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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Bexley City PWS

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)

68

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.62 ppb1614ND - 5.10 ppb
20151.87 ppb16160.800 ppb - 3.90 ppb
20162.28 ppb16160.500 ppb - 6.30 ppb
20171.18 ppb1614ND - 4.70 ppb
20180.650 ppb1610ND - 2.10 ppb
20190.242 ppb122ND - 1.50 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
2014-03-052014-29356-THM0.700 ppb
2014-03-052014-29355-THM0.600 ppb
2014-03-052014-29358-THM1.000 ppb
2014-03-052014-29357-THMND
2014-06-042014-31838-THM2.60 ppb
2014-06-042014-31839-THMND
2014-06-042014-31840-THM1.000 ppb
2014-06-042014-31841-THM0.700 ppb
2014-09-032014-34448-THM1.10 ppb
2014-09-032014-34449-THM0.600 ppb
2014-09-032014-34450-THM0.600 ppb
2014-09-032014-34451-THM0.600 ppb
2014-12-032014-37197-THM3.70 ppb
2014-12-032014-37198-THM4.00 ppb
2014-12-032014-37196-THM3.60 ppb
2014-12-032014-37195-THM5.10 ppb
2015-03-062015-39595-THM2.10 ppb
2015-03-062015-39596-THM1.20 ppb
2015-03-062015-39597-THM1.20 ppb
2015-03-062015-39598-THM1.40 ppb
2015-06-032015-42171-THM1.70 ppb
2015-06-032015-42172-THM3.90 ppb
2015-06-032015-42173-THM1.80 ppb
2015-06-032015-42174-THM2.20 ppb
2015-09-022015-44942-THM1.40 ppb
2015-09-022015-44945-THM3.60 ppb
2015-09-022015-44943-THM1.80 ppb
2015-09-022015-44944-THM1.90 ppb
2015-12-022015-47497-THM0.900 ppb
2015-12-022015-47498-THM0.800 ppb
2015-12-022015-47499-THM1.50 ppb
2015-12-022015-47500-THM2.50 ppb
2016-03-022016-49930-THM2.70 ppb
2016-03-022016-49931-THM3.20 ppb
2016-03-022016-49932-THM3.30 ppb
2016-03-022016-49933-THM2.60 ppb
2016-06-012016-52662-THM0.700 ppb
2016-06-012016-52665-THM0.700 ppb
2016-06-012016-52664-THM0.600 ppb
2016-06-012016-52663-THM0.700 ppb
2016-09-072016-55871-THM3.20 ppb
2016-09-072016-55872-THM3.10 ppb
2016-09-072016-55873-THM6.30 ppb
2016-09-072016-55874-THM3.30 ppb
2016-12-072016-58733-THM3.20 ppb
2016-12-072016-58732-THM1.60 ppb
2016-12-072016-58730-THM0.700 ppb
2016-12-072016-58731-THM0.500 ppb
2017-03-012017-61131-THM1.60 ppb
2017-03-012017-61132-THM2.50 ppb
2017-03-012017-61133-THM1.60 ppb
2017-03-012017-61130-THM0.800 ppb
2017-06-072017-64259-THMND
2017-06-072017-64260-THM0.600 ppb
2017-06-072017-64261-THM0.600 ppb
2017-06-072017-64262-THM0.600 ppb
2017-09-062017-67031-THM1.50 ppb
2017-09-062017-67030-THM0.900 ppb
2017-09-062017-67029-THM0.900 ppb
2017-09-062017-67028-THM4.70 ppb
2017-12-062017-69655-THM0.900 ppb
2017-12-062017-69656-THM1.20 ppb
2017-12-062017-69657-THM0.500 ppb
2017-12-062017-69658-THMND
2018-03-072018-72069-THMND
2018-03-072018-72070-THMND
2018-03-072018-72071-THMND
2018-03-072018-72072-THMND
2018-06-062018-76959-THM0.900 ppb
2018-06-062018-76957-THM0.600 ppb
2018-06-062018-76956-THM0.900 ppb
2018-06-062018-76958-THM0.500 ppb
2018-09-052018-82187-THM1.90 ppb
2018-09-052018-82188-THM1.10 ppb
2018-09-052018-82189-THM1.30 ppb
2018-09-052018-82190-THM2.10 ppb
2018-12-052018-86535-THM0.500 ppb
2018-12-052018-86536-THMND
2018-12-052018-86537-THM0.600 ppb
2018-12-052018-86538-THMND
2019-03-062019-89986-THMND
2019-03-062019-89988-THMND
2019-03-062019-89987-THMND
2019-03-062019-89985-THMND
2019-06-052019-94333-THMND
2019-06-052019-94334-THMND
2019-06-052019-94335-THMND
2019-06-052019-94336-THMND
2019-09-042019-98961-THMND
2019-09-042019-98962-THMND
2019-09-042019-98963-THM1.50 ppb
2019-09-042019-98964-THM1.40 ppb