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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Fairfax County Water Authority

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

MORE ABOUT THIS CONTAMINANT

 

68

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND140ND
2014ND220ND
2015ND40ND
2016ND40ND
2017ND80ND
2018ND80ND
2019ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-07-17201307180828AMND
2013-07-17201307180824AMND
2013-07-17201307180801AMND
2013-07-17201307180799AMND
2013-07-17201307180822AMND
2013-07-17201307180811AMND
2013-07-17201307180820AMND
2013-10-15201310160246AMND
2013-10-15201310160210AMND
2013-10-15201310160200AMND
2013-10-15201310160176AMND
2013-10-15201310160240AMND
2013-10-15201310160208AMND
2013-10-15201310160171AMND
2014-01-13201401150357AMND
2014-01-13201401150723AMND
2014-01-13201401150380AMND
2014-01-13201401150621AMND
2014-01-13201401140197AMND
2014-01-13201401140199AMND
2014-01-14201401150684AMND
2014-01-30FW13122702-03_MEND
2014-01-30FW13122701-03_MEND
2014-04-14201404150283AMND
2014-04-14201404150254AMND
2014-04-14201404150281AMND
2014-04-14201404150441AMND
2014-04-14201404150439AMND
2014-04-14201404150219AMND
2014-04-14201404150405AMND
2014-04-24FW14032669-03_MEND
2014-04-24FW14032670-03_MEND
2014-07-24FW14061906-03_MEND
2014-07-24FW14061907-03_MEND
2014-10-30FW140923099-03_MND
2014-10-30FW140923098-03_MND
2015-01-2700125-FAIRFAX COND
2015-04-0900125-FAIRFAX COND
2015-07-0900125-FAIRFAX COND
2015-10-1500125-FAIRFAX COND
2016-01-14FW151231001-02_MND
2016-04-14FW160316067-02_MND
2016-07-14FW160617069-02_MND
2016-10-13FW160922038-02_MND
2017-01-26FW161216028-03_MND
2017-01-26FW161216029-03_MND
2017-04-13FW170328069-03_MND
2017-04-13FW170328070-03_MND
2017-07-13FW170628091-03_MND
2017-07-13FW170628092-03_MND
2017-10-12FW170927067-03_MND
2017-10-12FW170927068-03_MND
2018-01-25FW171226071-04_MND
2018-01-25FW171226072-04_MND
2018-04-12FW180315012-04_MND
2018-04-12FW180315013-04_MND
2018-07-12FW180615025-04_MND
2018-07-12FW180615026-04_MND
2018-10-11FW180926085-04_MND
2018-10-11FW180926086-02_MND
2019-01-03FW181218030-04_MND
2019-01-03FW181218031-02_MND
2019-04-11FW190319016-02_MND
2019-04-11FW190319015-05_MND
2019-07-11FW190626015-02_MND
2019-07-11FW190626014-05_MND
2019-10-03FW190923068-02_MND
2019-10-03FW190923067-05_MND