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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

City of Alexandria

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for dibromochloromethane. Sample information shown below was taken by Fairfax County Water Authority.

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.

 

356

Samples

0

Samples exceeding legal limit (MCL)

356

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.51 ppb36360.600 ppb - 6.68 ppb
20132.91 ppb881.70 ppb - 4.00 ppb
20143.37 ppb30301.10 ppb - 5.80 ppb
20154.18 ppb16163.30 ppb - 5.30 ppb
20163.62 ppb32320.900 ppb - 5.90 ppb
20172.85 ppb32321.50 ppb - 5.40 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

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for dibromochloromethane. Sample information shown below was taken by Fairfax County Water Authority.

Date Lab ID Result
2012-05-15FW12043002-11_TH4.78 ppb
2012-05-15FW12043002-03_TH4.66 ppb
2012-05-15FW12043002-09_TH4.56 ppb
2012-05-15FW12043002-01_TH4.28 ppb
2012-05-15FW12043002-02_TH4.20 ppb
2012-05-15FW12043002-07_TH4.01 ppb
2012-05-15FW12043002-14_TH3.88 ppb
2012-05-15FW12043002-06_TH3.83 ppb
2012-05-15FW12043002-08_TH3.62 ppb
2012-05-15FW12043002-05_TH3.37 ppb
2012-05-15FW12043002-10_TH3.33 ppb
2012-05-15FW12043002-04_TH2.83 ppb
2012-08-14FW12080120-07_TH6.68 ppb
2012-08-14FW12080120-08_TH6.44 ppb
2012-08-14FW12080120-06_TH6.43 ppb
2012-08-14FW12080120-10_TH6.37 ppb
2012-08-14FW12080120-04_TH6.33 ppb
2012-08-14FW12080120-05_TH5.97 ppb
2012-08-14FW12080120-14_TH5.64 ppb
2012-08-14FW12080120-11_TH4.75 ppb
2012-08-14FW12080120-02_TH4.37 ppb
2012-08-14FW12080120-03_TH3.75 ppb
2012-08-14FW12080120-09_TH3.72 ppb
2012-08-14FW12080120-01_TH3.53 ppb
2012-11-15FW12102514-11_TH1.90 ppb
2012-11-15FW12102514-07_TH1.87 ppb
2012-11-15FW12102514-09_TH1.81 ppb
2012-11-15FW12102514-04_TH1.75 ppb
2012-11-15FW12102514-10_TH1.55 ppb
2012-11-15FW12102514-05_TH1.42 ppb
2012-11-15FW12102514-06_TH1.31 ppb
2012-11-15FW12102514-16_TH0.830 ppb
2012-11-15FW12102514-14_TH0.750 ppb
2012-11-15FW12102514-08_TH0.700 ppb
2012-11-15FW12102514-13_TH0.660 ppb
2012-11-15FW12102514-15_TH0.600 ppb
2013-02-21FW13012811-05_TH2.21 ppb
2013-02-21FW13012811-10_TH2.11 ppb
2013-02-21FW13012811-09_TH2.07 ppb
2013-02-21FW13012811-06_TH2.04 ppb
2013-02-21FW13012811-07_TH2.01 ppb
2013-02-21FW13012811-11_TH1.96 ppb
2013-02-21FW13012811-04_TH1.62 ppb
2013-02-21FW13012811-08_TH1.21 ppb
2013-02-21FW13012811-15_TH1.15 ppb
2013-02-21FW13012811-14_TH1.14 ppb
2013-02-21FW13012811-13_TH1.06 ppb
2013-02-21FW13012811-16_TH1.04 ppb
2013-05-16FW13042632-10_TH2.53 ppb
2013-05-16FW13042632-05_TH2.46 ppb
2013-05-16FW13042632-14_TH2.36 ppb
