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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

South Granville Water and Sewer Authority

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

 

115

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND170ND
2016ND160ND
2017ND180ND
2018ND240ND
2019ND240ND

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
2014-02-1916083-14ND
2014-02-1916084-14ND
2014-02-1916085-14ND
2014-02-1916086-14ND
2014-05-22173146-14ND
2014-05-22173147-14ND
2014-05-22173148-14ND
2014-05-22173149-14ND
2014-08-21173769-14ND
2014-08-21173770-14ND
2014-08-21173771-14ND
2014-08-21173772-14ND
2014-11-24174445-14ND
2014-11-24174446-14ND
2014-11-24174447-14ND
2014-11-24174448-14ND
2015-02-24ND
2015-02-24ND
2015-02-24ND
2015-02-24ND
2015-05-26ND
2015-05-26ND
2015-05-26ND
2015-05-26ND
2015-05-26ND
2015-08-21ND
2015-08-21ND
2015-08-21ND
2015-08-21ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2016-02-18238-16ND
2016-02-18240-16ND
2016-02-18239-16ND
2016-02-18241-16ND
2016-05-19632-16ND
2016-05-19630-16ND
2016-05-19633-16ND
2016-05-19631-16ND
2016-08-111081-16ND
2016-08-111079-16ND
2016-08-111078-16ND
2016-08-111080-16ND
2016-11-171760-16ND
2016-11-171762-16ND
2016-11-171761-16ND
2016-11-171763-16ND
2017-02-15021517148ND
2017-02-15021517149ND
2017-02-15021517150ND
2017-02-15021517151ND
2017-05-25821-17ND
2017-05-25819-17ND
2017-05-25818-17ND
2017-05-25820-17ND
2017-08-231388-17ND
2017-08-231390-17ND
2017-08-231389-17ND
2017-08-231391-17ND
2017-11-132004-17ND
2017-11-132005-17ND
2017-11-13111517140ND
2017-11-13111517139ND
2017-11-13111517137ND
2017-11-13111517138ND
2018-02-14345-18 ND
2018-02-14346-18 ND
2018-02-14347-18 ND
2018-02-14348-18 ND
2018-02-14349-18 ND
2018-02-14350-18 ND
2018-05-14819-18 ND
2018-05-14820-18 ND
2018-05-14821-18 ND
2018-05-14822-18 ND
2018-05-14823-18 ND
2018-05-14824-18 ND
2018-08-131512-18 ND
2018-08-131513-18 ND
2018-08-131514-18 ND
2018-08-131515-18 ND
2018-08-131516-18 ND
2018-08-131517-18 ND
2018-11-132302-18 ND
2018-11-132303-18 ND
2018-11-132304-18 ND
2018-11-132305-18 ND
2018-11-132306-18 ND
2018-11-132307-18 ND
2019-02-132059-19 ND
2019-02-133054-19 ND
2019-02-133055-19 ND
2019-02-133056-19 ND
2019-02-133057-19 ND
2019-02-133058-19 ND
2019-05-083680-19 ND
2019-05-083681-19 ND
2019-05-083682-19 ND
2019-05-083683-19 ND
2019-05-083684-19 ND
2019-05-083685-19 ND
2019-08-144710-19 ND
2019-08-144711-19 ND
2019-08-144712-19 ND
2019-08-144713-19 ND
2019-08-144714-19 ND
2019-08-144715-19 ND
2019-11-125538-19 ND
2019-11-125539-19 ND
2019-11-125540-19 ND
2019-11-125541-19 ND
2019-11-125542-19 ND
2019-11-135537-19 ND