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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

City of Alexandria

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

Trichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids 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)

317

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20125.77 ppb36362.15 ppb - 15.4 ppb
20134.92 ppb991.60 ppb - 6.00 ppb
20143.25 ppb31311.10 ppb - 8.80 ppb
20152.59 ppb16161.90 ppb - 3.80 ppb
20163.56 ppb32321.20 ppb - 10.1 ppb
20175.08 ppb3227ND - 15.9 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 trichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.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 trichloroacetic acid. Sample information shown below was taken by Fairfax County Water Authority.

Date Lab ID Result
2012-05-15FW12043002-03_HA15.4 ppb
2012-05-15FW12043002-02_HA13.0 ppb
2012-05-15FW12043002-11_HA12.5 ppb
2012-05-15FW12043002-10_HA11.8 ppb
2012-05-15FW12043002-01_HA11.7 ppb
2012-05-15FW12043002-08_HA11.5 ppb
2012-05-15FW12043002-05_HA11.5 ppb
2012-05-15FW12043002-09_HA9.72 ppb
2012-05-15FW12043002-06_HA8.78 ppb
2012-05-15FW12043002-07_HA7.75 ppb
2012-05-15FW12043002-14_HA6.63 ppb
2012-05-15FW12043002-04_HA5.16 ppb
2012-08-14FW12080120-05_HA5.00 ppb
2012-08-14FW12080120-08_HA4.85 ppb
2012-08-14FW12080120-10_HA4.70 ppb
2012-08-14FW12080120-04_HA4.61 ppb
2012-08-14FW12080120-06_HA4.54 ppb
2012-08-14FW12080120-14_HA4.44 ppb
2012-08-14FW12080120-07_HA4.06 ppb
2012-08-14FW12080120-11_HA3.36 ppb
2012-08-14FW12080120-02_HA3.17 ppb
2012-08-14FW12080120-03_HA2.96 ppb
2012-08-14FW12080120-01_HA2.88 ppb
2012-08-14FW12080120-09_HA2.72 ppb
2012-11-15FW12102514-08_HA3.78 ppb
2012-11-15FW12102514-16_HA3.69 ppb
2012-11-15FW12102514-15_HA3.66 ppb
2012-11-15FW12102514-13_HA3.54 ppb
2012-11-15FW12102514-14_HA3.49 ppb
2012-11-15FW12102514-06_HA2.50 ppb
2012-11-15FW12102514-05_HA2.50 ppb
2012-11-15FW12102514-10_HA2.47 ppb
2012-11-15FW12102514-09_HA2.45 ppb
2012-11-15FW12102514-11_HA2.35 ppb
2012-11-15FW12102514-07_HA2.28 ppb
2012-11-15FW12102514-04_HA2.15 ppb
2013-02-21FW13012811-13_HA2.16 ppb
2013-02-21FW13012811-16_HA2.10 ppb
2013-02-21FW13012811-15_HA1.97 ppb
2013-02-21FW13012811-14_HA1.90 ppb
2013-02-21FW13012811-08_HA1.78 ppb
2013-02-21FW13012811-05_HA1.18 ppb
2013-02-21FW13012811-10_HA1.15 ppb
2013-02-21FW13012811-04_HA1.11 ppb
2013-02-21FW13012811-09_HA1.09 ppb
2013-02-21FW13012811-07_HA1.08 ppb
2013-02-21FW13012811-11_HA1.07 ppb
2013-02-21FW13012811-06_HA1.07 ppb
2013-05-16FW13042632-13_HA19.5 ppb
