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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Schofield Waterworks

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.06 ppb770.250 ppb - 2.20 ppb
20150.893 ppb770.190 ppb - 1.40 ppb
20160.815 ppb660.520 ppb - 1.80 ppb
20170.860 ppb440.280 ppb - 1.70 ppb
20181.25 ppb440.800 ppb - 1.90 ppb
20191.25 ppb330.860 ppb - 1.80 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
2014-02-107696700.730 ppb
2014-02-107696660.250 ppb
2014-04-247825141.10 ppb
2014-07-168035220.470 ppb
2014-08-138105092.00 ppb
2014-08-138105102.20 ppb
2014-11-138314970.660 ppb
2015-03-038461560.190 ppb
2015-03-038461541.20 ppb
2015-04-208551680.990 ppb
2015-07-078693360.630 ppb
2015-08-108759800.840 ppb
2015-08-108759811.40 ppb
2015-12-078971301.000 ppb
2016-02-099046650.520 ppb
2016-02-099046670.640 ppb
2016-04-059137800.540 ppb
2016-08-109384880.770 ppb
2016-08-109384891.80 ppb
2016-10-129530760.620 ppb
2017-06-209990420.360 ppb
2017-09-0610162151.10 ppb
2017-09-0610162141.70 ppb
2017-11-0710283890.280 ppb
2018-08-1510742120.890 ppb
2018-08-2010748971.40 ppb
2018-08-2810765740.800 ppb
2018-08-2810765761.90 ppb
2019-08-1911419851.10 ppb
2019-08-2211430431.80 ppb
2019-09-1611480860.860 ppb