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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Azusa Light and Water

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.

MORE ABOUT THIS CONTAMINANT

 

259

Samples

0

Samples exceeding legal limit (MCL)

192

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.98 ppb4330ND - 11.0 ppb
20156.33 ppb4332ND - 28.0 ppb
20167.74 ppb4534ND - 29.0 ppb
20174.07 ppb4232ND - 11.0 ppb
20184.65 ppb4332ND - 13.0 ppb
20193.45 ppb4332ND - 15.0 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
2014-01-299588-800-11553.70 ppb
2014-01-299588-801-12151.20 ppb
2014-01-299588-802-13001.50 ppb
2014-01-299588-803-12351.20 ppb
2014-01-299588-804-12401.20 ppb
2014-01-299588-805-12501.20 ppb
2014-01-299588-806-13103.50 ppb
2014-01-299588-807-12251.30 ppb
2014-04-289588-800-08251.40 ppb
2014-04-289588-801-08103.80 ppb
2014-04-289588-802-08453.80 ppb
2014-04-289588-803-07307.30 ppb
2014-04-289588-804-07402.40 ppb
2014-04-289588-805-07502.30 ppb
2014-04-289588-806-09006.00 ppb
2014-04-289588-807-0800ND
2014-07-299588-800-1150ND
2014-07-299588-801-12102.20 ppb
2014-07-299588-802-13106.40 ppb
2014-07-299588-803-12353.60 ppb
2014-07-299588-804-12404.40 ppb
2014-07-299588-805-12553.80 ppb
2014-07-299588-806-09007.60 ppb
2014-07-299588-807-12202.90 ppb
2014-08-069588-003-0930ND
2014-08-069588-004-0920ND
2014-08-069588-005-1025ND
2014-08-069588-006-1040ND
2014-08-069588-007-1055ND
2014-08-069588-008-1105ND
2014-08-069588-033-0950ND
2014-08-069588-034-1000ND
2014-09-179588-002-0910ND
2014-10-299588-800-08206.40 ppb
2014-10-299588-801-08102.40 ppb
2014-10-299588-802-08409.00 ppb
2014-10-299588-803-07308.70 ppb
2014-10-299588-804-07406.60 ppb
2014-10-299588-805-07506.40 ppb
2014-10-299588-806-085011.0 ppb
2014-10-299588-807-08005.10 ppb
2014-11-069588-001-0910ND
2014-11-069588-010-0930ND
2015-01-309588-800-082522.0 ppb
2015-01-309588-801-08103.30 ppb
2015-01-309588-802-08405.60 ppb
2015-01-309588-803-073018.0 ppb
2015-01-309588-804-07403.50 ppb
2015-01-309588-805-07504.00 ppb
2015-01-309588-806-085510.00 ppb
2015-01-309588-807-08003.00 ppb
2015-04-299588-800-082520.0 ppb
2015-04-299588-801-08105.60 ppb
2015-04-299588-802-08457.70 ppb
2015-04-299588-803-073016.0 ppb
2015-04-299588-804-07403.80 ppb
2015-04-299588-805-07504.10 ppb
2015-04-299588-806-090012.0 ppb
2015-04-299588-807-08003.20 ppb
2015-07-299588-800-084019.0 ppb
2015-07-299588-801-08253.10 ppb
2015-07-299588-802-08555.20 ppb
2015-07-299588-803-07452.80 ppb
2015-07-299588-804-07553.30 ppb
2015-07-299588-805-08052.90 ppb
2015-07-299588-806-09158.00 ppb
2015-07-299588-807-08152.40 ppb
2015-08-059588-002-0925ND
2015-08-059588-003-0850ND
2015-08-059588-004-0840ND
2015-08-059588-005-0935ND
2015-08-059588-007-0945ND
2015-08-059588-008-0955ND
2015-08-059588-033-0905ND
