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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Council Bluffs Water Works

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

78

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.397 ppb3215ND - 1.40 ppb
20150.334 ppb3214ND - 1.10 ppb
20160.403 ppb3220ND - 0.900 ppb
20170.491 ppb3217ND - 1.80 ppb
20180.391 ppb3217ND - 1.20 ppb
20190.225 ppb328ND - 1.20 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
2014-01-202029745ND
2014-01-202029746ND
2014-01-2020297470.500 ppb
2014-01-202029748ND
2014-01-2020297490.500 ppb
2014-01-202029750ND
2014-01-202029751ND
2014-01-2020297530.500 ppb
2014-04-2120463090.600 ppb
2014-04-212046311ND
2014-04-212046312ND
2014-04-212046313ND
2014-04-212046314ND
2014-04-212046315ND
2014-04-212046316ND
2014-04-212046317ND
2014-07-2220656791.20 ppb
2014-07-222065680ND
2014-07-222065681ND
2014-07-2220656821.40 ppb
2014-07-2220656831.30 ppb
2014-07-2220656841.40 ppb
2014-07-2220656851.10 ppb
2014-07-2220656861.10 ppb
2014-10-202087473ND
2014-10-2020874740.600 ppb
2014-10-2020874750.600 ppb
2014-10-202087484ND
2014-10-202086547ND
2014-10-2020865520.600 ppb
2014-10-2020865590.700 ppb
2014-10-2020865680.600 ppb
2015-01-19OE210535ND
2015-01-19OE210536ND
2015-01-19OE210537ND
2015-01-19OE2105380.600 ppb
2015-01-19OE210539ND
2015-01-19OE2105400.600 ppb
2015-01-19OE210541ND
2015-01-19OE210542ND
2015-04-08OE229094ND
2015-04-08OE229093ND
2015-04-08OE229096ND
2015-04-08OE229095ND
2015-04-08OE229097ND
2015-04-08OE229098ND
2015-04-08OE229099ND
2015-04-08OE229100ND
2015-07-20OE269583ND
2015-07-20OE269584ND
2015-07-20OE2695850.600 ppb
2015-07-20OE2695860.500 ppb
2015-07-20OE2695880.700 ppb
2015-07-20OE2695870.700 ppb
2015-07-20OE2695900.700 ppb
2015-07-20OE2695890.800 ppb
2015-10-20OE3085370.900 ppb
2015-10-20OE3085360.800 ppb
2015-10-20OE3085401.10 ppb
2015-10-20OE308534ND
2015-10-20OE3085390.900 ppb
2015-10-20OE308535ND
2015-10-20OE3085381.000 ppb
2015-10-20OE3085410.800 ppb
2016-01-19OE3367550.600 ppb
2016-01-19OE336757ND
2016-01-19OE336756ND
2016-01-19OE336759ND
2016-01-19OE336752ND
2016-01-19OE336753ND
2016-01-19OE3367540.600 ppb
2016-01-19OE3367580.500 ppb
2016-04-19OE3683460.600 ppb
2016-04-19OE368350ND
2016-04-19OE368345ND
2016-04-19OE3683510.700 ppb
2016-04-19OE3683470.600 ppb
2016-04-19OE3683480.700 ppb
2016-04-19OE3683490.700 ppb
2016-04-19OE3683520.700 ppb
2016-07-18OE4030990.600 ppb
2016-07-18OE403098ND
2016-07-18OE403096ND
2016-07-18OE403092ND
2016-07-18OE4030970.700 ppb
2016-07-18OE4030950.700 ppb
2016-07-18OE403093ND
2016-07-18OE4030940.600 ppb
2016-10-24OE4451130.800 ppb
2016-10-24OE4451120.500 ppb
2016-10-24OE4451070.900 ppb
2016-10-24OE4451060.600 ppb
2016-10-24OE4451090.500 ppb
2016-10-24OE4451100.600 ppb
2016-10-24OE445111ND
2016-10-24OE4451080.700 ppb
2017-01-30OE475573ND
2017-01-30OE475574ND
2017-01-30OE4755750.800 ppb
2017-01-30OE475577ND
2017-01-30OE475576ND
2017-01-30OE4755780.600 ppb
2017-01-30OE475579ND
2017-01-30OE475580ND
2017-04-17OE503404ND
2017-04-17OE5034060.600 ppb
2017-04-17OE5034070.600 ppb
2017-04-17OE5034080.500 ppb
2017-04-17OE5034090.500 ppb
2017-04-17OE503402ND
2017-04-17OE503403ND
2017-04-17OE503405ND
2017-07-17OE5387791.60 ppb
2017-07-17OE5387821.80 ppb
2017-07-17OE538781ND
2017-07-17OE5387830.800 ppb
2017-07-17OE538780ND
2017-07-17OE5387851.60 ppb
2017-07-17OE5387861.50 ppb
2017-07-17OE5387841.60 ppb
2017-10-23OE5816751.000 ppb
2017-10-23OE581676ND
2017-10-23OE5816770.500 ppb
2017-10-23OE5816780.500 ppb
2017-10-23OE581679ND
2017-10-23OE5816800.600 ppb
2017-10-23OE5816820.600 ppb
2017-10-23OE581681ND
2018-01-23OE614070ND
2018-01-23OE614071ND
2018-01-23OE6140720.900 ppb
2018-01-23OE6140731.20 ppb
2018-01-23OE6140740.900 ppb
2018-01-23OE6140750.600 ppb
2018-01-23OE6140760.800 ppb
2018-01-23OE6140770.800 ppb
2018-04-23OE649005ND
2018-04-23OE649006ND
2018-04-23OE6490070.700 ppb
2018-04-23OE6490080.700 ppb
2018-04-23OE649009ND
2018-04-23OE649010ND
2018-04-23OE6490110.600 ppb
2018-04-23OE649012ND
2018-07-23OE687573ND
2018-07-23OE687574ND
2018-07-23OE6875750.700 ppb
2018-07-23OE6875760.800 ppb
2018-07-23OE6875770.600 ppb
2018-07-23OE6875780.800 ppb
2018-07-23OE6875790.500 ppb
2018-07-23OE6875800.700 ppb
2018-10-22OE730488ND
2018-10-22OE730489ND
2018-10-22OE730490ND
2018-10-22OE730491ND
2018-10-22OE7304920.600 ppb
2018-10-22OE730493ND
2018-10-22OE730494ND
2018-10-22OE7304950.600 ppb
2019-01-22OE763224ND
2019-01-22OE7632260.900 ppb
2019-01-22OE7632271.20 ppb
2019-01-22OE7632281.000 ppb
2019-01-22OE7632301.000 ppb
2019-01-22OE7632311.000 ppb
2019-01-31OE765895ND
2019-01-31OE7658961.000 ppb
2019-04-22OE797997ND
2019-04-22OE797998ND
2019-04-22OE797999ND
2019-04-22OE798000ND
2019-04-22OE798001ND
2019-04-22OE798002ND
2019-04-22OE798003ND
2019-04-22OE798004ND
2019-07-15OE834887ND
2019-07-15OE834888ND
2019-07-15OE834889ND
2019-07-15OE8348900.600 ppb
2019-07-15OE834891ND
2019-07-15OE8348920.500 ppb
2019-07-15OE834893ND
2019-07-15OE834894ND
2019-10-14OE879353ND
2019-10-14OE879354ND
2019-10-14OE879355ND
2019-10-14OE879356ND
2019-10-14OE879357ND
2019-10-14OE879358ND
2019-10-14OE879359ND
2019-10-14OE879360ND