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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Chesterfield County Central Water System

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

226

Samples

0

Samples exceeding legal limit (MCL)

224

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.25 ppb41410.550 ppb - 2.50 ppb
20131.07 ppb4543ND - 3.40 ppb
20141.16 ppb30300.500 ppb - 4.90 ppb
20150.966 ppb41410.500 ppb - 2.90 ppb
20161.26 ppb33330.500 ppb - 2.80 ppb
20171.42 ppb36360.520 ppb - 4.80 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2012-02-14201202160150TTHM0.660 ppb
2012-02-142012022160147TTH0.630 ppb
2012-02-14201202160149TTHM0.620 ppb
2012-02-14201202160144TTHM0.590 ppb
2012-02-14201202160145TTHM0.580 ppb
2012-02-14201202160142TTHM0.580 ppb
2012-02-14201202160143TTHM0.580 ppb
2012-02-14201202160148TTHM0.550 ppb
2012-05-15201205170242TTHM1.000 ppb
2012-05-15201205170235TTHM1.40 ppb
2012-05-15201205170237TTHM1.30 ppb
2012-05-15201205170236TTHM1.30 ppb
2012-05-15201205170244TTHM1.20 ppb
2012-05-15201205170247TTHM1.20 ppb
2012-05-15201205170240TTHM1.20 ppb
2012-05-15201205170249TTHM1.10 ppb
2012-05-15201205170243TTHM0.860 ppb
2012-08-15201208160414TTHM1.000 ppb
2012-08-15201208160417TTHM1.000 ppb
2012-08-15201208160438TTHM2.50 ppb
2012-08-15201208160437TTHM2.40 ppb
2012-08-152012081160436TTH2.20 ppb
2012-08-15201208160387TTHM2.10 ppb
2012-08-15201208160386TTHM2.00 ppb
2012-08-15201208160413TTHM1.90 ppb
2012-08-15201208160385TTHM1.90 ppb
2012-08-15201208160388TTHM1.20 ppb
2012-08-15201208160415TTHM1.10 ppb
2012-08-15201208160416TTHM1.10 ppb
2012-11-15201211160351TTHM2.30 ppb
2012-11-15201211160352TTHM2.20 ppb
2012-11-15201211160350TTHM2.20 ppb
2012-11-15201211160363TTHM1.30 ppb
2012-11-15201211160357TTHM1.20 ppb
2012-11-15201211160362TTHM1.20 ppb
2012-11-15201211160361TTHM1.10 ppb
2012-11-15201211160360TTHM0.940 ppb
2012-11-15201211160355TTHM0.940 ppb
2012-11-15201211160358TTHM0.810 ppb
2012-11-15201211160359TTHM0.720 ppb
2012-11-15201211160356TTHM0.560 ppb
2013-02-1320130215207TTHM1.000 ppb
2013-02-1320130215205TTHM1.000 ppb
2013-02-13201302150206TTHM1.10 ppb
2013-02-13201302150212TTHM0.910 ppb
2013-02-13201302150271TTHM0.820 ppb
2013-02-13201302150214TTHM0.730 ppb
2013-02-13201302150213TTHM0.690 ppb
2013-02-13201302150218TTHM0.530 ppb
2013-05-14E130501441ND
2013-05-14E130501440ND
2013-05-16201305170181TTHM1.000 ppb
2013-05-16201305170177TTHM1.20 ppb
2013-05-16201305170175TTHM1.10 ppb
2013-05-16201305170180TTHM0.970 ppb
2013-05-16201305170176TTHM0.950 ppb
2013-05-16201305170170TTHM0.880 ppb
2013-05-16210305170169TTHM0.870 ppb
2013-05-16201305170171TTHM0.800 ppb
2013-05-16201305170182TTHM0.780 ppb
2013-05-16201305170174TTHM0.750 ppb
2013-05-16201305170183TTHM0.730 ppb
2013-08-13201308140612TTHM1.40 ppb
2013-08-13201308140609TTHM1.30 ppb