2015-08-059588-034-0915ND
2015-08-269588-006-0815ND
2015-10-309588-800-082528.0 ppb
2015-10-309588-801-08103.40 ppb
2015-10-309588-802-084511.0 ppb
2015-10-309588-803-073015.0 ppb
2015-10-309588-804-07406.00 ppb
2015-10-309588-805-07506.40 ppb
2015-10-309588-806-085510.00 ppb
2015-10-309588-807-08003.80 ppb
2015-11-049588-001-0920ND
2015-11-049588-010-1030ND
2016-01-299588-800-08307.20 ppb
2016-01-299588-801-08153.20 ppb
2016-01-299588-802-08456.00 ppb
2016-01-299588-803-073011.0 ppb
2016-01-299588-804-07405.80 ppb
2016-01-299588-805-07505.50 ppb
2016-01-299588-806-09008.20 ppb
2016-01-299588-807-08005.50 ppb
2016-04-299588-800-08302.60 ppb
2016-04-299588-801-08155.40 ppb
2016-04-299588-802-08508.90 ppb
2016-04-299588-803-073017.0 ppb
2016-04-299588-804-07404.70 ppb
2016-04-299588-805-07504.70 ppb
2016-04-299588-806-090512.0 ppb
2016-04-299588-807-08003.20 ppb
2016-07-299588-800-080511.0 ppb
2016-07-299588-801-07502.90 ppb
2016-07-299588-802-082011.0 ppb
2016-07-299588-803-071517.0 ppb
2016-07-299588-804-07203.70 ppb
2016-07-299588-805-07303.90 ppb
2016-07-299588-806-083515.0 ppb
2016-07-299588-807-07402.90 ppb
2016-08-099588-002-0845ND
2016-08-099588-003-0850ND
2016-08-099588-004-0930ND
2016-08-099588-005-0940ND
2016-08-099588-006-1010ND
2016-08-099588-007-1000ND
2016-08-099588-008-0950ND
2016-08-099588-033-0910ND
2016-08-099588-034-0920ND
2016-10-319588-800-082029.0 ppb
2016-10-319588-801-080020.0 ppb
2016-10-319588-802-084515.0 ppb
2016-10-319588-804-073011.0 ppb
2016-10-319588-805-074014.0 ppb
2016-10-319588-806-090023.0 ppb
2016-10-319588-807-075016.0 ppb
2016-11-029588-803-070523.0 ppb
2016-11-079588-001-0815ND
2016-11-079588-010-0830ND
2016-12-159588-800-081014.0 ppb
2016-12-159588-803-07355.00 ppb
2017-01-319588-800-08158.30 ppb
2017-01-319588-801-08004.50 ppb
2017-01-319588-802-08306.10 ppb
2017-01-319588-803-07105.40 ppb
2017-01-319588-804-07254.80 ppb
2017-01-319588-805-07355.20 ppb
2017-01-319588-806-08456.90 ppb
2017-01-319588-807-07504.30 ppb
2017-04-279588-800-10055.70 ppb
2017-04-279588-801-09403.70 ppb
2017-04-279588-802-08404.30 ppb
2017-04-279588-803-09154.00 ppb
2017-04-279588-804-09054.40 ppb
2017-04-279588-805-08554.30 ppb
2017-04-279588-806-08257.50 ppb
2017-04-279588-807-09253.60 ppb
2017-07-289588-800-09407.90 ppb
2017-07-289588-801-10004.70 ppb
2017-07-289588-802-11158.20 ppb
2017-07-289588-803-10355.60 ppb
2017-07-289588-804-10455.60 ppb
2017-07-289588-805-11005.60 ppb
2017-07-289588-806-113011.0 ppb
2017-07-289588-807-10154.30 ppb
2017-08-149588-002-0825ND
2017-08-149588-003-0815ND
2017-08-149588-004-0850ND
2017-08-149588-006-0925ND
2017-08-149588-007-0910ND
2017-08-149588-008-0940ND
2017-08-149588-033-0830ND
2017-08-149588-034-0835ND
2017-10-309588-800-08254.60 ppb
2017-10-309588-801-08102.80 ppb
2017-10-309588-802-08453.00 ppb
2017-10-309588-803-07304.90 ppb
