EWG's Tap Water Database — 2019 UPDATE



Jackson County PWSD1

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20120.588 ppb1210ND - 0.900 ppb
20130.686 ppb1614ND - 1.05 ppb
20140.628 ppb1612ND - 1.02 ppb
20150.872 ppb10100.540 ppb - 1.54 ppb
20160.874 ppb880.600 ppb - 1.33 ppb
20170.913 ppb880.670 ppb - 1.20 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
2012-04-17AB691540.640 ppb
2012-04-17AB691550.640 ppb
2012-04-17AB691560.650 ppb
2012-04-17AB691570.730 ppb
2012-07-23AB781570.860 ppb
2012-07-23AB781560.780 ppb
2012-07-23AB781550.900 ppb
2012-07-23AB781540.840 ppb
2012-10-29AB848770.520 ppb
2012-10-29AB848750.500 ppb
2013-01-28AB898620.700 ppb
2013-01-28AB898630.660 ppb
2013-01-28AB898640.700 ppb
2013-01-28AB898650.600 ppb
2013-04-15AB949320.510 ppb
2013-04-15AB949310.510 ppb
2013-07-22AC053881.05 ppb
2013-07-22AC053890.970 ppb
2013-07-22AC053900.950 ppb
2013-07-22AC053910.980 ppb
2013-10-22AC126710.760 ppb
2013-10-22AC126700.800 ppb
2013-10-22AC126690.770 ppb
2013-10-22AC126681.01 ppb
2014-04-22AC216730.840 ppb
2014-04-22AC216720.800 ppb
2014-04-22AC216710.780 ppb
2014-04-22AC216700.840 ppb
2014-07-28AC307031.02 ppb
2014-07-28AC307041.02 ppb
2014-07-28AC307050.970 ppb
2014-07-28AC307061.02 ppb
2014-10-28AC376930.800 ppb
2014-10-28AC376920.570 ppb
2014-10-28AC376910.690 ppb
2014-10-28AC376900.700 ppb
2015-01-26AC404150.580 ppb
2015-01-26AC404160.540 ppb
2015-01-26AC404170.570 ppb
2015-01-26AC404140.550 ppb
2015-04-21AC450660.750 ppb
2015-04-21AC450670.840 ppb
2015-07-20AC543181.54 ppb
2015-07-20AC543191.35 ppb
2015-10-19AC612310.980 ppb
2015-10-19AC612321.02 ppb
2016-01-20AC650380.600 ppb
2016-01-20AC650390.630 ppb
2016-04-19AC693970.770 ppb
2016-04-19AC693980.740 ppb
2016-07-14AC797171.28 ppb
2016-07-14AC797161.33 ppb
2016-10-24AC863060.820 ppb
2016-10-24AC863050.820 ppb
2017-01-24AC891160.970 ppb
2017-01-24AC891170.930 ppb
2017-04-12AC944750.810 ppb
2017-04-12AC944760.800 ppb
2017-07-14AD014291.15 ppb
2017-07-14AD014281.20 ppb
2017-10-18AD079110.670 ppb
2017-10-18AD079120.770 ppb