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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Northwestern W and SD - Toledo Svce Area

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

 

109

Samples

0

Samples exceeding legal limit (MCL)

83

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.01 ppb2016ND - 2.10 ppb
20150.813 ppb1612ND - 1.50 ppb
20161.62 ppb20200.700 ppb - 2.80 ppb
20170.565 ppb2011ND - 1.80 ppb
20181.32 ppb2120ND - 2.20 ppb
20190.925 ppb1211ND - 2.40 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
2014-02-12AG644900.800 ppb
2014-02-12AG644910.500 ppb
2014-02-12AG644880.600 ppb
2014-02-12AG644890.500 ppb
2014-05-08AG70337ND
2014-05-08AG70338ND
2014-05-08AG70340ND
2014-05-08AG70339ND
2014-06-13AG731051.40 ppb
2014-06-13AG731061.40 ppb
2014-06-13AG731071.40 ppb
2014-06-13AG731081.40 ppb
2014-08-12AG776261.40 ppb
2014-08-12AG776271.30 ppb
2014-08-12AG776281.000 ppb
2014-08-12AG776291.000 ppb
2014-11-13AG856152.00 ppb
2014-11-13AG856162.00 ppb
2014-11-13AG856172.10 ppb
2014-11-13AG856181.40 ppb
2015-02-10AG905461.20 ppb
2015-02-10AG905471.20 ppb
2015-02-10AG905481.20 ppb
2015-02-10AG905491.30 ppb
2015-05-13AG963681.40 ppb
2015-05-13AG963691.50 ppb
2015-05-13AG963701.40 ppb
2015-05-13AG963711.50 ppb
2015-08-12AH03594ND
2015-08-12AH03595ND
2015-08-12AH03596ND
2015-08-12AH03597ND
2015-11-12AH100300.500 ppb
2015-11-12AH100310.500 ppb
2015-11-12AH100320.700 ppb
2015-11-12AH100330.600 ppb
2016-02-10AH153031.20 ppb
2016-02-10AH153041.30 ppb
2016-02-10AH153050.800 ppb
2016-02-10AH153060.700 ppb
2016-05-11AH216510.700 ppb
2016-05-11AH216520.700 ppb
2016-05-11AH216530.800 ppb
2016-05-11AH216540.700 ppb
2016-08-10AH282182.20 ppb
2016-08-10AH282192.10 ppb
2016-08-10AH282212.10 ppb
2016-08-11AH282202.80 ppb
2016-11-10AH357732.00 ppb
2016-11-10AH357741.90 ppb
2016-11-10AH357752.10 ppb
2016-11-10AH357761.90 ppb
2016-11-10AH357772.00 ppb
2016-11-10AH357782.00 ppb
2016-11-10AH357792.20 ppb
2016-11-10AH357802.20 ppb
2017-02-08AH42995ND
2017-02-08AH42996ND
2017-02-08AH42997ND
2017-02-08AH42998ND
2017-02-08AH42999ND
2017-02-08AH43000ND
2017-02-08AH430010.700 ppb
2017-02-08AH43002ND
2017-05-11AH496480.800 ppb
2017-05-11AH496490.900 ppb
2017-05-11AH49650ND
2017-05-11AH496510.800 ppb
2017-08-09AH570240.500 ppb
2017-08-09AH570250.900 ppb
2017-08-09AH57026ND
2017-08-09AH570271.10 ppb
2017-11-08AH641991.30 ppb
2017-11-08AH642001.30 ppb
2017-11-08AH642011.80 ppb
2017-11-08AH642021.20 ppb
2018-02-08AH698330.900 ppb
2018-02-08AH698341.70 ppb
2018-02-08AH698361.90 ppb
2018-02-12AH698351.20 ppb
2018-05-08AH758550.600 ppb
2018-05-08AH758560.500 ppb
2018-05-08AH758570.600 ppb
2018-05-08AH75858ND
2018-08-09AH828892.20 ppb
2018-08-09AH828902.10 ppb
2018-08-09AH828911.20 ppb
2018-08-09AH828922.00 ppb
2018-11-13AH901461.90 ppb
2018-11-13AH901471.000 ppb
2018-11-13AH901481.000 ppb
2018-11-13AH901491.20 ppb
2018-11-13AH901501.10 ppb
2018-11-13AH901512.10 ppb
2018-11-13AH901521.80 ppb
2018-11-13AH901531.80 ppb
2018-11-13AH901541.000 ppb
2019-02-13AH959022.40 ppb
2019-02-13AH959031.20 ppb
2019-02-13AH959041.000 ppb
2019-02-13AH959050.900 ppb
2019-05-09AI020340.800 ppb
2019-05-09AI020351.000 ppb
2019-05-09AI020360.800 ppb
2019-05-09AI020370.700 ppb
2019-08-09AI087190.800 ppb
2019-08-09AI087200.500 ppb
2019-08-09AI087211.000 ppb
2019-08-09AI08722ND