2017-10-309588-804-07407.70 ppb
2017-10-309588-805-07501.90 ppb
2017-10-309588-806-09006.90 ppb
2017-10-309588-807-08003.10 ppb
2017-11-089588-001-0815ND
2017-11-089588-010-0830ND
2018-01-309588-800-083011.0 ppb
2018-01-309588-801-08157.60 ppb
2018-01-309588-802-084510.00 ppb
2018-01-309588-803-073512.0 ppb
2018-01-309588-804-07459.00 ppb
2018-01-309588-805-07555.90 ppb
2018-01-309588-806-090011.0 ppb
2018-02-139588-807-07302.60 ppb
2018-04-309588-800-082013.0 ppb
2018-04-309588-801-08053.70 ppb
2018-04-309588-802-08455.00 ppb
2018-04-309588-803-072011.0 ppb
2018-04-309588-804-07309.80 ppb
2018-04-309588-805-07404.00 ppb
2018-04-309588-806-09055.80 ppb
2018-04-309588-807-07553.00 ppb
2018-05-089588-005-0855ND
2018-07-319588-800-080512.0 ppb
2018-07-319588-801-07502.10 ppb
2018-07-319588-802-08204.00 ppb
2018-07-319588-803-070511.0 ppb
2018-07-319588-804-07152.60 ppb
2018-07-319588-805-07252.70 ppb
2018-07-319588-806-08356.00 ppb
2018-07-319588-807-07402.20 ppb
2018-08-089588-002-0855ND
2018-08-089588-003-0825ND
2018-08-089588-004-0815ND
2018-08-089588-006-0915ND
2018-08-089588-007-0930ND
2018-08-089588-008-0945ND
2018-08-089588-033-0840ND
2018-08-089588-034-0845ND
2018-10-299588-800-08157.70 ppb
2018-10-299588-801-07552.80 ppb
2018-10-299588-802-08353.50 ppb
2018-10-299588-803-07155.70 ppb
2018-10-299588-804-07253.30 ppb
2018-10-299588-805-07352.80 ppb
2018-10-299588-806-09004.80 ppb
2018-10-299588-807-07452.30 ppb
2018-11-069588-010-1120ND
2018-12-059588-001-0805ND
2019-01-309588-800-08105.40 ppb
2019-01-309588-801-07554.80 ppb
2019-01-309588-802-08254.50 ppb
2019-01-309588-803-070515.0 ppb
2019-01-309588-804-07154.40 ppb
2019-01-309588-805-07254.70 ppb
2019-01-309588-806-12155.90 ppb
2019-01-309588-807-07404.80 ppb
2019-04-309588-800-08154.50 ppb
2019-04-309588-801-07553.20 ppb
2019-04-309588-802-08354.60 ppb
2019-04-309588-803-07158.60 ppb
2019-04-309588-804-07253.50 ppb
2019-04-309588-805-07353.30 ppb
2019-04-309588-806-08555.30 ppb
2019-04-309588-807-07453.20 ppb
2019-05-219588-005-0915ND
2019-07-309588-800-07302.90 ppb
2019-07-309588-801-07152.00 ppb
2019-07-309588-802-07503.30 ppb
2019-07-309588-803-06255.40 ppb
2019-07-309588-804-06352.80 ppb
2019-07-309588-805-06452.90 ppb
2019-07-309588-806-08054.90 ppb
2019-07-309588-807-07001.90 ppb
2019-08-199588-003-0940ND
2019-08-199588-004-0950ND
2019-08-199588-006-1010ND
2019-08-199588-007-1020ND
2019-08-199588-008-1030ND
2019-08-199588-033-0915ND
2019-08-199588-034-0905ND
2019-09-259588-002-0710ND
2019-10-309588-800-08006.00 ppb
2019-10-309588-801-07453.50 ppb
2019-10-309588-802-08205.20 ppb
2019-10-309588-803-07006.00 ppb
2019-10-309588-804-07103.90 ppb
2019-10-309588-805-07203.80 ppb
2019-10-309588-806-08355.20 ppb
2019-10-309588-807-07302.90 ppb
2019-11-059588-001-0820ND
2019-11-059588-010-0840ND