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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Ankeny

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

 

116

Samples

0

Samples exceeding legal limit (MCL)

51

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.41 ppb1612ND - 6.00 ppb
20151.36 ppb165ND - 10.1 ppb
20160.738 ppb163ND - 6.40 ppb
20171.18 ppb3213ND - 5.20 ppb
20181.41 ppb2017ND - 6.00 ppb
20190.844 ppb1610ND - 4.40 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
2014-02-2420391995.60 ppb
2014-02-2420392003.80 ppb
2014-02-2420392012.00 ppb
2014-02-2420392022.30 ppb
2014-05-122050363ND
2014-05-122050364ND
2014-05-122050365ND
2014-05-122050366ND
2014-08-0320690395.80 ppb
2014-08-0320690401.50 ppb
2014-08-0320690421.70 ppb
2014-08-0320690446.00 ppb
2014-11-1120907602.50 ppb
2014-11-1120907612.40 ppb
2014-11-1120907622.50 ppb
2014-11-1120907632.50 ppb
2015-02-042944092.10 ppb
2015-02-04294410ND
2015-02-04294411ND
2015-02-04294412ND
2015-05-04297713ND
2015-05-04297709ND
2015-05-04297710ND
2015-05-04297711ND
2015-08-0330171110.1 ppb
2015-08-033017123.40 ppb
2015-08-033017143.40 ppb
2015-08-03301716ND
2015-11-16308282ND
2015-11-16308283ND
2015-11-163082842.80 ppb
2015-11-16308285ND
2016-02-24311695ND
2016-02-24311696ND
2016-02-24311697ND
2016-02-24311698ND
2016-05-25314819ND
2016-05-25314820ND
2016-05-25314821ND
2016-05-25314822ND
2016-08-033176056.40 ppb
2016-08-033176062.50 ppb
2016-08-033176072.90 ppb
2016-08-03317608ND
2016-11-07320933ND
2016-11-07320934ND
2016-11-07320935ND
2016-11-07320936ND
2017-02-01323768ND
2017-02-01323769ND
2017-02-01323770ND
2017-02-01323771ND
2017-02-01323772ND
2017-02-01323773ND
2017-02-01323774ND
2017-02-01323775ND
2017-05-10327198ND
2017-05-10327199ND
2017-05-10327200ND
2017-05-10327201ND
2017-05-10327202ND
2017-05-10327203ND
2017-05-10327204ND
2017-05-10327205ND
2017-08-023305125.20 ppb
2017-08-023305132.00 ppb
2017-08-02330514ND
2017-08-023305152.40 ppb
2017-08-023305163.50 ppb
2017-08-023305172.90 ppb
2017-08-023305183.50 ppb
2017-08-023305193.00 ppb
2017-11-013340102.70 ppb
2017-11-013340112.70 ppb
2017-11-01334012ND
2017-11-013340132.20 ppb
2017-11-013340142.80 ppb
2017-11-013340152.50 ppb
2017-11-013340162.50 ppb
2017-11-01334017ND
2018-02-013372451.90 ppb
2018-02-013372462.00 ppb
2018-02-013372470.800 ppb
2018-02-013372480.400 ppb
2018-02-013372493.10 ppb
2018-02-013372501.40 ppb
2018-02-013372516.00 ppb
2018-02-013372522.50 ppb
2018-05-093406570.300 ppb
2018-05-093406580.500 ppb
2018-05-093406590.1000 ppb
2018-05-093406600.300 ppb
2018-08-02OE693167ND
2018-08-02OE6931680.900 ppb
2018-08-02OE6931694.00 ppb
2018-08-02OE6931731.80 ppb
2018-11-07OE7371651.20 ppb
2018-11-07OE7371660.900 ppb
2018-11-07OE737168ND
2018-11-14OE739930ND
2019-02-05OE767242ND
2019-02-05OE767243ND
2019-02-05OE7672440.500 ppb
2019-02-05OE7672450.700 ppb
2019-05-01OE801882ND
2019-05-01OE801883ND
2019-05-01OE801884ND
2019-05-01OE801885ND
2019-08-13OE8490901.50 ppb
2019-08-13OE8490911.80 ppb
2019-08-13OE8490923.00 ppb
2019-08-13OE8490934.40 ppb
2019-11-143602070.400 ppb
2019-11-143602080.300 ppb
2019-11-143602090.700 ppb
2019-11-143602100.200 ppb