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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Bayleaf Master

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.

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422

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.573 ppb13469ND - 9.90 ppb
20150.578 ppb15467ND - 11.0 ppb
2016ND300ND
2017ND310ND
2018ND410ND
2019ND320ND

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
2014-01-06C316051-01ND
2014-01-09C316075-01ND
2014-01-16C316057-01ND
2014-01-20C316036-01ND
2014-01-27C316043-01ND
2014-02-04C316006-01ND
2014-02-04C316006-02ND
2014-02-04C316006-03ND
2014-02-04C316012-01ND
2014-02-24C316040-01ND
2014-02-24C316040-02ND
2014-02-26C316016-01ND
2014-04-03C404032-01ND
2014-04-10C403006-01ND
2014-04-15C404039-01ND
2014-04-22C404024-01ND
2014-05-08C402985-01ND
2014-07-08C407788-01ND
2014-07-10C407790-01ND
2014-07-16C407806-01ND
2014-07-16C407806-02ND
2014-07-16C408013-01ND
2014-07-21C407811-01ND
2014-07-21C408792-01ND
2014-07-31C407800-01ND
2014-08-04C409899-01ND
2014-08-04C409899-02ND
2014-08-20C407812-01ND
2014-08-27C410829-02ND
2014-09-08201409101000AM0.500 ppb
2014-09-08201409090419AM0.470 ppb
2014-09-08201409090404AM2.20 ppb
2014-09-08201409090438AMND
2014-09-08201409100862AMND
2014-09-08201409100867AMND
2014-09-08201409100785AM1.60 ppb
2014-09-08201409110309AMND
2014-09-08201409090509AM0.210 ppb
2014-09-08201409090398AMND
2014-09-08201409101010AMND
2014-09-10201409110836AM0.860 ppb
2014-09-10201409110641AM1.50 ppb
2014-09-10201409110842AM0.500 ppb
2014-09-10201409110623AM0.600 ppb
2014-09-10201409120792AM0.530 ppb
2014-09-10201409110611AM0.440 ppb
2014-09-10201409120849AMND
2014-09-10201409110733AM0.340 ppb
2014-09-10201409120846AMND
2014-09-11201409120824AM0.340 ppb
2014-09-11201409120556AM1.20 ppb
2014-09-11201409120586AMND
2014-09-11201409120566AMND
2014-09-11201409120561AMND
2014-09-15201409160528AM0.210 ppb
2014-09-15201409160512AM1.000 ppb
2014-09-15201409170392AMND
2014-09-15201409160641AM0.770 ppb
2014-09-15201409160280AMND
2014-09-15201409160643AM0.620 ppb
2014-09-15201409160517AM0.270 ppb
2014-09-15201409160409AMND
2014-09-15201409170410AM0.490 ppb
2014-09-15201409170404AMND
2014-09-16201409180294AMND
2014-09-16201409170769AM0.220 ppb
2014-09-16201409170773AM9.90 ppb
2014-09-16201409180308AM4.30 ppb
2014-09-16201409180359AM0.210 ppb
2014-09-16201409180283AMND
2014-09-16201409170859AMND
2014-09-17C411467-01ND
2014-09-18201409190437AMND
2014-09-18201409190422AMND
2014-09-18201409190468AM0.490 ppb
2014-09-18201409190443AM2.30 ppb
2014-09-18201409190451AM0.360 ppb
2014-09-18201409190433AMND
2014-09-18201409190431AMND
2014-09-22201409230403AM2.40 ppb
2014-09-22201409230393AM0.830 ppb
2014-09-22201409230540AMND