2013-05-16FW13042632-09_TH2.35 ppb
2013-05-16FW13042632-13_TH2.34 ppb
2013-05-16FW13042632-15_TH2.22 ppb
2013-05-16FW13042632-06_TH2.15 ppb
2013-05-16FW13042632-16_TH2.06 ppb
2013-05-16FW13042632-07_TH1.97 ppb
2013-05-16FW13042632-08_TH1.97 ppb
2013-05-16FW13042632-11_TH1.84 ppb
2013-05-16FW13042632-04_TH1.84 ppb
2013-08-15FW13073116-04_TH7.21 ppb
2013-08-15FW13073116-11_TH6.89 ppb
2013-08-15FW13073116-06_TH6.55 ppb
2013-08-15FW13073116-05_TH6.29 ppb
2013-08-15FW13073116-07_TH6.21 ppb
2013-08-15FW13073116-09_TH5.37 ppb
2013-08-15FW13073116-10_TH5.18 ppb
2013-08-15FW13073116-14_TH4.78 ppb
2013-08-15FW13073116-15_TH4.38 ppb
2013-08-15FW13073116-16_TH2.04 ppb
2013-08-15FW13073116-08_TH1.95 ppb
2013-08-15FW13073116-13_TH1.53 ppb
2013-11-21FW13102429-04_TH6.17 ppb
2013-11-21FW13102429-05_TH6.06 ppb
2013-11-21FW13102429-06_TH6.02 ppb
2013-11-21FW13102430-04_TH5.98 ppb
2013-11-21FW13102430-03_TH5.92 ppb
2013-11-21FW13102429-03_TH5.41 ppb
2013-11-21FW13102430-05_TH5.41 ppb
2013-11-21FW13102431-05_TH3.92 ppb
2013-11-21FW13102431-04_TH3.01 ppb
2013-11-21FW13102430-02_TH2.70 ppb
2013-11-21FW13102431-06_TH2.17 ppb
2013-11-21FW13102431-03_TH2.17 ppb
2014-02-20FW14013105-04_TH3.14 ppb
2014-02-20FW14013105-05_TH2.85 ppb
2014-02-20FW14013107-06_TH2.84 ppb
2014-02-20FW14013105-03_TH2.82 ppb
2014-02-20FW14013105-06_TH2.69 ppb
2014-02-20FW14013106-04_TH2.69 ppb
2014-02-20FW14013106-03_TH2.55 ppb
2014-02-20FW14013104-03_TH2.43 ppb
2014-02-20FW14013107-04_TH2.37 ppb
2014-02-20FW14013104-04_TH2.37 ppb
2014-02-20FW14013104-05_TH2.34 ppb
2014-02-20FW14013106-05_TH2.26 ppb
2014-02-20FW14013104-02_TH2.13 ppb
2014-02-20FW14013108-04_TH2.08 ppb
2014-02-20FW14013107-05_TH2.05 ppb
2014-02-20FW14013108-05_TH1.86 ppb
2014-02-20FW14013108-06_TH1.78 ppb
2014-02-20FW14013108-03_TH1.77 ppb
2014-02-20FW14013107-03_TH1.68 ppb
2014-02-20FW14013106-02_TH1.58 ppb
2014-05-15FW14042403-04_TH3.06 ppb
2014-05-15FW14042403-02_TH3.01 ppb
2014-05-15FW14042359-05_TH2.99 ppb
2014-05-15FW14042403-03_TH2.97 ppb
2014-05-15FW14042360-05_TH2.94 ppb
2014-05-15FW14042403-05_TH2.93 ppb
2014-05-15FW14042359-04_TH2.92 ppb
2014-05-15FW14042360-04_TH2.86 ppb
2014-05-15FW14042359-06_TH2.86 ppb
2014-05-15FW14042360-03_TH2.80 ppb
2014-05-15FW14042359-03_TH2.60 ppb
2014-05-15FW14042362-06_TH2.21 ppb
2014-05-15FW14042362-05_TH2.16 ppb
2014-05-15FW14042362-04_TH2.08 ppb
2014-05-15FW14042361-05_TH1.99 ppb
2014-05-15FW14042361-04_TH1.92 ppb
2014-05-15FW14042362-03_TH1.64 ppb
2014-05-15FW14042361-03_TH1.58 ppb
2014-05-15FW14042361-06_TH1.48 ppb
2014-05-15FW14042360-02_TH1.44 ppb
2014-08-19FW14072250-03_TH4.18 ppb
2014-08-19FW14072250-04_TH4.10 ppb
2014-08-19FW14072250-06_TH3.97 ppb
