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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Guernsey County Water Department

NOTE: Guernsey County Water Department purchases water from City of Cambridge which is required to test for bromoform. Sample information shown below was taken by City of Cambridge.

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.

 

98

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND90ND
2014ND80ND
2015ND60ND
2016ND80ND
2017ND80ND

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

NOTE: Guernsey County Water Department purchases water from City of Cambridge which is required to test for bromoform. Sample information shown below was taken by City of Cambridge.

Date Lab ID Result
2012-01-1815701149ND
2012-01-31702024ND
2012-01-31702025ND
2012-01-31702026ND
2012-01-31702027ND
2012-05-01705057ND
2012-05-01705056ND
2012-05-01705054ND
2012-05-01705058ND
2012-07-317080410.570 ppb
2012-07-317080420.570 ppb
2012-07-31708043ND
2012-07-317080450.600 ppb
2012-10-03711006ND
2012-10-03711005ND
2012-10-03711004ND
2012-10-037110030.560 ppb
2013-02-12802150ND
2013-02-12802151ND
2013-02-12802152ND
2013-02-12802153ND
2013-03-06803045ND
2013-05-08805083ND
2013-05-08805084ND
2013-05-08805085ND
2013-05-08805086ND
2013-08-13808170ND
2013-08-13808169ND
2013-08-13808168ND
2013-08-13808167ND
2013-11-12811136ND
2013-11-12811137ND
2013-11-12811139ND
2014-02-04902061ND
2014-02-04902064ND
2014-02-04902063ND
2014-02-04902062ND
2014-05-06905101ND
2014-05-06905100ND
2014-05-06905099ND
2014-05-06905102ND
2014-08-06908055ND
2014-08-06908056ND
2014-08-06908057ND
2014-08-06908054ND
2014-11-05911062ND
2014-11-05911063ND
2014-11-05911064ND
2014-11-05911061ND
2015-02-03102051ND
2015-02-03102052ND
2015-02-031020530.690 ppb
2015-02-03102050ND
2015-05-05105111ND
2015-05-05105112ND
2015-05-05105110ND
2015-05-07105109ND
2015-08-061080990.520 ppb
2015-08-06108101ND
2015-08-061081000.510 ppb
2015-08-06111080980.510 ppb
2015-11-03111065ND
2015-11-03111066ND
2015-11-03111067ND
2015-11-03111068ND
2016-02-02202072ND
2016-02-02202071ND
2016-02-02202070ND
2016-02-02202069ND
2016-05-0316-16411-02ND
2016-05-0316-16411-03ND
2016-05-0316-16411-04ND
2016-05-0316-16411-01ND
2016-08-0216-22138-03ND
2016-08-0216-22138-02ND
2016-08-0216-22138-01ND
2016-08-0216-22138-04ND
2016-11-0716-29036-04ND
2016-11-0716-29036-01ND
2016-11-0716-29036-02ND
2016-11-0716-29036-03ND
2017-02-0717-12210-04ND
2017-02-0717-12210-03ND
2017-02-0717-12210-02ND
2017-02-0717-12210-01ND
2017-05-0217-17675-04ND
2017-05-0217-17675-03ND
2017-05-0217-17675-02ND
2017-05-0217-17675-01ND
2017-08-0717-25015-04ND
2017-08-0717-25015-03ND
2017-08-0717-25015-02ND
2017-08-0717-25015-01ND
2017-10-1017-29729-02ND
2017-11-0717-31699-010.500 ppb
2017-11-0717-31699-02ND
2017-11-0717-31699-03ND
2017-11-0717-31699-04ND