Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Norfolk Naval Shipyard

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
20150.0313 ppb161ND - 0.500 ppb
2016ND120ND
2017ND160ND
2018ND280ND
2019ND150ND

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
2014-05-0614-06784THMND
2014-11-0614-16895-THMND
2014-11-0614-16896-THMND
2014-11-0614-16894-THMND
2014-11-0614-16893-THMND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-05-07460013-JAMES R.0.500 ppb
2015-05-07460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2016-05-0616-07933-THMND
2016-05-0616-07935-THMND
2016-05-0616-07934-THMND
2016-05-0616-07936-THMND
2016-08-0516-13906-THMND
2016-08-0516-13903-THMND
2016-08-0516-13904-THMND
2016-08-0516-13905-THMND
2016-11-1416-20419-THMND
2016-11-1416-20417-THMND
2016-11-1416-20418-THMND
2016-11-1416-20416-THMND
2017-02-1017-02505-THMND
2017-02-1017-02504-THMND
2017-02-1017-02503-THMND
2017-02-1017-02508-THMND
2017-05-0417-07612-THMND
2017-05-0417-07613-THMND
2017-05-0417-07614-THMND
2017-05-0417-07615-THMND
2017-08-1017-14133-THMND
2017-08-1017-14134-THMND
2017-08-1017-14135-THMND
2017-08-1017-14136-THMND
2017-11-1417-21285-THMND
2017-11-1417-21283-THMND
2017-11-1417-21286-THMND
2017-11-1417-21284-THMND
2018-02-1318-02578TTHMND
2018-02-1318-02575TTHMND
2018-02-1318-02574TTHMND
2018-02-1318-02573TTHMND
2018-05-1018-08252-THM-DUPND
2018-05-1018-08251-THM-DUPND
2018-05-1018-08251-THMND
2018-05-1018-08250-THM-DUPND
2018-05-1018-08250-THMND
2018-05-1018-08249-THM-DUPND
2018-05-1018-08249-THMND
2018-05-1018-08252-THMND
2018-08-0118-15210-THM-DUPND
2018-08-0118-15210-THMND
2018-08-0118-15209-THM-DUPND
2018-08-0118-15209-THMND
2018-08-0118-15208-THM-DUPND
2018-08-0118-15208-THMND
2018-08-0118-15217-THMND
2018-08-0118-15217-THM-DUPND
2018-11-0518-21844-THM-DUPND
2018-11-0518-21845-THMND
2018-11-0518-21845-THM-DUPND
2018-11-0518-21848-THMND
2018-11-0518-21848-THM-DUPND
2018-11-0518-21844-THMND
2018-11-0518-21843-THM-DUPND
2018-11-0518-21843-THMND
2019-02-1419-02626-THMND
2019-02-1419-02630-THMND
2019-02-1419-02627-THMND
2019-02-1419-02625-THMND
2019-05-0119-07437-THMND
2019-05-0119-07434-THMND
2019-05-0119-07433-THMND
2019-05-0119-07432-THMND
2019-08-0519-13849TND
2019-08-0519-13850TND
2019-08-0519-13848TND
2019-11-0419-19803TND
2019-11-0419-19802TND
2019-11-0419-19801TND
2019-11-0419-19800TND