2014-08-19FW14072250-05_TH3.89 ppb
2014-08-19FW14072252-05_TH3.55 ppb
2014-08-19FW14072252-04_TH3.53 ppb
2014-08-19FW14072252-03_TH3.13 ppb
2014-08-19FW14072252-06_TH2.95 ppb
2014-08-20FW14072251-04_TH4.41 ppb
2014-08-20FW14072251-03_TH4.26 ppb
2014-08-20FW14072251-05_TH4.07 ppb
2014-08-20FW14072251-02_TH2.75 ppb
2014-08-21FW14072254-03_TH4.53 ppb
2014-08-21FW14072254-02_TH4.22 ppb
2014-08-21FW14072254-05_TH4.17 ppb
2014-08-21FW14072254-04_TH4.10 ppb
2014-08-21FW14072253-04_TH4.08 ppb
2014-08-21FW14072253-06_TH3.98 ppb
2014-08-21FW14072253-03_TH3.95 ppb
2014-08-21FW14072253-05_TH3.69 ppb
2014-11-20FW141022072-04_T5.92 ppb
2014-11-20FW141022072-06_T5.85 ppb
2014-11-20FW141022071-04_T5.74 ppb
2014-11-20FW141022071-03_T5.61 ppb
2014-11-20FW141022069-03_T5.28 ppb
2014-11-20FW141022071-05_T5.15 ppb
2014-11-20FW141022069-04_T5.01 ppb
2014-11-20FW141022072-05_T4.97 ppb
2014-11-20FW141022069-02_T4.89 ppb
2014-11-20FW141022069-05_T4.83 ppb
2014-11-20FW141022072-03_T4.72 ppb
2014-11-20FW141022073-04_T4.25 ppb
2014-11-20FW141022073-05_T4.09 ppb
2014-11-20FW141022073-06_T4.08 ppb
2014-11-20FW141022073-03_T3.91 ppb
2014-11-20FW141022070-04_T3.77 ppb
2014-11-20FW141022070-06_T3.58 ppb
2014-11-20FW141022070-05_T3.57 ppb
2014-11-20FW141022071-02_T3.42 ppb
2014-11-20FW141022070-03_T3.10 ppb
2015-02-1900125-FAIRFAX CO3.37 ppb
2015-02-1900125-FAIRFAX CO3.33 ppb
2015-02-1900125-FAIRFAX CO3.02 ppb
2015-02-1900125-FAIRFAX CO2.98 ppb
2015-02-1900125-FAIRFAX CO2.92 ppb
2015-02-1900125-FAIRFAX CO2.89 ppb
2015-02-1900125-FAIRFAX CO2.59 ppb
2015-02-1900125-FAIRFAX CO2.55 ppb
2015-02-1900125-FAIRFAX CO2.45 ppb
2015-02-1900125-FAIRFAX CO2.13 ppb
2015-02-1900125-FAIRFAX CO1.95 ppb
2015-02-1900125-FAIRFAX CO1.95 ppb
2015-02-1900125-FAIRFAX CO1.94 ppb
2015-02-1900125-FAIRFAX CO1.71 ppb
2015-02-2300125-FAIRFAX CO3.01 ppb
2015-02-2300125-FAIRFAX CO2.30 ppb
2015-05-2100125-FAIRFAX CO5.62 ppb
2015-05-2100125-FAIRFAX CO5.27 ppb
2015-05-2100125-FAIRFAX CO5.26 ppb
2015-05-2100125-FAIRFAX CO5.25 ppb
2015-05-2100125-FAIRFAX CO5.20 ppb
2015-05-2100125-FAIRFAX CO5.18 ppb
2015-05-2100125-FAIRFAX CO5.06 ppb
2015-05-2100125-FAIRFAX CO4.91 ppb
2015-05-2100125-FAIRFAX CO4.88 ppb
2015-05-2100125-FAIRFAX CO4.86 ppb
2015-05-2100125-FAIRFAX CO4.85 ppb
2015-05-2100125-FAIRFAX CO4.81 ppb
2015-05-2100125-FAIRFAX CO4.76 ppb
2015-05-2100125-FAIRFAX CO4.74 ppb
2015-05-2100125-FAIRFAX CO4.67 ppb
2015-05-2100125-FAIRFAX CO4.54 ppb
2015-08-2000125-FAIRFAX CO8.84 ppb
2015-08-2000125-FAIRFAX CO8.51 ppb
2015-08-2000125-FAIRFAX CO7.36 ppb
2015-08-2000125-FAIRFAX CO7.26 ppb
2015-08-2000125-FAIRFAX CO6.92 ppb
2015-08-2000125-FAIRFAX CO6.61 ppb
2015-08-2000125-FAIRFAX CO6.46 ppb