2013-05-16FW13042632-14_HA18.0 ppb
2013-05-16FW13042632-10_HA17.4 ppb
2013-05-16FW13042632-09_HA16.9 ppb
2013-05-16FW13042632-16_HA15.2 ppb
2013-05-16FW13042632-05_HA14.9 ppb
2013-05-16FW13042632-15_HA14.6 ppb
2013-05-16FW13042632-08_HA12.3 ppb
2013-05-16FW13042632-06_HA12.2 ppb
2013-05-16FW13042632-07_HA8.68 ppb
2013-05-16FW13042632-11_HA7.92 ppb
2013-05-16FW13042632-04_HA7.26 ppb
2013-08-15FW13073116-07_HA7.97 ppb
2013-08-15FW13073116-14_HA6.72 ppb
2013-08-15FW13073116-15_HA6.16 ppb
2013-08-15FW13073116-05_HA6.04 ppb
2013-08-15FW13073116-16_HA5.92 ppb
2013-08-15FW13073116-06_HA5.91 ppb
2013-08-15FW13073116-13_HA5.85 ppb
2013-08-15FW13073116-09_HA5.45 ppb
2013-08-15FW13073116-08_HA5.40 ppb
2013-08-15FW13073116-10_HA5.08 ppb
2013-08-15FW13073116-04_HA4.03 ppb
2013-08-15FW13073116-11_HA3.07 ppb
2013-11-21FW13102431-03_HA2.43 ppb
2013-11-21FW13102431-04_HA2.31 ppb
2013-11-21FW13102431-06_HA2.27 ppb
2013-11-21FW13102430-02_HA2.18 ppb
2013-11-21FW13102431-05_HA1.98 ppb
2013-11-21FW13102429-06_HA1.28 ppb
2013-11-21FW13102429-05_HA1.24 ppb
2013-11-21FW13102429-03_HA1.22 ppb
2013-11-21FW13102430-05_HA1.19 ppb
2013-11-21FW13102429-04_HA1.19 ppb
2013-11-21FW13102430-03_HA1.19 ppb
2013-11-21FW13102430-04_HA1.15 ppb
2014-02-20FW14013105-03_HA6.21 ppb
2014-02-20FW14013105-05_HA6.20 ppb
2014-02-20FW14013105-06_HA6.15 ppb
2014-02-20FW14013105-04_HA5.46 ppb
2014-02-20FW14013104-05_HA1.43 ppb
2014-02-20FW14013104-04_HA1.42 ppb
2014-02-20FW14013107-05_HAND
2014-02-20FW14013106-04_HAND
2014-02-20FW14013104-02_HAND
2014-02-20FW14013107-03_HAND
2014-02-20FW14013107-06_HAND
2014-02-20FW14013108-03_HAND
2014-02-20FW14013108-05_HAND
2014-02-20FW14013106-02_HAND
2014-02-20FW14013108-06_HAND
2014-02-20FW14013106-03_HAND
2014-02-20FW14013108-04_HAND
2014-02-20FW14013106-05_HAND
2014-02-20FW14013107-04_HAND
2014-02-20FW14013104-03_HAND
2014-05-15FW14042361-03_HA18.3 ppb
2014-05-15FW14042361-06_HA14.3 ppb
2014-05-15FW14042361-04_HA14.0 ppb
2014-05-15FW14042362-03_HA13.0 ppb
2014-05-15FW14042362-06_HA12.6 ppb
2014-05-15FW14042362-04_HA12.5 ppb
2014-05-15FW14042361-05_HA12.2 ppb
2014-05-15FW14042362-05_HA12.2 ppb
2014-05-15FW14042403-05_HA11.8 ppb
2014-05-15FW14042403-03_HA11.1 ppb
2014-05-15FW14042360-02_HA10.4 ppb
2014-05-15FW14042360-04_HA9.59 ppb
2014-05-15FW14042360-03_HA9.33 ppb
2014-05-15FW14042403-04_HA8.77 ppb
2014-05-15FW14042359-06_HA7.75 ppb
2014-05-15FW14042403-02_HA7.11 ppb
2014-05-15FW14042359-04_HA7.03 ppb
2014-05-15FW14042360-05_HA6.78 ppb
2014-05-15FW14042359-05_HA6.61 ppb
2014-05-15FW14042359-03_HA4.34 ppb
2014-08-19FW14072252-03_HA3.05 ppb
