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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Wilmington 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

 

97

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
20170.0856 ppb162ND - 0.690 ppb
20180.1000 ppb173ND - 0.600 ppb
20190.113 ppb163ND - 0.600 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
2014-01-08A140173049ND
2014-01-08A140173048ND
2014-01-08A140173047ND
2014-01-08A140173046ND
2014-04-09A140190761ND
2014-04-09A140190764ND
2014-04-09A140190763ND
2014-04-09A140190762ND
2014-07-08A140191679ND
2014-07-08A140191678ND
2014-07-08A140191680ND
2014-07-08A140191681ND
2014-10-08A140045397ND
2014-10-08A140045399ND
2014-10-08A140055637ND
2014-10-08A140055638ND
2015-01-13A150191328ND
2015-01-13A150217242ND
2015-01-13A150217243ND
2015-01-13A150190765ND
2015-04-14A150232179ND
2015-04-14A150232178ND
2015-04-14A150232181ND
2015-04-14A150232180ND
2015-07-14A150310804ND
2015-07-14A150310803ND
2015-07-14A150310802ND
2015-07-15A150310805ND
2015-10-13A150328647ND
2015-10-13A150328648ND
2015-10-13A150328649ND
2015-10-13A150328650ND
2016-01-12A160319561ND
2016-01-12A160331995ND
2016-01-12A160319560ND
2016-01-12A160319559ND
2016-04-12A160374768ND
2016-04-12A160374765ND
2016-04-12A160374766ND
2016-04-12A160374767ND
2016-07-12A160056625ND
2016-07-12A160399448ND
2016-07-12A160399450ND
2016-07-12A160399451ND
2016-10-11A160447309ND
2016-10-11A160447310ND
2016-10-11A160447311ND
2016-10-11A160447312ND
2017-01-10A1704631930.690 ppb
2017-01-10A170463196ND
2017-01-10A1704631940.680 ppb
2017-01-10A170463195ND
2017-04-11A170487443ND
2017-04-11A170487444ND
2017-04-11A170487445ND
2017-04-11A170487446ND
2017-07-11A170512303ND
2017-07-11A170512302ND
2017-07-11A170512301ND
2017-07-11A170512300ND
2017-10-11A170540000ND
2017-10-11A170540001ND
2017-10-11A170540002ND
2017-10-11A170540003ND
2018-01-16A180548462ND
2018-01-16A180548461ND
2018-01-16A180533044ND
2018-01-17A180548463ND
2018-01-17A180516669ND
2018-04-10A180587694ND
2018-04-10A180587695ND
2018-04-10A180587696ND
2018-04-10A180587697ND
2018-07-10A1804630200.600 ppb
2018-07-10A1804630190.600 ppb
2018-07-10A1806140810.500 ppb
2018-07-10A180614082ND
2018-10-09A180463055ND
2018-10-09A180463054ND
2018-10-09A180593248ND
2018-10-09A180463057ND
2019-01-089A01171-05ND
2019-01-089A01171-06ND
2019-01-089A01171-04ND
2019-01-089A01171-03ND
2019-04-099D01376-01ND
2019-04-099D01376-02ND
2019-04-099D01376-03ND
2019-04-099D01376-04ND
2019-07-089G01554-010.600 ppb
2019-07-089G01554-02ND
2019-07-089G01554-030.600 ppb
2019-07-089G01554-040.600 ppb
2019-10-089J01429-01ND
2019-10-089J01429-02ND
2019-10-089J01429-03ND
2019-10-089J01429-04ND