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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Clive Water Department

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

85

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.21 ppb1615ND - 1.80 ppb
20131.30 ppb1611ND - 2.70 ppb
20141.42 ppb1612ND - 4.00 ppb
20151.11 ppb16160.600 ppb - 1.70 ppb
20161.26 ppb16160.600 ppb - 2.30 ppb
20173.26 ppb1615ND - 11.0 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
2012-01-0418795551.60 ppb
2012-01-0418795511.30 ppb
2012-01-0418795531.30 ppb
2012-01-0418795541.30 ppb
2012-04-1118976981.000 ppb
2012-04-1118976971.10 ppb
2012-04-1118976961.000 ppb
2012-04-1118976940.800 ppb
2012-07-091916626ND
2012-07-0919166341.30 ppb
2012-07-0919166241.000 ppb
2012-07-0919166251.000 ppb
2012-10-1519392551.70 ppb
2012-10-1519392541.80 ppb
2012-10-1519392531.80 ppb
2012-10-1519392521.40 ppb
2013-01-2219587672.50 ppb
2013-01-2219586311.80 ppb
2013-01-2219586302.10 ppb
2013-01-2219586372.00 ppb
2013-04-291974400ND
2013-04-291974397ND
2013-04-291974395ND
2013-04-291974383ND
2013-06-101983791ND
2013-07-0919884632.30 ppb
2013-07-0919884652.70 ppb
2013-07-0919884642.50 ppb
2013-10-0320092111.10 ppb
2013-10-0320092121.30 ppb
2013-10-0320092131.40 ppb
2013-10-0320092141.10 ppb
2014-01-0820283341.60 ppb
2014-01-0820283332.30 ppb
2014-01-0820283322.30 ppb
2014-01-0820283312.20 ppb
2014-04-0320437130.900 ppb
2014-04-0320437140.800 ppb
2014-04-0320437150.600 ppb
2014-04-0320437160.700 ppb
2014-07-072060862ND
2014-07-072060857ND
2014-07-072060856ND
2014-07-072063765ND
2014-10-0320849831.90 ppb
2014-10-0320849852.10 ppb
2014-10-0320849823.30 ppb
2014-10-0320849814.00 ppb
2015-01-05OE2083971.40 ppb
2015-01-05OE2083961.10 ppb
2015-01-05OE2083981.000 ppb
2015-01-05OE2083991.000 ppb
2015-04-02OE2265611.70 ppb
2015-04-02OE2265621.60 ppb
2015-04-02OE2265631.50 ppb
2015-04-02OE2265601.60 ppb
2015-07-07OE2636950.600 ppb
2015-07-07OE2636980.600 ppb
2015-07-07OE2636970.800 ppb
2015-07-07OE2636960.900 ppb
2015-10-06OE3023440.900 ppb
2015-10-06OE3023430.900 ppb
2015-10-06OE3023411.10 ppb
2015-10-06OE3023421.10 ppb
2016-01-04OE3317171.10 ppb
2016-01-04OE3317161.10 ppb
2016-01-04OE3317151.000 ppb
2016-01-04OE3317121.10 ppb
2016-04-01OE3607281.10 ppb
2016-04-01OE3607291.20 ppb
2016-04-01OE3607271.20 ppb
2016-04-01OE3607261.20 ppb
2016-07-12OE3998221.60 ppb
2016-07-12OE3998202.20 ppb
2016-07-12OE3998192.30 ppb
2016-07-12OE3998211.80 ppb
2016-10-03OE4357260.600 ppb
2016-10-03OE4357290.600 ppb
2016-10-03OE4357281.20 ppb
2016-10-03OE4357270.900 ppb
2017-01-03OE4664221.000 ppb
2017-01-03OE4664241.000 ppb
2017-01-03OE4664231.10 ppb
2017-01-03OE4664250.800 ppb
2017-04-03OE4968710.900 ppb
2017-04-03OE4968730.900 ppb
2017-04-06OE498828ND
2017-04-06OE4988270.600 ppb
2017-07-05OE5323091.70 ppb
2017-07-05OE5323101.40 ppb
2017-07-05OE5323121.60 ppb
2017-07-05OE5323111.70 ppb
2017-10-02OE57222810.00 ppb
2017-10-02OE5722308.40 ppb
2017-10-02OE57223111.0 ppb
2017-10-02OE57222910.00 ppb