2014-08-19FW14072252-06_HA2.83 ppb
2014-08-19FW14072252-04_HA2.72 ppb
2014-08-19FW14072252-05_HA2.48 ppb
2014-08-19FW14072250-04_HA2.13 ppb
2014-08-19FW14072250-06_HA1.96 ppb
2014-08-19FW14072250-05_HA1.82 ppb
2014-08-19FW14072250-03_HA1.80 ppb
2014-08-20FW14072251-02_HA2.66 ppb
2014-08-20FW14072251-03_HA2.21 ppb
2014-08-20FW14072251-04_HA2.19 ppb
2014-08-20FW14072251-05_HA1.94 ppb
2014-08-21FW14072253-05_HA16.5 ppb
2014-08-21FW14072253-03_HA16.5 ppb
2014-08-21FW14072253-06_HA16.4 ppb
2014-08-21FW14072253-04_HA16.0 ppb
2014-08-21FW14072254-03_HA2.56 ppb
2014-08-21FW14072254-05_HA2.01 ppb
2014-08-21FW14072254-04_HA2.00 ppb
2014-08-21FW14072254-02_HA1.92 ppb
2014-11-20FW141022070-03_H15.7 ppb
2014-11-20FW141022070-06_H12.1 ppb
2014-11-20FW141022070-05_H11.6 ppb
2014-11-20FW141022070-04_H11.0 ppb
2014-11-20FW141022073-04_H2.13 ppb
2014-11-20FW141022069-03_H2.13 ppb
2014-11-20FW141022073-05_H1.98 ppb
2014-11-20FW141022073-06_H1.95 ppb
2014-11-20FW141022072-04_H1.92 ppb
2014-11-20FW141022071-03_H1.89 ppb
2014-11-20FW141022071-04_H1.86 ppb
2014-11-20FW141022072-06_H1.83 ppb
2014-11-20FW141022071-02_H1.76 ppb
2014-11-20FW141022069-04_H1.72 ppb
2014-11-20FW141022073-03_H1.67 ppb
2014-11-20FW141022071-05_H1.64 ppb
2014-11-20FW141022072-05_H1.60 ppb
2014-11-20FW141022072-03_H1.59 ppb
2014-11-20FW141022069-05_H1.54 ppb
2014-11-20FW141022069-02_H1.52 ppb
2015-02-1900125-FAIRFAX CO7.71 ppb
2015-02-1900125-FAIRFAX CO6.40 ppb
2015-02-1900125-FAIRFAX CO6.01 ppb
2015-02-1900125-FAIRFAX CO1.03 ppb
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-1900125-FAIRFAX COND
2015-02-2300125-FAIRFAX COND
2015-02-2300125-FAIRFAX COND
2015-05-2100125-FAIRFAX CO14.8 ppb
2015-05-2100125-FAIRFAX CO14.8 ppb
2015-05-2100125-FAIRFAX CO14.5 ppb
2015-05-2100125-FAIRFAX CO13.8 ppb
2015-05-2100125-FAIRFAX CO12.0 ppb
2015-05-2100125-FAIRFAX CO11.7 ppb
2015-05-2100125-FAIRFAX CO10.1 ppb
2015-05-2100125-FAIRFAX CO9.91 ppb
2015-05-2100125-FAIRFAX CO9.91 ppb
2015-05-2100125-FAIRFAX CO9.72 ppb
2015-05-2100125-FAIRFAX CO9.59 ppb
2015-05-2100125-FAIRFAX CO9.55 ppb
2015-05-2100125-FAIRFAX CO7.96 ppb
2015-05-2100125-FAIRFAX CO7.85 ppb
2015-05-2100125-FAIRFAX CO7.11 ppb
2015-05-2100125-FAIRFAX CO6.72 ppb
2015-08-2000125-FAIRFAX CO11.6 ppb
2015-08-2000125-FAIRFAX CO11.5 ppb
2015-08-2000125-FAIRFAX CO3.45 ppb
2015-08-2000125-FAIRFAX CO3.13 ppb
2015-08-2000125-FAIRFAX CO2.97 ppb
2015-08-2000125-FAIRFAX CO2.92 ppb
2015-08-2000125-FAIRFAX CO2.82 ppb
2015-08-2000125-FAIRFAX CO2.37 ppb
2015-08-2000125-FAIRFAX CO2.28 ppb
2015-08-2000125-FAIRFAX CO2.21 ppb
2015-08-2000125-FAIRFAX CO2.15 ppb
