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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Baltimore

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
20150.130 ppb219ND - 0.670 ppb
2016N/A00N/A
2017ND20ND
2018ND40ND
2019ND40ND

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
2014-01-06140106_01_141000ND
2014-01-08140108_02_TREATEND
2015-01-130300002BC0113201ND
2015-02-0220526490010.220 ppb
2015-02-0220526500040.240 ppb
2015-02-0220526500010.290 ppb
2015-02-022052649004ND
2015-02-0220526460010.220 ppb
2015-04-2320672770090.240 ppb
2015-04-2320672770060.290 ppb
2015-04-2320672770040.300 ppb
2015-04-2320672770110.250 ppb
2015-04-302068175001ND
2015-07-222085075009ND
2015-07-222085075001ND
2015-07-222085075004ND
2015-07-2220850750070.670 ppb
2015-07-222085075012ND
2015-10-272104529003ND
2015-10-272104524001ND
2015-10-272104527001ND
2015-10-272104529001ND
2015-10-272104524004ND
2017-04-03TP01_17_04_03ND
2017-04-04TP01_17_04_04ND
2018-01-08180108_02ND
2018-01-18180118_01ND
2018-05-14E18004101002ND
2018-05-14E18004101003ND
2019-03-060300002_030619_TND
2019-04-060300002_040619_TND
2019-07-31E20000421003ND
2019-07-31E20000421002ND