2013-08-13201308170072TTHM1.20 ppb
2013-08-13201308140653TTHM1.10 ppb
2013-08-13201308140611TTHM0.990 ppb
2013-08-13201308140651TTHM0.940 ppb
2013-08-13201308140610TTHM0.930 ppb
2013-08-13201308140629TTHM0.890 ppb
2013-08-13201208140631TTHM0.810 ppb
2013-08-13201308140652TTHM0.770 ppb
2013-08-13201308140630TTHM0.680 ppb
2013-08-13201308140608TTHM0.630 ppb
2013-11-13201311141040TTHM1.000 ppb
2013-11-13201311141033TTHM3.40 ppb
2013-11-13201311141032TTHM3.10 ppb
2013-11-13201311141030TTHM1.50 ppb
2013-11-13201311141024TTHM1.40 ppb
2013-11-13201311141026TTHM1.40 ppb
2013-11-13201311141031TTHM1.40 ppb
2013-11-13201311141025TTHM1.30 ppb
2013-11-13201311141029TTHM1.30 ppb
2013-11-13201311141027TTHM1.30 ppb
2013-11-13201311141041TTHM1.20 ppb
2013-11-13201311141039TTHM1.20 ppb
2014-02-11201402121026TTHM0.990 ppb
2014-02-11201402121022TTHM0.500 ppb
2014-05-14201405150462TTHM0.600 ppb
2014-05-14201405150475TTHM0.520 ppb
2014-08-12201408130490TTHM4.90 ppb
2014-08-12201408130487TTHM3.30 ppb
2014-08-12201408130246TTHM1.50 ppb
2014-08-12201408130247TTHM1.40 ppb
2014-08-12201408130248TTHM1.20 ppb
2014-08-12201408130489TTHM1.20 ppb
2014-08-12201408130488TTHM1.20 ppb
2014-08-12201408130486TTHM1.20 ppb
2014-08-12201408130563TTHM1.10 ppb
2014-08-12201408130249TTHM1.10 ppb
2014-08-12201408130562TTHM0.840 ppb
2014-08-12201408130561TTHM0.810 ppb
2014-08-22E1408010081.40 ppb
2014-08-22E1408010061.30 ppb
2014-08-22E1408010071.30 ppb
2014-08-22E1408010050.900 ppb
2014-11-12201411130870TTHM1.000 ppb
2014-11-12201411130869TTHM0.960 ppb
2014-11-12201411130866TTHM0.820 ppb
2014-11-12201411130871TTHM0.780 ppb
2014-11-12201411130859TTHM0.730 ppb
2014-11-12201411130862TTHM0.710 ppb
2014-11-12201411130861TTHM0.710 ppb
2014-11-12201411130867TTHM0.620 ppb
2014-11-12201411130865TTHM0.590 ppb
2014-11-12201411130860TTHM0.560 ppb
2015-02-1100127_EXP-EUROFI1.10 ppb
2015-02-1100127_EXP-EUROFI0.960 ppb
2015-02-1100127_EXP-EUROFI0.950 ppb
2015-02-1100127_EXP-EUROFI0.870 ppb
2015-02-1100127_EXP-EUROFI0.860 ppb
2015-02-1100127_EXP-EUROFI0.820 ppb
2015-02-1100127_EXP-EUROFI0.820 ppb
2015-02-1100127_EXP-EUROFI0.650 ppb
2015-02-1100127_EXP-EUROFI0.640 ppb
2015-02-1100127_EXP-EUROFI0.570 ppb
2015-02-1100127_EXP-EUROFI0.520 ppb
2015-05-12460260-EUROFINS1.10 ppb
2015-05-12460260-EUROFINS0.910 ppb
2015-05-12460260-EUROFINS0.830 ppb
2015-05-12460260-EUROFINS0.600 ppb
2015-05-12460260-EUROFINS0.590 ppb
2015-05-12460260-EUROFINS0.550 ppb
2015-05-12460260-EUROFINS0.550 ppb
2015-05-12460260-EUROFINS0.530 ppb
2015-05-12460260-EUROFINS0.500 ppb
2015-08-12460260-EUROFINS2.90 ppb
2015-08-12460260-EUROFINS2.20 ppb
2015-08-12460260-EUROFINS2.10 ppb
2015-08-12460260-EUROFINS1.40 ppb
2015-08-12460260-EUROFINS1.40 ppb
2015-08-12460260-EUROFINS1.30 ppb
2015-08-12460260-EUROFINS1.30 ppb
2015-08-12460260-EUROFINS1.20 ppb
2015-08-12460260-EUROFINS1.10 ppb
2015-08-12460260-EUROFINS0.880 ppb
