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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Town of Oak Island

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

70

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.48 ppb1613ND - 11.0 ppb
20153.09 ppb1611ND - 13.2 ppb
20165.81 ppb1612ND - 15.0 ppb
20170.992 ppb168ND - 2.64 ppb
20186.68 ppb16161.01 ppb - 14.2 ppb
20191.58 ppb1610ND - 6.35 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
2014-03-1237729_14-072081.56 ppb
2014-03-1237729_14-072091.49 ppb
2014-03-1237729_14-072101.68 ppb
2014-03-1237729_14-072071.72 ppb
2014-06-1137729_14-168031.000 ppb
2014-06-1137729_14-168045.00 ppb
2014-06-1137729_14-16805ND
2014-06-1137729_14-1680611.0 ppb
2014-09-1037729_14-27490ND
2014-09-1037729_14-274912.00 ppb
2014-09-1037729_14-27492ND
2014-09-1037729_14-274933.00 ppb
2014-12-1037729_14-373842.86 ppb
2014-12-1037729_14-373872.98 ppb
2014-12-1037729_14-373862.75 ppb
2014-12-1037729_14-373852.70 ppb
2015-03-111.000 ppb
2015-03-112.00 ppb
2015-03-111.000 ppb
2015-03-111.000 ppb
2015-06-171.16 ppb
2015-06-17ND
2015-06-171.23 ppb
2015-06-172.18 ppb
2015-09-1610.3 ppb
2015-09-1613.2 ppb
2015-09-168.38 ppb
2015-09-167.92 ppb
2015-12-09ND
2015-12-09ND
2015-12-09ND
2015-12-09ND
2016-03-1637729_16-08356ND
2016-03-1637729_16-08357ND
2016-03-1637729_16-08358ND
2016-03-1637729_16-083591.000 ppb
2016-06-1537729_16-192821.28 ppb
2016-06-1537729_16-19283ND
2016-06-1537729_16-192811.53 ppb
2016-06-1537729_16-192791.98 ppb
2016-09-1437729_16-3194912.5 ppb
2016-09-1437729_16-319504.67 ppb
2016-09-1437729_16-319514.21 ppb
2016-09-1437729_16-3195213.5 ppb
2016-12-1437729_16-4343315.0 ppb
2016-12-1437729_16-4343412.2 ppb
2016-12-1437729_16-4343512.3 ppb
2016-12-1437729_16-4343612.8 ppb
2017-03-0837729_17-077481.47 ppb
2017-03-0837729_17-077452.61 ppb
2017-03-0837729_17-077461.28 ppb
2017-03-0837729_17-077471.18 ppb
2017-06-1437729_17-20126ND
2017-06-1437729_17-20127ND
2017-06-1437729_17-20128ND
2017-06-1437729_17-20129ND
2017-09-1337729_17-33445ND
2017-09-1337729_17-33443ND
2017-09-1337729_17-33442ND
2017-09-1337729_17-33440ND
2017-12-1337729_17-472552.64 ppb
2017-12-1337729_17-472622.43 ppb
2017-12-1337729_17-472632.05 ppb
2017-12-1337729_17-472642.23 ppb
2018-01-2437729_18-02986 1.27 ppb
2018-01-2437729_18-02985 1.51 ppb
2018-01-2437729_18-02984 1.20 ppb
2018-01-2437729_18-02978 1.01 ppb
2018-06-1337729_18-23813 9.16 ppb
2018-06-1337729_18-23810 14.2 ppb
2018-06-1337729_18-23811 10.9 ppb
2018-06-1337729_18-23812 9.57 ppb
2018-09-2637729_18-39767 13.0 ppb
2018-09-2637729_18-39766 8.00 ppb
2018-09-2637729_18-39765 10.00 ppb
2018-09-2637729_18-39763 10.00 ppb
2018-12-1237729_18-51797 4.33 ppb
2018-12-1237729_18-51800 4.36 ppb
2018-12-1237729_18-51801 4.21 ppb
2018-12-1237729_18-51802 4.24 ppb
2019-03-1337729_19-10461 ND
2019-03-1337729_19-10463 ND
2019-03-1337729_19-10464 ND
2019-03-1337729_19-10465 ND
2019-06-1237729_19-24140 6.35 ppb
2019-06-1237729_19-24143 ND
2019-06-1237729_19-24142 ND
2019-06-1237729_19-24141 4.18 ppb
2019-09-1837729_19-40518 2.97 ppb
2019-09-1837729_19-40520 1.20 ppb
2019-09-1837729_19-40519 1.92 ppb
2019-09-1837729_19-40517 1.56 ppb
2019-12-1137729_19-52844 1.84 ppb
2019-12-1137729_19-52843 1.97 ppb
2019-12-1137729_19-52842 1.31 ppb
2019-12-1137729_19-52841 1.95 ppb