014-05-224790-604-10209.40 ppb
2014-05-224790-605-093011.0 ppb
2014-05-224790-606-15159.80 ppb
2014-05-224790-607-09508.40 ppb
2014-05-224790-608-10359.40 ppb
2014-08-124790-601-100014.0 ppb
2014-08-124790-602-085513.0 ppb
2014-08-124790-603-120014.0 ppb
2014-08-124790-604-102012.0 ppb
2014-08-124790-605-092010.00 ppb
2014-08-124790-606-105010.00 ppb
2014-08-124790-607-093515.0 ppb
2014-08-124790-608-103513.0 ppb
2014-11-134790-601-10205.20 ppb
2015-02-194790-601-111513.0 ppb
2015-02-194790-602-12008.20 ppb
2015-02-194790-603-091513.0 ppb
2015-02-194790-604-104512.0 ppb
2015-02-194790-605-113015.0 ppb
2015-02-194790-606-084510.00 ppb
2015-02-194790-607-103013.0 ppb
2015-02-194790-608-110012.0 ppb
2015-05-214790-601-1000ND
2015-05-214790-602-0830ND
2015-05-214790-603-10500.570 ppb
2015-05-214790-604-09150.510 ppb
2015-05-214790-605-10150.670 ppb
2015-05-214790-606-09300.850 ppb
2015-05-214790-607-1030ND
2015-05-214790-608-09001.80 ppb
2015-08-274790-601-10457.70 ppb
2015-08-274790-602-09358.00 ppb
2015-08-274790-603-08108.30 ppb
2015-08-274790-604-11258.50 ppb
2015-08-274790-605-10107.90 ppb
2015-08-274790-606-08307.50 ppb
2015-08-274790-607-08506.50 ppb
2015-08-274790-608-10308.00 ppb
2015-11-174790-601-10407.90 ppb
2015-11-174790-602-10207.80 ppb
2015-11-174790-603-12207.00 ppb
2015-11-174790-604-11158.50 ppb
2015-11-174790-605-10008.90 ppb
2015-11-174790-606-11508.50 ppb
2015-11-174790-607-09457.90 ppb
2015-11-174790-608-11058.30 ppb
2016-02-234790-601-10008.00 ppb
2016-03-034790-014-1130ND
2016-03-034790-024-1030ND
2016-05-264790-601-114511.0 ppb
2016-05-264790-602-144510.00 ppb
2016-05-264790-603-084512.0 ppb
2016-05-264790-604-095012.0 ppb
2016-05-264790-605-111013.0 ppb
2016-05-264790-606-124011.0 ppb
2016-05-264790-607-113011.0 ppb
2016-05-264790-608-104012.0 ppb
2016-08-259588-601-122513.0 ppb
2016-08-259588-602-132012.0 ppb
2016-08-259588-603-14107.70 ppb
2016-08-259588-604-120013.0 ppb
2016-08-259588-605-125512.0 ppb
2016-08-259588-606-113013.0 ppb
2016-08-259588-607-124013.0 ppb
2016-08-259588-608-114513.0 ppb
2016-12-159588-601-103019.0 ppb
2016-12-159588-602-122028.0 ppb
2016-12-159588-603-0915ND
2016-12-159588-604-100025.0 ppb
2016-12-159588-605-110529.0 ppb
2016-12-159588-606-094026.0 ppb
2016-12-159588-607-105515.0 ppb
2016-12-159588-608-095023.0 ppb
2017-02-169588-001-1010ND
2017-02-169588-017-1040ND
2017-02-239588-601-0925ND
2017-02-239588-602-0850ND
2017-02-239588-603-1300ND
2017-02-239588-604-10401.000 ppb
2017-02-239588-605-0910ND
2017-02-239588-606-1125ND
2017-02-239588-607-1020ND
2017-02-239588-608-1100ND
2017-04-199588-009-1030ND
2017-04-199588-010-0945ND
2017-05-269588-601-09501.60 ppb
2017-05-269588-602-0840ND
2017-05-269588-603-1215ND
2017-05-269588-604-10151.000 ppb
2017-05-269588-605-09201.10 ppb
2017-05-269588-606-11401.50 ppb
2017-05-269588-607-0935ND
2017-05-269588-608-10301.30 ppb
2017-08-239588-601-10405.00 ppb
2017-08-239588-602-12204.80 ppb
2017-08-239588-603-0845ND
2017-08-239588-604-09504.30 ppb
2017-08-239588-605-11005.30 ppb
2017-08-239588-606-09155.00 ppb
2017-08-239588-607-10104.10 ppb
2017-08-239588-608-09354.90 ppb
2017-11-159588-601-093011.0 ppb
2017-11-159588-602-104013.0 ppb
2017-11-159588-603-0800ND
2017-11-159588-604-090011.0 ppb
2017-11-159588-605-100513.0 ppb
2017-11-159588-606-08309.10 ppb
2017-11-159588-607-09555.00 ppb
2017-11-159588-608-084512.0 ppb
2018-05-309588-601-134517.0 ppb
2018-05-309588-602-141016.0 ppb
2018-05-309588-603-1055ND
2018-05-309588-604-133017.0 ppb
2018-05-309588-605-102515.0 ppb
2018-05-309588-606-092014.0 ppb
2018-05-309588-607-104017.0 ppb
2018-05-309588-608-100019.0 ppb
2018-08-284790-601-133013.0 ppb
2018-08-284790-602-135515.0 ppb
2018-08-284790-603-0925ND
2018-08-284790-604-132013.0 ppb
2018-08-284790-605-111013.0 ppb
2018-08-284790-606-094514.0 ppb
2018-08-284790-607-113014.0 ppb
2018-08-284790-608-105014.0 ppb
2018-12-214790-601-094515.0 ppb
2018-12-214790-602-091021.0 ppb
2018-12-214790-603-105013.0 ppb
2018-12-214790-604-100518.0 ppb
2018-12-214790-605-093526.0 ppb
2018-12-214790-606-103018.0 ppb
2018-12-214790-607-095515.0 ppb
2018-12-214790-608-101518.0 ppb
2019-02-269588-601-094023.0 ppb
2019-02-269588-602-131026.0 ppb
2019-02-269588-603-111518.0 ppb
2019-02-269588-604-101530.0 ppb
2019-02-269588-605-092050.0 ppb
2019-02-269588-606-105531.0 ppb
2019-02-269588-607-090024.0 ppb
2019-02-269588-608-104028.0 ppb
2019-06-184790-601-122015.0 ppb
2019-06-184790-602-125015.0 ppb
2019-06-184790-603-103012.0 ppb
2019-06-184790-604-133516.0 ppb
2019-06-184790-605-105514.0 ppb
2019-06-184790-606-140011.0 ppb
2019-06-184790-607-104514.0 ppb
2019-06-184790-608-13455.10 ppb
2019-08-284790-601-112013.0 ppb
2019-08-284790-602-100512.0 ppb
2019-08-284790-603-09153.70 ppb
2019-08-284790-604-113512.0 ppb
2019-08-284790-605-10304.70 ppb
2019-08-284790-606-121511.0 ppb
2019-08-284790-607-110512.0 ppb
2019-08-284790-608-11555.80 ppb
2019-11-204790-601-111514.0 ppb
2019-11-204790-602-130013.0 ppb
2019-11-204790-603-100013.0 ppb
2019-11-204790-604-105514.0 ppb
2019-11-204790-605-121515.0 ppb
2019-11-204790-606-102514.0 ppb
2019-11-204790-607-113014.0 ppb
2019-11-204790-608-104014.0 ppb
2019-11-264790-014-0820ND
2019-11-264790-024-1000ND