EWG's Tap Water Database


Bromochloroacetic acid

Forest Water Supply Corporation

Bromochloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromochloroacetic acid and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20102.90 ppb442.40 ppb - 3.30 ppb
20111.90 ppb441.30 ppb - 2.50 ppb
20122.70 ppb442.30 ppb - 3.00 ppb
20134.78 ppb554.00 ppb - 5.80 ppb
20144.59 ppb884.30 ppb - 5.10 ppb
20154.75 ppb883.00 ppb - 5.80 ppb

ppb = parts per billion.

All test results

Date Lab ID Result
2010-03-1810035430042.40 ppb
2010-06-0710062170023.00 ppb
2010-09-3010100050023.30 ppb
2010-12-0810124040022.90 ppb
2011-02-0711021600032.50 ppb
2011-06-0211061170021.30 ppb
2011-08-251108B230022.20 ppb
2011-12-1411125700021.60 ppb
2012-01-2412015550043.00 ppb
2012-06-2112067640022.60 ppb
2012-08-0712083380022.30 ppb
2012-10-1112104470022.90 ppb
2013-03-0613032030034.50 ppb
2013-04-0213041310024.60 ppb
2013-07-16Q13038490015.80 ppb
2013-10-22Q13091710024.00 ppb
2013-10-22Q13091710015.00 ppb
2014-03-06Q14072350044.30 ppb
2014-03-06Q14072350034.40 ppb
2014-05-30Q14186000024.40 ppb
2014-05-30Q14186000015.10 ppb
2014-09-09Q14426920025.00 ppb
2014-09-09Q14426920014.90 ppb
2014-11-06Q14551360024.30 ppb
2014-11-06Q14551360014.30 ppb
2015-02-05Q15047090014.40 ppb
2015-02-05Q15047090024.10 ppb
2015-06-08Q15207760025.80 ppb
2015-06-08Q15207760015.80 ppb
2015-09-01Q15335900025.50 ppb
2015-09-01Q15335900014.80 ppb
2015-12-04Q15484140023.00 ppb
2015-12-04Q15484140014.60 ppb