2015-08-2000125-FAIRFAX CO6.19 ppb
2015-08-2000125-FAIRFAX CO6.07 ppb
2015-08-2000125-FAIRFAX CO5.70 ppb
2015-08-2000125-FAIRFAX CO5.54 ppb
2015-08-2000125-FAIRFAX CO5.40 ppb
2015-08-2000125-FAIRFAX CO4.66 ppb
2015-08-2000125-FAIRFAX CO4.18 ppb
2015-08-2000125-FAIRFAX CO3.84 ppb
2015-08-2000125-FAIRFAX CO3.75 ppb
2015-11-2000125-FAIRFAX CO4.01 ppb
2015-11-2000125-FAIRFAX CO3.82 ppb
2015-11-2000125-FAIRFAX CO3.80 ppb
2015-11-2000125-FAIRFAX CO3.59 ppb
2015-11-2000125-FAIRFAX CO3.56 ppb
2015-11-2000125-FAIRFAX CO3.55 ppb
2015-11-2000125-FAIRFAX CO3.49 ppb
2015-11-2000125-FAIRFAX CO3.46 ppb
2015-11-2000125-FAIRFAX CO3.31 ppb
2015-11-2000125-FAIRFAX CO2.92 ppb
2015-11-2000125-FAIRFAX CO2.88 ppb
2015-11-2000125-FAIRFAX CO2.88 ppb
2015-11-2000125-FAIRFAX CO2.82 ppb
2015-11-2000125-FAIRFAX CO2.81 ppb
2015-11-2000125-FAIRFAX CO2.70 ppb
2015-11-2000125-FAIRFAX CO2.67 ppb
2016-02-18FW160107018-05_T2.50 ppb
2016-02-18FW160107018-03_T2.44 ppb
2016-02-18FW160107019-05_T2.35 ppb
2016-02-18FW160107019-03_T2.33 ppb
2016-02-18FW160107019-04_T2.26 ppb
2016-02-18FW160107019-02_T2.23 ppb
2016-02-18FW160107017-06_T2.20 ppb
2016-02-18FW160107017-05_T2.14 ppb
2016-02-18FW160107017-02_T1.99 ppb
2016-02-18FW160107018-04_T1.96 ppb
2016-02-18FW160107018-06_T1.92 ppb
2016-02-18FW160107020-06_T1.92 ppb
2016-02-18FW160107019-06_T1.52 ppb
2016-02-18FW160107020-04_T1.35 ppb
2016-02-18FW160107020-05_T1.26 ppb
2016-02-18FW160107020-03_T1.21 ppb
2016-05-19FW160422018-03_T5.21 ppb
2016-05-19FW160422018-06_T5.13 ppb
2016-05-19FW160422081-03_T5.01 ppb
2016-05-19FW160422081-04_T4.96 ppb
2016-05-19FW160422019-02_T4.81 ppb
2016-05-19FW160422081-06_T4.62 ppb
2016-05-19FW160422018-05_T4.46 ppb
2016-05-19FW160422018-04_T4.37 ppb
2016-05-19FW160422019-05_T4.35 ppb
2016-05-19FW160422019-06_T4.10 ppb
2016-05-19FW160422019-03_T3.95 ppb
2016-05-19FW160422081-05_T3.82 ppb
2016-05-19FW160422019-04_T3.80 ppb
2016-05-19FW160422020-02_T3.40 ppb
2016-05-19FW160422020-05_T2.96 ppb
2016-05-19FW160422020-06_T2.86 ppb
2016-08-16FW160725088-05_T7.07 ppb
2016-08-16FW160725088-03_T6.94 ppb
2016-08-16FW160725088-04_T6.88 ppb
2016-08-16FW160725088-06_T6.47 ppb
2016-08-17FW160725089-06_T5.87 ppb
2016-08-17FW160725089-05_T5.29 ppb
2016-08-17FW160725089-04_T5.06 ppb
2016-08-17FW160725089-03_T4.30 ppb
2016-08-18FW160725087-05_T7.79 ppb
2016-08-18FW160725087-03_T7.69 ppb
2016-08-18FW160725087-04_T7.35 ppb
2016-08-18FW160725086-02_T6.97 ppb
2016-08-18FW160725087-02_T6.72 ppb
2016-08-18FW160725086-06_T6.70 ppb
2016-08-18FW160725086-05_T6.35 ppb
2016-08-18FW160725087-06_T5.07 ppb
2016-11-17FW161018091-03_T7.68 ppb
2016-11-17FW161018092-05_T7.27 ppb
2016-11-17FW161018088-06_T7.19 ppb
2016-11-17FW161018092-03_T7.10 ppb
