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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Chino Hills

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

155

Samples

0

Samples exceeding legal limit (MCL)

117

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20128.20 ppb2522ND - 14.0 ppb
20132.23 ppb1612ND - 4.90 ppb
201411.8 ppb1917ND - 17.0 ppb
20158.10 ppb3231ND - 18.0 ppb
201610.4 ppb2724ND - 35.0 ppb
20171.01 ppb3611ND - 5.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2012-05-224790-601-09153.90 ppb
2012-05-224790-602-10252.40 ppb
2012-05-224790-603-1215ND
2012-05-224790-604-1000ND
2012-05-224790-605-10302.80 ppb
2012-05-224790-606-08354.10 ppb
2012-05-224790-607-10454.30 ppb
2012-05-224790-608-09504.20 ppb
2012-07-184790-014-1130ND
2012-08-234790-601-090011.0 ppb
2012-08-234790-602-100011.0 ppb
2012-08-234790-603-080012.0 ppb
2012-08-234790-604-084511.0 ppb
2012-08-234790-605-091510.00 ppb
2012-08-234790-606-081511.0 ppb
2012-08-234790-607-093011.0 ppb
2012-08-234790-608-083011.0 ppb
2012-11-204790-601-09003.30 ppb
2012-11-204790-602-103011.0 ppb
2012-11-204790-603-084514.0 ppb
2012-11-204790-604-094514.0 ppb
2012-11-204790-605-101513.0 ppb
2012-11-204790-606-091514.0 ppb
2012-11-204790-607-100013.0 ppb
2012-11-204790-608-093013.0 ppb
2013-02-214790-601-11000.800 ppb
2013-02-214790-602-1140ND
2013-02-214790-603-1030ND
2013-02-214790-604-10450.680 ppb
2013-02-214790-605-11150.690 ppb
2013-02-214790-606-10150.690 ppb
2013-02-214790-607-0945ND
2013-02-214790-608-10000.940 ppb
2013-06-064790-601-08303.80 ppb
2013-06-064790-602-07304.30 ppb
2013-06-064790-603-09154.50 ppb
2013-06-064790-604-08154.80 ppb
2013-06-064790-605-08454.90 ppb
2013-06-064790-606-0745ND
2013-06-064790-607-09004.70 ppb
2013-06-064790-608-08004.80 ppb
2014-01-234790-001-1300ND
2014-01-234790-017-1330ND
2014-05-224790-601-100516.0 ppb
2014-05-224790-602-091013.0 ppb
2014-05-224790-603-145015.0 ppb
2014-05-224790-604-102016.0 ppb
2014-05-224790-605-093017.0 ppb
2014-05-224790-606-151517.0 ppb
2014-05-224790-607-095015.0 ppb
2014-05-224790-608-103514.0 ppb
2014-08-124790-601-100012.0 ppb
2014-08-124790-602-085511.0 ppb
2014-08-124790-603-120013.0 ppb
2014-08-124790-604-102012.0 ppb
2014-08-124790-605-092010.00 ppb
2014-08-124790-606-10509.90 ppb
2014-08-124790-607-093513.0 ppb
2014-08-124790-608-103512.0 ppb
2014-11-134790-601-10207.80 ppb
2015-02-194790-601-111518.0 ppb
2015-02-194790-602-12009.90 ppb
2015-02-194790-603-091516.0 ppb
2015-02-194790-604-104515.0 ppb
2015-02-194790-605-113017.0 ppb
2015-02-194790-606-084512.0 ppb
2015-02-194790-607-103018.0 ppb
2015-02-194790-608-110016.0 ppb
2015-05-214790-601-10000.760 ppb
2015-05-214790-602-0830ND
2015-05-214790-603-10500.820 ppb
2015-05-214790-604-09150.720 ppb
2015-05-214790-605-10150.910 ppb
2015-05-214790-606-09301.20 ppb
2015-05-214790-607-10300.630 ppb
2015-05-214790-608-09002.80 ppb
2015-08-274790-601-10456.90 ppb
2015-08-274790-602-09357.30 ppb
2015-08-274790-603-08107.00 ppb
2015-08-274790-604-11257.30 ppb
2015-08-274790-605-10106.90 ppb
2015-08-274790-606-08306.80 ppb
2015-08-274790-607-08505.90 ppb
2015-08-274790-608-10306.90 ppb
2015-11-174790-601-104013.0 ppb
2015-11-174790-602-10207.50 ppb
2015-11-174790-603-12207.70 ppb
2015-11-174790-604-11159.20 ppb
2015-11-174790-605-10009.40 ppb
2015-11-174790-606-115010.00 ppb
2015-11-174790-607-09458.50 ppb
2015-11-174790-608-11059.30 ppb
2016-02-234790-601-100013.0 ppb
2016-03-034790-014-1130ND
2016-03-034790-024-1030ND
2016-05-264790-601-11455.40 ppb
2016-05-264790-602-14455.00 ppb
2016-05-264790-603-08455.60 ppb
2016-05-264790-604-09505.60 ppb
2016-05-264790-605-11106.10 ppb
2016-05-264790-606-12405.10 ppb
2016-05-264790-607-11305.50 ppb
2016-05-264790-608-10405.80 ppb
2016-08-259588-601-12258.80 ppb
2016-08-259588-602-13208.00 ppb
2016-08-259588-603-14105.30 ppb
2016-08-259588-604-12008.70 ppb
2016-08-259588-605-12558.10 ppb
2016-08-259588-606-11309.00 ppb
2016-08-259588-607-12409.20 ppb
2016-08-259588-608-11459.40 ppb
2016-12-159588-601-103018.0 ppb
2016-12-159588-602-122035.0 ppb
2016-12-159588-603-0915ND
2016-12-159588-604-100022.0 ppb
2016-12-159588-605-110525.0 ppb
2016-12-159588-606-094023.0 ppb
2016-12-159588-607-105513.0 ppb
2016-12-159588-608-095021.0 ppb
2017-02-169588-001-1010ND
2017-02-169588-017-1040ND
2017-02-239588-601-09252.20 ppb
2017-02-239588-602-08501.20 ppb
2017-02-239588-603-1300ND
2017-02-239588-604-1040ND
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
2017-05-269588-601-0950ND
2017-05-269588-602-0840ND
2017-05-269588-603-1215ND
2017-05-269588-604-1015ND
2017-05-269588-605-0920ND
2017-05-269588-606-1140ND
2017-05-269588-607-0935ND
2017-05-269588-608-1030ND
2017-08-239588-601-1040ND
2017-08-239588-602-1220ND
2017-08-239588-603-0845ND
2017-08-239588-604-0950ND
2017-08-239588-605-1100ND
2017-08-239588-606-09151.20 ppb
2017-08-239588-607-1010ND
2017-08-239588-608-09351.000 ppb
2017-11-159588-601-09304.70 ppb
2017-11-159588-602-10404.50 ppb
2017-11-159588-603-0800ND
2017-11-159588-604-09004.70 ppb
2017-11-159588-605-10054.90 ppb
2017-11-159588-606-08304.30 ppb
2017-11-159588-607-09552.30 ppb
2017-11-159588-608-08455.30 ppb