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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Three Valleys Municipal Water District

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.

 

102

Samples

0

Samples exceeding legal limit (MCL)

83

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20125.97 ppb1413ND - 12.5 ppb
20136.30 ppb2120ND - 11.2 ppb
201410.4 ppb1817ND - 13.1 ppb
201512.8 ppb13138.82 ppb - 21.0 ppb
20168.70 ppb1817ND - 16.6 ppb
20170.0889 ppb183ND - 0.543 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
2012-06-139469-800-09214.05 ppb
2012-06-139469-801-10294.13 ppb
2012-06-139469-802-09364.74 ppb
2012-06-139469-803-09503.80 ppb
2012-07-183761-002-10153.30 ppb
2012-07-183761-004-0752ND
2012-09-119469-800-00003.71 ppb
2012-09-119469-801-00003.97 ppb
2012-09-119469-802-00004.30 ppb
2012-09-119469-803-00004.34 ppb
2012-12-129469-800-000012.5 ppb
2012-12-129469-801-000011.9 ppb
2012-12-129469-802-000011.4 ppb
2012-12-129469-803-000011.4 ppb
2013-03-059469-800-08452.89 ppb
2013-03-059469-801-10203.13 ppb
2013-03-059469-802-10452.93 ppb
2013-03-059469-803-09303.05 ppb
2013-06-119469-800-07563.06 ppb
2013-06-119469-801-09334.06 ppb
2013-06-119469-802-08244.54 ppb
2013-06-119469-803-08464.58 ppb
2013-07-163761-002-11004.20 ppb
2013-07-163761-004-1005ND
2013-09-179469-800-000011.2 ppb
2013-09-179469-801-00007.86 ppb
2013-09-179469-802-00008.24 ppb
2013-09-179469-803-00008.48 ppb
2013-10-213761-002-10307.40 ppb
2013-11-193761-002-09509.00 ppb
2013-11-199469-002-09508.56 ppb
2013-12-179469-800-07499.52 ppb
2013-12-179469-801-090510.00 ppb
2013-12-179469-802-081510.5 ppb
2013-12-179469-803-08299.09 ppb
2014-03-119469-800-07549.96 ppb
2014-03-119469-801-093211.0 ppb
2014-03-119469-802-082410.8 ppb
2014-03-119469-803-085011.3 ppb
2014-06-109469-800-08009.95 ppb
2014-06-109469-801-09009.92 ppb
2014-06-109469-802-083010.8 ppb
2014-06-109469-803-084510.5 ppb
2014-08-263761-002-10208.60 ppb
2014-08-263761-004-1000ND
2014-09-169469-800-085010.5 ppb
2014-09-169469-801-095411.0 ppb
2014-09-169469-802-090811.4 ppb
2014-09-169469-803-092611.4 ppb
2014-12-099469-800-075611.9 ppb
2014-12-099469-801-091312.7 ppb
2014-12-099469-802-081712.2 ppb
2014-12-099469-803-083613.1 ppb
2015-03-109469-800-07369.65 ppb
2015-03-109469-801-083010.1 ppb
2015-03-109469-802-075011.1 ppb
2015-03-109469-803-080011.3 ppb
2015-06-099469-800-074017.8 ppb
2015-06-099469-801-083020.6 ppb
2015-06-099469-802-075219.2 ppb
2015-06-099469-803-080621.0 ppb
2015-07-143761-002-08409.00 ppb
2015-12-159469-800-07419.26 ppb
2015-12-159469-801-08248.82 ppb
2015-12-159469-802-08379.15 ppb
2015-12-159469-803-07559.10 ppb
2016-03-153761-004-0915ND
2016-03-159469-800-073010.00 ppb
2016-03-159469-801-080010.5 ppb
2016-03-159469-802-074510.6 ppb
2016-03-159469-803-082010.3 ppb
2016-06-219469-800-07237.31 ppb
2016-06-219469-801-08107.22 ppb
2016-06-219469-802-08397.85 ppb
2016-06-219469-803-07497.34 ppb
2016-07-193761-002-09304.10 ppb
2016-09-139469-800-07273.50 ppb
2016-09-139469-801-08224.12 ppb
2016-09-139469-802-07463.91 ppb
2016-09-139469-803-08034.08 ppb
2016-12-139469-800-074816.6 ppb
2016-12-139469-801-085416.2 ppb
2016-12-139469-802-080216.6 ppb
2016-12-139469-803-081416.4 ppb
2017-03-213761-004-1100ND
2017-03-219469-800-0938ND
2017-03-219469-801-0802ND
2017-03-219469-802-0820ND
2017-03-219469-803-0848ND
2017-06-219469-800-07320.543 ppb
2017-06-219469-801-08320.538 ppb
2017-06-219469-802-0745ND
2017-06-219469-803-08070.520 ppb
2017-07-183761-002-0830ND
2017-09-129469-800-0733ND
2017-09-129469-801-0820ND
2017-09-129469-802-0751ND
2017-09-129469-803-0801ND
2017-12-219469-800-0738ND
2017-12-219469-801-0815ND
2017-12-219469-802-0815ND
2017-12-219469-803-0748ND