2014-09-22201409230171AMND
2014-09-22201409230358AM1.40 ppb
2014-09-22201409230411AM0.300 ppb
2014-09-22201409230408AM2.70 ppb
2014-09-22201409230330AM0.440 ppb
2014-09-22201409230349AM0.370 ppb
2014-09-22201409230354AM0.740 ppb
2014-09-22201409230206AM0.580 ppb
2014-09-23201409240562AM0.300 ppb
2014-09-23201409240435AM0.220 ppb
2014-09-23201409240366AM0.200 ppb
2014-09-23201409240473AMND
2014-09-23201409240461AM1.30 ppb
2014-09-23201409240424AM0.600 ppb
2014-09-23201409240383AM0.860 ppb
2014-09-23201409240488AM1.50 ppb
2014-09-23201409240422AM0.420 ppb
2014-09-23201409240506AM0.260 ppb
2014-09-24201409250594AM1.30 ppb
2014-09-24201409250539AM3.00 ppb
2014-09-24201409250492AM0.580 ppb
2014-09-24201409250589AM1.000 ppb
2014-09-24201409250494AM2.30 ppb
2014-09-24201409250629AM0.270 ppb
2014-09-24201409250601AM0.870 ppb
2014-09-24201409250487AMND
2014-09-24201409250506AM2.00 ppb
2014-09-24201409250599AMND
2014-09-24201409250633AM2.20 ppb
2014-09-24201409250623AM1.10 ppb
2014-09-24201409250619AM0.700 ppb
2014-09-24201409250587AM0.240 ppb
2014-09-24201409250627AM0.200 ppb
2014-10-22201410230493AM2.80 ppb
2014-10-22201410230342AM2.00 ppb
2014-10-22201410230275AMND
2014-10-22201410230321AMND
2014-10-22201410230327AMND
2014-10-22201410230435AM1.40 ppb
2014-10-22201410230283AMND
2014-10-22201410230491AM0.230 ppb
2014-10-23201410240152AM1.10 ppb
2014-10-23201410240192AM2.00 ppb
2014-10-28201410290232AM0.320 ppb
2014-10-28201410290230AM1.50 ppb
2014-10-28201410290234AM0.570 ppb
2014-10-28201410290225AMND
2014-10-28201410290228AM0.700 ppb
2014-10-28201410290374AM0.560 ppb
2014-10-29201410300247AMND
2014-10-29201410300244AMND
2014-10-29201410300253AMND
2015-01-07ND
2015-01-07ND
2015-01-07ND
2015-01-15ND
2015-01-15ND
2015-01-19ND
2015-01-19ND
2015-01-19ND
2015-01-20ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-28ND
2015-01-29ND
2015-01-30ND
2015-01-30ND
2015-02-03ND
2015-03-02201503030745AMND
2015-03-02201503030747AMND
2015-03-02201503030260AMND
2015-03-02201503030753AM2.10 ppb
2015-03-02201503030262AMND
2015-03-02201503030398AM0.600 ppb
2015-03-02201503030313AMND
2015-03-02201503030421AMND
2015-03-03201503040347AM0.760 ppb
2015-03-03201503040340AMND
2015-03-03201503040447AM0.360 ppb
2015-03-03201503040312AMND
2015-03-03201503040382AM2.40 ppb
2015-03-03201503040756AM0.370 ppb
2015-03-03201503040753AM1.000 ppb
2015-03-03201503040768AM1.30 ppb
2015-03-03201503040430AMND
2015-03-03201503040772AM0.850 ppb
2015-03-03201503040385AM0.970 ppb
2015-03-03201503040468AM0.490 ppb
2015-03-04201503050520AM0.560 ppb
2015-03-04201503050466AM0.910 ppb
2015-03-04201503050451AMND
2015-03-04201503050468AM1.50 ppb
2015-03-04201503050481AM1.40 ppb
2015-03-04201503050555AMND
2015-03-04201503050477AMND
2015-03-04201503050479AMND
