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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Ashtabula County Water System

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

 

97

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
20150.0313 ppb161ND - 0.500 ppb
20160.0375 ppb161ND - 0.600 ppb
20170.241 ppb176ND - 0.900 ppb
20180.0313 ppb161ND - 0.500 ppb
20190.138 ppb164ND - 0.700 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
2014-01-09AE20582ND
2014-01-09AE20583ND
2014-01-09AE20584ND
2014-01-09AE20581ND
2014-04-08AE29310ND
2014-04-08AE29311ND
2014-04-08AE29312ND
2014-04-08AE29313ND
2014-07-08AE39819ND
2014-07-08AE39820ND
2014-07-08AE39821ND
2014-07-08AE39822ND
2014-10-08AE52567ND
2014-10-08AE52569ND
2014-10-08AE52568ND
2014-10-08AE52566ND
2015-01-13AE62694ND
2015-01-13AE62695ND
2015-01-13AE62696ND
2015-01-13AE62697ND
2015-04-08AE71830ND
2015-04-08AE71827ND
2015-04-08AE71828ND
2015-04-08AE71829ND
2015-07-08AE82910ND
2015-07-08AE82912ND
2015-07-08AE82911ND
2015-07-08AE82909ND
2015-10-08AE95139ND
2015-10-08AE95140ND
2015-10-08AE95141ND
2015-10-08AE951380.500 ppb
2016-01-12AF048540.600 ppb
2016-01-12AF04855ND
2016-01-12AF04856ND
2016-01-12AF04857ND
2016-04-12AF13136ND
2016-04-12AF13137ND
2016-04-12AF13135ND
2016-04-12AF13134ND
2016-07-12AF21910ND
2016-07-12AF21911ND
2016-07-12AF21912ND
2016-07-12AF21913ND
2016-10-12AF32803ND
2016-10-12AF32804ND
2016-10-12AF32805ND
2016-10-12AF32806ND
2017-01-11AF40513ND
2017-01-11AF405100.600 ppb
2017-01-11AF40511ND
2017-01-11AF405120.500 ppb
2017-04-12AF48485ND
2017-04-12AF48486ND
2017-04-12AF48487ND
2017-04-12AF48488ND
2017-07-12AF57101ND
2017-07-12AF57102ND
2017-07-12AF57103ND
2017-07-12AF57104ND
2017-07-25AF58461ND
2017-10-11AF663980.700 ppb
2017-10-11AF664000.900 ppb
2017-10-11AF663990.600 ppb
2017-10-11AF663970.800 ppb
2018-01-10AF73553ND
2018-01-10AF73554ND
2018-01-10AF73555ND
2018-01-10AF73556ND
2018-04-10AF81342ND
2018-04-10AF81343ND
2018-04-10AF81344ND
2018-04-10AF81345ND
2018-07-11AF897070.500 ppb
2018-07-11AF89710ND
2018-07-11AF89708ND
2018-07-11AF89709ND
2018-10-10AF98291ND
2018-10-10AF98292ND
2018-10-10AF98293ND
2018-10-10AF98294ND
2019-01-09AG06091ND
2019-01-09AG06092ND
2019-01-09AG06093ND
2019-01-09AG06094ND
2019-04-10AG14167ND
2019-04-10AG14169ND
2019-04-10AG14168ND
2019-04-10AG14166ND
2019-07-10AG23917ND
2019-07-10AG23918ND
2019-07-10AG23919ND
2019-07-10AG23920ND
2019-10-09AG355980.700 ppb
2019-10-09AG355990.500 ppb
2019-10-09AG356000.500 ppb
2019-10-09AG356010.500 ppb