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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Gahanna City PWS

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.744 ppb169ND - 2.20 ppb
20150.900 ppb1611ND - 3.10 ppb
20160.394 ppb168ND - 1.30 ppb
20170.475 ppb169ND - 1.20 ppb
2018ND160ND
20190.125 ppb123ND - 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
2014-02-122014-28832-THM2.00 ppb
2014-02-122014-28831-THM1.30 ppb
2014-02-122014-28834-THM2.20 ppb
2014-02-122014-28833-THM1.90 ppb
2014-05-142014-31263-THMND
2014-05-142014-31264-THMND
2014-05-142014-31265-THM0.500 ppb
2014-05-142014-31266-THMND
2014-08-132014-33969-THM1.000 ppb
2014-08-132014-33970-THM1.000 ppb
2014-08-132014-33971-THM1.000 ppb
2014-08-132014-33972-THM1.000 ppb
2014-11-122014-36588-THMND
2014-11-122014-36589-THMND
2014-11-122014-36587-THMND
2014-11-122014-36586-THMND
2015-02-112015-38952-THM0.600 ppb
2015-02-112015-38953-THM1.000 ppb
2015-02-112015-38954-THM1.000 ppb
2015-02-112015-38969-THM1.20 ppb
2015-05-132015-41536-THMND
2015-05-132015-41537-THMND
2015-05-132015-41538-THMND
2015-05-132015-41539-THMND
2015-08-112015-44309-THMND
2015-08-112015-44312-THM0.700 ppb
2015-08-112015-44310-THM0.600 ppb
2015-08-112015-44311-THM0.600 ppb
2015-11-112015-46991-THM1.60 ppb
2015-11-112015-46992-THM3.10 ppb
2015-11-112015-46993-THM2.10 ppb
2015-11-112015-46994-THM1.90 ppb
2016-02-102016-49375-THMND
2016-02-102016-49376-THM0.800 ppb
2016-02-102016-49377-THM1.20 ppb
2016-02-102016-49378-THM1.30 ppb
2016-05-112016-52083-THMND
2016-05-112016-52086-THMND
2016-05-112016-52085-THMND
2016-05-112016-52084-THM0.500 ppb
2016-08-102016-55025-THMND
2016-08-102016-55026-THMND
2016-08-102016-55027-THM0.700 ppb
2016-08-102016-55028-THM0.700 ppb
2016-11-092016-57941-THM0.600 ppb
2016-11-092016-57940-THM0.500 ppb
2016-11-092016-57938-THMND
2016-11-092016-57939-THMND
2017-02-082017-60492-THMND
2017-02-082017-60493-THMND
2017-02-082017-60494-THM0.600 ppb
2017-02-082017-60491-THMND
2017-05-102017-63312-THMND
2017-05-102017-63313-THMND
2017-05-102017-63314-THMND
2017-05-102017-63315-THMND
2017-08-092017-66184-THM1.10 ppb
2017-08-092017-66183-THM1.10 ppb
2017-08-092017-66182-THM0.800 ppb
2017-08-092017-66181-THM0.600 ppb
2017-11-082017-68949-THM0.500 ppb
2017-11-082017-68950-THM0.800 ppb
2017-11-082017-68951-THM1.20 ppb
2017-11-082017-68952-THM0.900 ppb
2018-02-062018-71461-THMND
2018-02-062018-71462-THMND
2018-02-062018-71463-THMND
2018-02-062018-71464-THMND
2018-05-092018-75425-THMND
2018-05-092018-75423-THMND
2018-05-092018-75422-THMND
2018-05-092018-75424-THMND
2018-08-082018-80649-THMND
2018-08-082018-80650-THMND
2018-08-082018-80651-THMND
2018-08-082018-80652-THMND
2018-11-142018-85664-THMND
2018-11-142018-85665-THMND
2018-11-142018-85666-THMND
2018-11-142018-85667-THMND
2019-02-132019-89013-THMND
2019-02-132019-89015-THM0.500 ppb
2019-02-132019-89014-THMND
2019-02-132019-89012-THMND
2019-05-082019-92975-THMND
2019-05-082019-92976-THMND
2019-05-082019-92977-THM0.500 ppb
2019-05-082019-92978-THM0.500 ppb
2019-08-142019-97780-THMND
2019-08-142019-97781-THMND
2019-08-142019-97782-THMND
2019-08-142019-97783-THMND