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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Sylvania City

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)

76

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.894 ppb1613ND - 1.70 ppb
20150.763 ppb1612ND - 1.40 ppb
20161.33 ppb16160.600 ppb - 2.00 ppb
20170.944 ppb1614ND - 1.70 ppb
20181.47 ppb16160.800 ppb - 2.40 ppb
20190.683 ppb126ND - 2.00 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
2014-02-12AG644770.700 ppb
2014-02-12AG644760.900 ppb
2014-02-12AG644790.700 ppb
2014-02-12AG64478ND
2014-05-08AG70284ND
2014-05-08AG702850.600 ppb
2014-05-08AG702860.500 ppb
2014-05-08AG70283ND
2014-08-14AG779791.10 ppb
2014-08-14AG779801.50 ppb
2014-08-14AG779811.000 ppb
2014-08-14AG779781.10 ppb
2014-11-13AG856021.40 ppb
2014-11-13AG856031.50 ppb
2014-11-13AG856011.60 ppb
2014-11-13AG856001.70 ppb
2015-02-11AG907081.30 ppb
2015-02-11AG907091.30 ppb
2015-02-11AG907101.40 ppb
2015-02-11AG907111.30 ppb
2015-05-13AG963600.900 ppb
2015-05-13AG963611.20 ppb
2015-05-13AG963621.20 ppb
2015-05-13AG963631.20 ppb
2015-08-13AH03601ND
2015-08-13AH03604ND
2015-08-13AH03602ND
2015-08-13AH03603ND
2015-11-16AH101130.600 ppb
2015-11-16AH101140.600 ppb
2015-11-16AH101150.600 ppb
2015-11-16AH101160.600 ppb
2016-02-08AH150650.600 ppb
2016-02-08AH150661.000 ppb
2016-02-08AH150670.800 ppb
2016-02-08AH150680.800 ppb
2016-05-11AH215900.700 ppb
2016-05-11AH215930.700 ppb
2016-05-11AH215920.600 ppb
2016-05-11AH215910.700 ppb
2016-08-09AH281362.00 ppb
2016-08-09AH281371.90 ppb
2016-08-09AH281381.80 ppb
2016-08-09AH281391.90 ppb
2016-11-08AH354411.90 ppb
2016-11-08AH354402.00 ppb
2016-11-08AH354381.90 ppb
2016-11-08AH354391.90 ppb
2017-02-13AH431120.800 ppb
2017-02-13AH431130.600 ppb
2017-02-13AH43114ND
2017-02-13AH43111ND
2017-05-09AH493350.800 ppb
2017-05-09AH493360.800 ppb
2017-05-09AH493370.800 ppb
2017-05-09AH493380.800 ppb
2017-08-10AH573101.10 ppb
2017-08-10AH573091.70 ppb
2017-08-10AH573081.20 ppb
2017-08-10AH573071.10 ppb
2017-11-08AH642091.40 ppb
2017-11-08AH642101.40 ppb
2017-11-08AH642111.20 ppb
2017-11-08AH642121.40 ppb
2018-02-08AH697351.50 ppb
2018-02-08AH697361.80 ppb
2018-02-08AH697371.80 ppb
2018-02-08AH697381.80 ppb
2018-05-10AH760470.900 ppb
2018-05-10AH760450.900 ppb
2018-05-10AH760440.800 ppb
2018-05-10AH760461.10 ppb
2018-08-13AH829341.30 ppb
2018-08-13AH829351.000 ppb
2018-08-13AH829361.30 ppb
2018-08-13AH829371.40 ppb
2018-11-09AH900141.80 ppb
2018-11-09AH900151.80 ppb
2018-11-09AH900162.40 ppb
2018-11-09AH900171.90 ppb
2019-02-13AH959351.60 ppb
2019-02-13AH959371.70 ppb
2019-02-13AH959361.000 ppb
2019-02-13AH959342.00 ppb
2019-05-13AI021281.000 ppb
2019-05-13AI021290.900 ppb
2019-05-13AI02130ND
2019-05-13AI02131ND
2019-08-12AI08849ND
2019-08-12AI08850ND
2019-08-12AI08851ND
2019-08-12AI08852ND