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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Great Oaks Water Company Inc.

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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

 

53

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND20ND
2016ND160ND
2017ND80ND
2018ND30ND
20190.0647 ppb171ND - 1.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-03-279590-013-1030ND
2014-05-159590-013-1115ND
2014-08-259590-022-1505ND
2014-08-259590-021-1545ND
2014-08-259590-010-1035ND
2014-08-259590-007-0855ND
2014-08-279590-013-1230ND
2015-09-229590-007-0850ND
2015-09-229590-013-1000ND
2016-05-259590-025-1415ND
2016-08-229590-004-1230ND
2016-08-229590-009-1410ND
2016-08-229590-011-1325ND
2016-08-249590-015-1450ND
2016-08-249590-023-1405ND
2016-08-249590-018-1315ND
2016-08-249590-013-1230ND
2016-08-259590-002-1435ND
2016-08-259590-008-1255ND
2016-08-259590-001-1205ND
2016-08-259590-019-1350ND
2016-09-069590-007-1400ND
2016-09-139590-900-1440ND
2016-09-289590-025-1400ND
2016-11-029590-025-1115ND
2017-03-089590-025-0930ND
2017-04-139590-006-1000ND
2017-06-019590-010-1030ND
2017-08-309590-007-1030ND
2017-08-309590-021-1510ND
2017-08-319590-025-1440ND
2017-08-319590-022-1515ND
2017-09-149590-900-1230ND
2018-08-299590-010-0930ND
2018-08-309590-007-0930ND
2018-09-139590-900-1100ND
2019-08-289590-001-1420ND
2019-08-289590-007-1120ND
2019-08-289590-002-1030ND
2019-08-289590-006-0920ND
2019-08-299590-018-1000ND
2019-08-299590-004-1310ND
2019-08-299590-009-0745ND
2019-08-299590-008-1410ND
2019-08-299590-015-0850ND
2019-09-059590-023-1400ND
2019-09-059590-025-1250ND
2019-09-059590-019-1145ND
2019-09-129590-011-1300ND
2019-09-129590-013-1430ND
2019-09-129590-010-1145ND
2019-09-269590-900-14451.10 ppb
2019-10-299590-901-1330ND