2015-03-05201503060133AM4.10 ppb
2015-03-05201503060336AMND
2015-03-05201503060180AM0.240 ppb
2015-03-05201503060339AMND
2015-03-05201503060334AMND
2015-03-05201503060186AM1.50 ppb
2015-03-05201503060315AM1.60 ppb
2015-03-05201503060182AM0.320 ppb
2015-03-09201503100534AMND
2015-03-09201503110233AM0.290 ppb
2015-03-09201503110200AMND
2015-03-09201503100899AMND
2015-03-09201503100583AM1.20 ppb
2015-03-09201503110239AM11.0 ppb
2015-03-09201503100581AM4.00 ppb
2015-03-09201503100585AMND
2015-03-09201503100901AM0.750 ppb
2015-03-09201503100601AM0.260 ppb
2015-03-09201503110210AMND
2015-03-09201503100919AMND
2015-03-10201503110880AM1.30 ppb
2015-03-10201503110874AM0.520 ppb
2015-03-10201503120188AMND
2015-03-10201503120191AM0.960 ppb
2015-03-10201503120234AM0.930 ppb
2015-03-10201503110945AMND
2015-03-10201503120240AM0.340 ppb
2015-03-10201503120238AM0.490 ppb
2015-03-10201503120185AM1.10 ppb
2015-03-10201503120242AM0.440 ppb
2015-03-10201503110872AM0.380 ppb
2015-03-10201503110931AM0.480 ppb
2015-03-11201503130171AM1.20 ppb
2015-03-11201503130153AM0.220 ppb
2015-03-11201503130173AM0.210 ppb
2015-03-11201503120554AM0.220 ppb
2015-03-11201503130131AMND
2015-03-11201503130148AMND
2015-03-11201503130143AM1.20 ppb
2015-03-11201503130166AM0.300 ppb
2015-03-11201503130164AMND
2015-03-12201503140176AM0.320 ppb
2015-03-12201503140206AM0.770 ppb
2015-03-12201503140179AMND
2015-03-12201503140204AM1.90 ppb
2015-03-12201503140187AM1.000 ppb
2015-03-12201503130169AMND
2015-03-12201503140191AM3.00 ppb
2015-03-12201503140202AMND
2015-03-12201503140172AMND
2015-03-12201503140189AMND
2015-03-12201503140197AMND
2015-03-16201503170673AM0.940 ppb
2015-03-16201503170735AM0.610 ppb
2015-03-16201503170561AMND
2015-03-16201503170490AMND
2015-03-16201503170715AMND
2015-03-16201503170717AMND
2015-03-16201503170675AM0.520 ppb
2015-03-16201503170540AM0.500 ppb
2015-03-16201503170679AM0.370 ppb
2015-03-16201503170719AMND
2015-03-16201503170523AM0.500 ppb
2015-03-17201503180515AM1.40 ppb
2015-03-17201503180830AMND
2015-03-17201503180484AM0.460 ppb
2015-03-17201503180738AM0.610 ppb
2015-03-17201503180528AMND
2015-03-17201503180548AM3.80 ppb
2015-03-17201503180446AM11.0 ppb
2015-03-17201503180461AM0.280 ppb
2015-03-17201503180467AM2.60 ppb
2015-03-17201503180736AMND
2015-03-17201503180819AMND
2015-03-17201503180519AMND
2015-03-18201503190491AM0.420 ppb
2015-03-18201503190562AMND
2015-03-18201503190489AM0.340 ppb
2015-03-18201503190548AM2.70 ppb
2015-03-18201503190524AM1.30 ppb
2015-03-18201503190508AMND
2015-03-24ND
2015-03-24ND
2015-03-30201503160248AM0.460 ppb
2015-03-30201503160246AM1.60 ppb
2015-03-30201503160250AMND
2015-03-30201503160249AM0.450 ppb
2015-04-06ND
2015-04-08ND
2015-04-20ND
2015-04-23ND
2015-04-24ND
2015-05-06ND