2015-08-12460260-EUROFINS0.840 ppb
2015-08-12460260-EUROFINS0.520 ppb
2015-11-11460260-EUROFINS1.10 ppb
2015-11-11460260-EUROFINS1.000 ppb
2015-11-11460260-EUROFINS0.940 ppb
2015-11-11460260-EUROFINS0.870 ppb
2015-11-11460260-EUROFINS0.860 ppb
2015-11-11460260-EUROFINS0.770 ppb
2015-11-11460260-EUROFINS0.720 ppb
2015-11-11460260-EUROFINS0.720 ppb
2015-11-11460260-EUROFINS0.560 ppb
2016-02-09201602100614TTHM0.660 ppb
2016-02-09201602110056TTHM0.530 ppb
2016-02-09201602100510TTHM0.500 ppb
2016-05-10201605110490TTHM1.000 ppb
2016-05-10201605110700TTHM1.000 ppb
2016-05-10201605110487TTHM0.950 ppb
2016-05-10201605110488TTHM0.930 ppb
2016-05-10201605110701TTHM0.910 ppb
2016-05-10201605110697TTHM0.900 ppb
2016-05-10201605110731TTHM0.810 ppb
2016-05-10201605110699TTHM0.770 ppb
2016-05-10201605110729TTHM0.720 ppb
2016-05-10201605110698TTHM0.700 ppb
2016-05-10201605110730TTHM0.540 ppb
2016-05-10201605110489TTHM0.520 ppb
2016-08-09201608100672TTHM2.80 ppb
2016-08-09201608100680TTHM2.70 ppb
2016-08-09201608100682TTHM2.20 ppb
2016-08-09201608100671TTHM2.00 ppb
2016-08-09201608100776TTHM2.00 ppb
2016-08-09201608100681TTHM1.90 ppb
2016-08-09201608100683TTHM1.90 ppb
2016-08-09201608100670TTHM1.70 ppb
2016-08-09201608100780TTHM1.40 ppb
2016-08-09201608100779TTHM1.30 ppb
2016-08-09201608100777TTHM1.20 ppb
2016-08-09201608100778TTHM1.20 ppb
2016-11-08201611100311TTHM2.20 ppb
2016-11-08201611100308TTHM2.10 ppb
2016-11-08201611100307TTHM1.80 ppb
2016-11-08201611100508TTHM0.600 ppb
2016-11-08201611100305TTHM0.550 ppb
2016-11-08201611100310TTHM0.500 ppb
2017-02-07201702080870TTHM0.520 ppb
2017-04-20E1703047220.800 ppb
2017-05-09201705101017TTHM1.30 ppb
2017-05-09201705101018TTHM1.20 ppb
2017-05-09201705100777TTHM1.000 ppb
2017-05-09201705101019TTHM0.970 ppb
2017-05-09201705100753TTHM0.950 ppb
2017-05-09201705100752TTHM0.880 ppb
2017-05-09201705100776TTHM0.680 ppb
2017-05-09201705100774TTHM0.680 ppb
2017-05-09201705100775TTHM0.640 ppb
2017-05-09201705100751TTHM0.610 ppb
2017-08-08201708091232TTHM4.80 ppb
2017-08-08201708091231TTHM4.20 ppb
2017-08-08201708091235TTHM4.10 ppb
2017-08-08201708091234TTHM2.50 ppb
2017-08-08201708091258TTHM1.80 ppb
2017-08-08201708091257TTHM1.60 ppb
2017-08-08201708091259TTHM1.50 ppb
2017-08-08201708091233TTHM1.40 ppb
2017-08-08201708090889TTHM1.30 ppb
2017-08-08201708090886TTHM1.10 ppb
2017-08-08201708090887TTHM1.10 ppb
2017-08-08201708090888TTHM0.950 ppb
2017-11-07201711080407TTHM1.40 ppb
2017-11-07201711080595TTHM1.40 ppb
2017-11-07201711080549TTHM1.30 ppb
2017-11-07201711080550TTHM1.30 ppb
2017-11-07201711080409TTHM1.30 ppb
2017-11-07201711080410TTHM1.30 ppb
2017-11-07201711080548TTHM1.20 ppb
2017-11-07201711080408TTHM1.20 ppb
2017-11-07201711080591TTHM1.20 ppb
2017-11-07201711080593TTHM1.20 ppb
2017-11-07201711080594TTHM0.960 ppb
2017-11-07201711080592TTHM0.720 ppb