2015-08-2000125-FAIRFAX CO2.04 ppb
2015-08-2000125-FAIRFAX CO2.04 ppb
2015-08-2000125-FAIRFAX CO2.01 ppb
2015-08-2000125-FAIRFAX CO2.00 ppb
2015-08-2000125-FAIRFAX COND
2015-11-2000125-FAIRFAX CO8.08 ppb
2015-11-2000125-FAIRFAX CO3.61 ppb
2015-11-2000125-FAIRFAX CO2.11 ppb
2015-11-2000125-FAIRFAX CO2.02 ppb
2015-11-2000125-FAIRFAX CO2.00 ppb
2015-11-2000125-FAIRFAX CO1.89 ppb
2015-11-2000125-FAIRFAX CO1.61 ppb
2015-11-2000125-FAIRFAX CO1.55 ppb
2015-11-2000125-FAIRFAX CO1.43 ppb
2015-11-2000125-FAIRFAX CO1.43 ppb
2015-11-2000125-FAIRFAX CO1.37 ppb
2015-11-2000125-FAIRFAX CO1.27 ppb
2015-11-2000125-FAIRFAX CO1.20 ppb
2015-11-2000125-FAIRFAX CO1.19 ppb
2015-11-2000125-FAIRFAX CO1.19 ppb
2015-11-2000125-FAIRFAX COND
2016-02-18FW160107017-02_H11.1 ppb
2016-02-18FW160107017-06_H5.74 ppb
2016-02-18FW160107017-05_H5.64 ppb
2016-02-18FW160107020-05_H1.27 ppb
2016-02-18FW160107020-04_H1.20 ppb
2016-02-18FW160107019-06_H1.17 ppb
2016-02-18FW160107020-03_H1.06 ppb
2016-02-18FW160107018-03_HND
2016-02-18FW160107018-04_HND
2016-02-18FW160107018-05_HND
2016-02-18FW160107018-06_HND
2016-02-18FW160107019-02_HND
2016-02-18FW160107019-03_HND
2016-02-18FW160107019-04_HND
2016-02-18FW160107019-05_HND
2016-02-18FW160107020-06_HND
2016-05-19FW160422018-03_H17.5 ppb
2016-05-19FW160422020-02_H16.8 ppb
2016-05-19FW160422020-06_H13.7 ppb
2016-05-19FW160422020-05_H12.7 ppb
2016-05-19FW160422018-04_H12.4 ppb
2016-05-19FW160422018-05_H12.1 ppb
2016-05-19FW160422019-05_H11.9 ppb
2016-05-19FW160422019-03_H10.1 ppb
2016-05-19FW160422081-05_H9.68 ppb
2016-05-19FW160422019-04_H9.26 ppb
2016-05-19FW160422018-06_H8.54 ppb
2016-05-19FW160422019-06_H7.89 ppb
2016-05-19FW160422019-02_H7.30 ppb
2016-05-19FW160422081-03_H5.80 ppb
2016-05-19FW160422081-04_H4.98 ppb
2016-05-19FW160422081-06_H2.74 ppb
2016-08-16FW160725088-03_H4.29 ppb
2016-08-16FW160725088-04_H3.96 ppb
2016-08-16FW160725088-06_H3.73 ppb
2016-08-16FW160725088-05_H3.68 ppb
2016-08-17FW160725089-06_H3.31 ppb
2016-08-17FW160725089-05_H3.15 ppb
2016-08-17FW160725089-03_H2.85 ppb
2016-08-17FW160725089-04_H2.84 ppb
2016-08-18FW160725086-02_H17.9 ppb
2016-08-18FW160725086-06_H15.2 ppb
2016-08-18FW160725086-05_H13.2 ppb
2016-08-18FW160725087-03_H4.36 ppb
2016-08-18FW160725087-04_H4.00 ppb
2016-08-18FW160725087-05_H3.90 ppb
2016-08-18FW160725087-02_H3.79 ppb
2016-08-18FW160725087-06_H3.00 ppb
2016-11-17FW161018088-05_H2.33 ppb
2016-11-17FW161018088-06_H2.22 ppb
2016-11-17FW161018092-03_H2.09 ppb
2016-11-17FW161018091-05_H2.06 ppb
2016-11-17FW161018091-02_H2.04 ppb
2016-11-17FW161018092-05_H1.97 ppb
