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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Lahaina

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

 

101

Samples

0

Samples exceeding legal limit (MCL)

94

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
20153.94 ppb2623ND - 7.90 ppb
20165.88 ppb1615ND - 10.00 ppb
20176.10 ppb2120ND - 12.0 ppb
20186.60 ppb1918ND - 9.60 ppb
20196.28 ppb1918ND - 11.0 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
2015-01-142015011602032.60 ppb
2015-01-142015011602042.20 ppb
2015-01-142015011602052.20 ppb
2015-01-142015011602062.50 ppb
2015-01-142015011602072.40 ppb
2015-01-142015011602085.90 ppb
2015-01-262015012803320.850 ppb
2015-01-26201501280756ND
2015-04-102015041509667.30 ppb
2015-04-102015041509675.20 ppb
2015-04-102015041509687.90 ppb
2015-04-102015041509696.60 ppb
2015-04-10201504150970ND
2015-04-132015041509816.70 ppb
2015-07-022015070705006.50 ppb
2015-07-022015070705016.00 ppb
2015-07-022015070705020.840 ppb
2015-07-022015070705033.90 ppb
2015-07-022015070705042.70 ppb
2015-07-022015070705057.40 ppb
2015-10-092015101306424.70 ppb
2015-10-092015101306434.80 ppb
2015-10-09201510130644ND
2015-10-092015101306455.40 ppb
2015-10-092015101306463.80 ppb
2015-10-092015101306474.00 ppb
2016-01-073.10 ppb
2016-01-075.80 ppb
2016-01-070.660 ppb
2016-01-076.60 ppb
2016-01-073.80 ppb
2016-01-076.60 ppb
2016-02-221.20 ppb
2016-02-22ND
2016-04-146.50 ppb
2016-04-148.30 ppb
2016-07-218.40 ppb
2016-07-219.50 ppb
2016-09-267.90 ppb
2016-10-069.30 ppb
2016-10-0610.00 ppb
2016-11-286.40 ppb
2017-01-128.10 ppb
2017-01-128.80 ppb
2017-01-233.80 ppb
2017-01-237.70 ppb
2017-01-302.80 ppb
2017-01-301.60 ppb
2017-01-305.50 ppb
2017-01-30ND
2017-01-303.00 ppb
2017-04-064.70 ppb
2017-04-067.80 ppb
2017-04-069.10 ppb
2017-04-068.50 ppb
2017-07-145.40 ppb
2017-07-145.30 ppb
2017-07-147.20 ppb
2017-07-146.10 ppb
2017-10-065.30 ppb
2017-10-0612.0 ppb
2017-10-0610.00 ppb
2017-10-065.30 ppb
2018-01-112018011706955.70 ppb
2018-01-112018011706948.80 ppb
2018-01-112018011706938.80 ppb
2018-01-112018011706968.70 ppb
2018-01-31201801031006ND
2018-01-312018010310046.60 ppb
2018-03-222018032811000.990 ppb
2018-04-052018041100195.20 ppb
2018-04-052018041100187.40 ppb
2018-04-052018041100177.90 ppb
2018-04-052018041100207.70 ppb
2018-07-062018071110339.60 ppb
2018-07-232018072503846.40 ppb
2018-07-232018072503827.60 ppb
2018-07-232018072503838.90 ppb
2018-10-042018100905206.00 ppb
2018-10-042018100905196.70 ppb
2018-10-042018100905187.00 ppb
2018-10-042018100905215.40 ppb
2019-01-042019010800755.60 ppb
2019-01-042019010800747.70 ppb
2019-01-042019010800738.10 ppb
2019-01-042019010800769.70 ppb
2019-01-30201902010215ND
2019-01-302019020101994.50 ppb
2019-01-302019020102242.20 ppb
2019-04-022019040403504.80 ppb
2019-04-022019040403496.20 ppb
2019-04-022019040403487.10 ppb
2019-04-022019040403515.30 ppb
2019-07-262019073003164.30 ppb
2019-07-262019073003159.30 ppb
2019-07-2620190730031411.0 ppb
2019-07-262019073003174.80 ppb
2019-10-032019100806145.30 ppb
2019-10-032019100806138.00 ppb
2019-10-032019100806129.50 ppb
2019-10-032019100806155.90 ppb