2016-11-17FW161018088-05_T7.08 ppb
2016-11-17FW161018091-02_T6.88 ppb
2016-11-17FW161018091-05_T6.56 ppb
2016-11-17FW161018092-04_T6.17 ppb
2016-11-17FW161018092-06_T5.93 ppb
2016-11-17FW161018093-06_T5.58 ppb
2016-11-17FW161018091-04_T4.72 ppb
2016-11-17FW161018088-02_T4.71 ppb
2016-11-17FW161018093-03_T4.59 ppb
2016-11-17FW161018091-06_T4.27 ppb
2016-11-17FW161018093-04_T4.14 ppb
2016-11-17FW161018093-05_T4.14 ppb
2017-02-15FW170126080-05_T3.35 ppb
2017-02-15FW170126080-03_T3.26 ppb
2017-02-15FW170126080-04_T3.14 ppb
2017-02-15FW170126080-06_T2.64 ppb
2017-02-16FW170126078-02_T4.03 ppb
2017-02-16FW170126078-05_T3.79 ppb
2017-02-16FW170126078-06_T3.58 ppb
2017-02-16FW170126079-05_T3.32 ppb
2017-02-16FW170126079-02_T3.23 ppb
2017-02-16FW170126079-03_T3.23 ppb
2017-02-16FW170126081-06_T3.10 ppb
2017-02-16FW170126079-04_T3.03 ppb
2017-02-16FW170126081-04_T2.70 ppb
2017-02-16FW170126081-03_T2.59 ppb
2017-02-16FW170126081-05_T2.46 ppb
2017-02-16FW170126079-06_T2.41 ppb
2017-05-18FW170426070-03_T2.93 ppb
2017-05-18FW170426070-04_T2.37 ppb
2017-05-18FW170426070-05_T2.17 ppb
2017-05-18FW170426071-02_T2.15 ppb
2017-05-18FW170426069-04_T2.12 ppb
2017-05-18FW170426069-05_T2.12 ppb
2017-05-18FW170426070-06_T2.07 ppb
2017-05-18FW170426068-03_T1.96 ppb
2017-05-18FW170426069-06_T1.93 ppb
2017-05-18FW170426068-04_T1.84 ppb
2017-05-18FW170426068-05_T1.81 ppb
2017-05-18FW170426069-02_T1.74 ppb
2017-05-18FW170426069-03_T1.72 ppb
2017-05-18FW170426071-05_T1.69 ppb
2017-05-18FW170426071-06_T1.68 ppb
2017-05-18FW170426068-06_T1.55 ppb
2017-08-17FW170710008-05_T7.39 ppb
2017-08-17FW170710007-03_T6.21 ppb
2017-08-17FW170710006-05_T5.94 ppb
2017-08-17FW170710006-06_T5.89 ppb
2017-08-17FW170710008-02_T5.80 ppb
2017-08-17FW170710007-05_T5.76 ppb
2017-08-17FW170710007-04_T5.58 ppb
2017-08-17FW170710008-03_T5.47 ppb
2017-08-17FW170710007-06_T5.18 ppb
2017-08-17FW170710009-06_T5.00 ppb
2017-08-17FW170710008-04_T3.71 ppb
2017-08-17FW170710006-02_T3.63 ppb
2017-08-17FW170710009-04_T3.31 ppb
2017-08-17FW170710009-05_T3.31 ppb
2017-08-17FW170710008-06_T3.21 ppb
2017-08-17FW170710009-03_T3.06 ppb
2017-11-15FW171025015-03_T3.88 ppb
2017-11-15FW171025015-05_T3.37 ppb
2017-11-15FW171025015-06_T3.33 ppb
2017-11-15FW171025015-02_T2.78 ppb
2017-11-15FW171025015-04_T2.42 ppb
2017-11-16FW171025016-04_T6.92 ppb
2017-11-16FW171025016-06_T6.26 ppb
2017-11-16FW171025014-02_T5.13 ppb
2017-11-16FW171025017-06_T4.72 ppb
2017-11-16FW171025016-05_T4.49 ppb
2017-11-16FW171025017-03_T4.07 ppb
2017-11-16FW171025014-05_T3.90 ppb
2017-11-16FW171025017-05_T3.62 ppb
2017-11-16FW171025017-04_T3.55 ppb
2017-11-16FW171025016-03_T3.40 ppb
2017-11-16FW171025014-06_T3.24 ppb