2016-11-17FW161018093-06_H1.96 ppb
2016-11-17FW161018091-03_H1.95 ppb
2016-11-17FW161018092-06_H1.90 ppb
2016-11-17FW161018092-04_H1.85 ppb
2016-11-17FW161018093-03_H1.73 ppb
2016-11-17FW161018091-04_H1.56 ppb
2016-11-17FW161018093-04_H1.55 ppb
2016-11-17FW161018093-05_H1.55 ppb
2016-11-17FW161018091-06_H1.53 ppb
2016-11-17FW161018088-02_HND
2017-02-15FW170126080-04_H1.17 ppb
2017-02-15FW170126080-05_H1.15 ppb
2017-02-15FW170126080-03_H1.14 ppb
2017-02-15FW170126080-06_H1.12 ppb
2017-02-16FW170126078-05_H5.62 ppb
2017-02-16FW170126078-02_H5.58 ppb
2017-02-16FW170126078-06_H4.65 ppb
2017-02-16FW170126081-05_H2.00 ppb
2017-02-16FW170126081-03_H1.90 ppb
2017-02-16FW170126081-04_H1.86 ppb
2017-02-16FW170126079-06_H1.73 ppb
2017-02-16FW170126081-06_H1.70 ppb
2017-02-16FW170126079-04_H1.35 ppb
2017-02-16FW170126079-05_H1.27 ppb
2017-02-16FW170126079-03_H1.12 ppb
2017-02-16FW170126079-02_H1.11 ppb
2017-05-18FW170426070-03_H25.4 ppb
2017-05-18FW170426069-04_H24.7 ppb
2017-05-18FW170426070-04_H22.6 ppb
2017-05-18FW170426069-05_H22.2 ppb
2017-05-18FW170426069-06_H20.2 ppb
2017-05-18FW170426069-03_H18.2 ppb
2017-05-18FW170426070-05_H17.8 ppb
2017-05-18FW170426070-06_H17.4 ppb
2017-05-18FW170426071-06_H16.9 ppb
2017-05-18FW170426069-02_H16.6 ppb
2017-05-18FW170426068-05_H16.5 ppb
2017-05-18FW170426068-03_H16.2 ppb
2017-05-18FW170426068-04_H14.9 ppb
2017-05-18FW170426071-05_H14.9 ppb
2017-05-18FW170426071-02_H10.8 ppb
2017-05-18FW170426068-06_H10.2 ppb
2017-08-17FW170710006-06_H8.98 ppb
2017-08-17FW170710006-05_H7.11 ppb
2017-08-17FW170710009-06_H4.53 ppb
2017-08-17FW170710007-03_H4.49 ppb
2017-08-17FW170710008-05_H4.34 ppb
2017-08-17FW170710008-02_H4.26 ppb
2017-08-17FW170710008-03_H4.14 ppb
2017-08-17FW170710007-05_H4.12 ppb
2017-08-17FW170710008-06_H4.11 ppb
2017-08-17FW170710009-05_H4.10 ppb
2017-08-17FW170710009-04_H3.97 ppb
2017-08-17FW170710009-03_H3.88 ppb
2017-08-17FW170710007-06_H3.59 ppb
2017-08-17FW170710007-04_H3.56 ppb
2017-08-17FW170710008-04_H3.56 ppb
2017-08-17FW170710006-02_H1.07 ppb
2017-11-15FW171025015-04_H3.76 ppb
2017-11-15FW171025015-05_H3.36 ppb
2017-11-15FW171025015-02_H3.04 ppb
2017-11-15FW171025015-03_H2.40 ppb
2017-11-15FW171025015-06_H1.78 ppb
2017-11-16FW171025014-06_H12.3 ppb
2017-11-16FW171025014-05_H10.8 ppb
2017-11-16FW171025017-06_H3.05 ppb
2017-11-16FW171025016-05_H2.75 ppb
2017-11-16FW171025016-03_H2.58 ppb
2017-11-16FW171025017-05_H2.39 ppb
2017-11-16FW171025016-04_H2.37 ppb
2017-11-16FW171025017-04_H2.26 ppb
2017-11-16FW171025016-06_H2.22 ppb
2017-11-16FW171025017-03_H2.09 ppb
2017-11-16FW171025014-02_HND