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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Edmonds

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)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND130ND
2016ND150ND
20172.98 ppb161ND - 47.7 ppb
2018ND160ND
2019ND160ND

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
2014-02-1106633ND
2014-02-1106632ND
2014-02-1106634ND
2014-02-1106635ND
2014-05-1320604ND
2014-05-1320603ND
2014-05-1320602ND
2014-05-1320601ND
2014-08-1235722ND
2014-08-1235721ND
2014-08-1235720ND
2014-08-1235723ND
2014-11-1050425ND
2014-11-1050426ND
2014-11-1050424ND
2014-11-1050423ND
2015-02-0905875ND
2015-02-0905876ND
2015-02-0905878ND
2015-02-0905877ND
2015-05-1221323ND
2015-05-1221324ND
2015-05-1221325ND
2015-05-1221326ND
2015-05-1320604ND
2015-08-1137283ND
2015-08-1137285ND
2015-08-1137284ND
2015-08-1137282ND
2016-02-11ND
2016-02-11ND
2016-02-11ND
2016-05-10ND
2016-05-10ND
2016-05-10ND
2016-05-10ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-11-08ND
2016-11-08ND
2016-11-08ND
2016-11-08ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-05-09ND
2017-05-09ND
2017-05-09ND
2017-05-09ND
2017-08-08ND
2017-08-08ND
2017-08-0847.7 ppb
2017-08-08ND
2017-11-15ND
2017-11-15ND
2017-11-15ND
2017-11-15ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-11-13ND
2018-11-13ND
2018-11-13ND
2018-11-13ND
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND