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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Los Alamos Municipal Water System

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

62

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.984 ppb2012ND - 3.10 ppb
20161.71 ppb16160.570 ppb - 4.10 ppb
20171.51 ppb12120.630 ppb - 2.70 ppb
20181.41 ppb16160.460 ppb - 3.00 ppb
20191.22 ppb880.680 ppb - 1.90 ppb

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
2014-03-051403213-001AND
2014-03-051403211-001AND
2014-03-051403210-001AND
2014-06-101406449-001AND
2014-06-101406447-001AND
2014-06-101406450-001AND
2014-09-241409C33-001AND
2014-09-241409C06-001AND
2015-02-181502752-001AND
2015-02-181502747-001AND
2015-02-181502750-001AND
2015-02-181502748-001AND
2015-03-091503351-001AND
2015-03-091503352-001AND
2015-03-091503355-001AND
2015-03-091503354-001AND
2015-06-0820150169882.30 ppb
2015-06-0820150169861.70 ppb
2015-06-0820150169870.960 ppb
2015-06-0820150169890.840 ppb
2015-09-0820150268672.30 ppb
2015-09-0820150268661.30 ppb
2015-09-0820150268681.50 ppb
2015-09-0820150268653.10 ppb
2015-12-0820150359231.80 ppb
2015-12-0820150359241.000 ppb
2015-12-0820150359210.680 ppb
2015-12-0820150359222.20 ppb
2016-03-0820160066171.80 ppb
2016-03-0820160066181.80 ppb
2016-03-0820160066200.890 ppb
2016-03-0820160066190.570 ppb
2016-06-0620160157791.70 ppb
2016-06-0620160157781.000 ppb
2016-06-0620160157761.20 ppb
2016-06-0620160157771.20 ppb
2016-09-0720160262094.10 ppb
2016-09-0720160262103.00 ppb
2016-09-0720160262081.80 ppb
2016-09-0720160262071.60 ppb
2016-12-0720160350690.820 ppb
2016-12-0720160350702.60 ppb
2016-12-0720160350672.50 ppb
2016-12-0720160350680.830 ppb
2017-03-1520170075391.40 ppb
2017-03-1520170075380.830 ppb
2017-03-1520170075370.630 ppb
2017-03-2420170086211.50 ppb
2017-06-1620170177091.10 ppb
2017-06-1620170177101.20 ppb
2017-06-1620170177071.60 ppb
2017-06-1620170177081.90 ppb
2017-09-1120170261202.70 ppb
2017-09-1120170261212.40 ppb
2017-09-1120170261181.90 ppb
2017-09-1120170261191.000 ppb
2018-03-0720180066970.800 ppb
2018-03-0720180066961.60 ppb
2018-03-0720180066950.460 ppb
2018-03-0720180066941.30 ppb
2018-06-1320180163931.80 ppb
2018-06-1320180163921.20 ppb
2018-06-1320180163911.60 ppb
2018-06-1320180163900.930 ppb
2018-09-1120180254761.60 ppb
2018-09-1120180254773.00 ppb
2018-09-1120180254782.60 ppb
2018-09-1120180254791.20 ppb
2018-12-1220180344060.800 ppb
2018-12-1220180344071.60 ppb
2018-12-1220180344081.50 ppb
2018-12-1220180344090.500 ppb
2019-03-1520190065170.800 ppb
2019-03-1520190065191.10 ppb
2019-03-1520190065180.680 ppb
2019-03-1520190065161.90 ppb
2019-06-1220190162291.60 ppb
2019-06-1220190162281.90 ppb
2019-06-1220190162270.890 ppb
2019-06-1220190162260.920 ppb