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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Ottawa County Regional 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.

MORE ABOUT THIS CONTAMINANT

 

98

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.606 ppb179ND - 2.30 ppb
20150.271 ppb178ND - 0.700 ppb
20160.418 ppb178ND - 1.20 ppb
2017ND170ND
20180.418 ppb178ND - 1.000 ppb
20190.0385 ppb131ND - 0.500 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
2014-02-04AG64220ND
2014-02-04AG642190.500 ppb
2014-02-04AG64222ND
2014-02-04AG64221ND
2014-04-09AG68134ND
2014-05-01AG69674ND
2014-05-01AG69675ND
2014-05-01AG69676ND
2014-05-01AG69677ND
2014-08-01AG772591.30 ppb
2014-08-01AG772601.70 ppb
2014-08-01AG772611.30 ppb
2014-08-01AG772622.30 ppb
2014-11-04AG845530.700 ppb
2014-11-04AG845540.800 ppb
2014-11-04AG845520.900 ppb
2014-11-04AG845510.800 ppb
2015-02-03AG901710.500 ppb
2015-02-03AG901720.500 ppb
2015-02-03AG901730.700 ppb
2015-02-03AG901740.500 ppb
2015-04-07AG94048ND
2015-05-04AG958450.600 ppb
2015-05-04AG958460.700 ppb
2015-05-04AG958470.600 ppb
2015-05-04AG958480.500 ppb
2015-08-04AH02911ND
2015-08-04AH02913ND
2015-08-04AH02910ND
2015-08-04AH02912ND
2015-11-02AH09491ND
2015-11-02AH09492ND
2015-11-02AH09493ND
2015-11-02AH09494ND
2016-02-01AH14954ND
2016-02-01AH14955ND
2016-02-01AH14956ND
2016-02-01AH14957ND
2016-04-06AH18797ND
2016-05-02AH21112ND
2016-05-02AH21113ND
2016-05-02AH21114ND
2016-05-02AH21115ND
2016-08-01AH274060.600 ppb
2016-08-01AH274071.10 ppb
2016-08-01AH274081.20 ppb
2016-08-01AH274091.10 ppb
2016-11-01AH349930.600 ppb
2016-11-01AH349920.900 ppb
2016-11-01AH349900.800 ppb
2016-11-01AH349910.800 ppb
2017-02-07AH42849ND
2017-02-07AH42850ND
2017-02-07AH42851ND
2017-02-07AH42852ND
2017-04-05AH46499ND
2017-05-02AH48997ND
2017-05-02AH48998ND
2017-05-02AH48999ND
2017-05-02AH49000ND
2017-08-01AH56164ND
2017-08-01AH56165ND
2017-08-01AH56163ND
2017-08-01AH56162ND
2017-11-07AH63880ND
2017-11-07AH63881ND
2017-11-07AH63882ND
2017-11-07AH63883ND
2018-02-05AH69593ND
2018-02-05AH69594ND
2018-02-05AH69595ND
2018-02-05AH69596ND
2018-04-11AH73992ND
2018-05-01AH75417ND
2018-05-01AH75420ND
2018-05-01AH75418ND
2018-05-01AH75419ND
2018-08-07AH826430.900 ppb
2018-08-07AH826440.700 ppb
2018-08-07AH826451.000 ppb
2018-08-07AH826460.600 ppb
2018-11-06AH897791.000 ppb
2018-11-06AH897800.900 ppb
2018-11-06AH897811.000 ppb
2018-11-06AH897821.000 ppb
2019-02-05AH95448ND
2019-02-05AH95451ND
2019-02-05AH95450ND
2019-02-05AH95449ND
2019-04-10AH99819ND
2019-05-07AI01791ND
2019-05-07AI01792ND
2019-05-07AI01793ND
2019-05-07AI01794ND
2019-08-06AI08617ND
2019-08-06AI086180.500 ppb
2019-08-06AI08619ND
2019-08-06AI08620ND