2015-07-16ND
2015-07-21ND
2015-07-23ND
2015-10-07ND
2015-10-07ND
2015-10-07ND
2015-10-07ND
2015-10-07ND
2015-10-07ND
2015-10-14ND
2015-10-21ND
2015-10-21ND
2015-11-18ND
2015-12-03ND
2015-12-10ND
2016-01-04C515806-01ND
2016-01-06C515770-01ND
2016-01-07C515766-01ND
2016-01-07C515772-01ND
2016-01-07C515776-01ND
2016-01-07C515782-01ND
2016-01-07C515787-01ND
2016-01-07C515824-01ND
2016-01-13C515801-01ND
2016-01-13C515801-02ND
2016-03-17C515831-01ND
2016-03-23CZ02853-01ND
2016-04-18CZ03128-01ND
2016-04-19CZ03119-02ND
2016-04-20CZ03124-02ND
2016-04-20CZ03163-01ND
2016-04-20CZ03163-02ND
2016-04-25CZ05708-01ND
2016-05-03CZ03137-02ND
2016-05-16CZ03159-01ND
2016-05-17CZ07300-01ND
2016-05-19CZ07383-01ND
2016-06-14CZ09075-01ND
2016-07-21CZ08296-01ND
2016-10-03CZ13730-01ND
2016-10-12CZ13735-01ND
2016-10-14CZ13738-01ND
2016-10-14CZ13741-01ND
2016-11-09CZ13736-01ND
2016-11-09CZ13736-02ND
2017-01-16CZ18688-01ND
2017-01-17CZ18653-01ND
2017-01-17CZ18675-01ND
2017-01-17CZ18682-01ND
2017-01-17CZ19034-01ND
2017-01-18CA00819-01ND
2017-01-18CZ18679-01ND
2017-01-18CZ18679-02ND
2017-01-19CZ18713-01ND
2017-01-20CZ18657-01ND
2017-03-29CZ18694-01ND
2017-03-30CA05012-01ND
2017-04-17CA02813-01ND
2017-04-17CA02835-01ND
2017-05-05CA02840-01ND
2017-05-17CA02858-01ND
2017-06-02CA02817-01ND
2017-07-10CA07666-02ND
2017-07-13CA07689-01ND
2017-07-19CA07674-01ND
2017-07-19CA07679-01ND
2017-07-19CA07690-01ND
2017-07-19CA07690-02ND
2017-07-19CA07690-03ND
2017-07-19CA07693-01ND
2017-07-20CA07879-01ND
2017-07-21CA11119-01ND
2017-08-02CA07684-02ND
2017-08-09CA07672-01ND
2017-08-16CA12508-01ND
2017-08-30CA12467-01ND
2018-01-15CA18133-01 ND
2018-01-15CA18134-01 ND
2018-01-15CA18134-02 ND
2018-01-22CA18130-02 ND
2018-01-23CA18132-01 ND
2018-01-23CA18132-02 ND
2018-01-23CB00989-01 ND
2018-01-24CA18116-01 ND
2018-01-29CA18141-01 ND
2018-01-31CA18114-01 ND
2018-01-31CA18139-01 ND
2018-01-31CA18193-04 ND
2018-02-01CB01533-01 ND
2018-02-01CB01533-02 ND
2018-02-20CB02384-01 ND
2018-02-21CA18175-01 ND
2018-02-21CA18187-01 ND
2018-02-22CA18171-01 ND
2018-02-22CA18173-01 ND
2018-04-02CB03258-01 ND
2018-04-16CB03266-01 ND
2018-04-18CB03229-01 ND
2018-04-18CB03247-01 ND
2018-04-19CB03222-01 ND
2018-04-25CB03262-01 ND
2018-07-20CB08096-01 ND
2018-07-25CB08090-01 ND
2018-07-25CB08097-01 ND
2018-09-25CB14498-01 ND
2018-10-16CB14299-01 ND
2018-10-23CB14302-01 ND
2018-10-23CB14304-01 ND
2018-10-26CB14301-01 ND
2018-10-26CB14301-02 ND
2018-10-26CB14301-03 ND
2018-10-26CB14301-04 ND
2018-10-26CB14301-05 ND
2018-10-26CB14301-06 ND
2018-10-26CB14301-07 ND
2018-10-26CB14301-08 ND
2018-10-26CB14301-09 ND
2019-01-15CB18633-01 ND
2019-01-15CB18633-02 ND
2019-01-16CB18616-01 ND
2019-01-23CB18599-01 ND
2019-01-23CB18603-01 ND
2019-01-23CB18605-01 ND
2019-01-31CB18609-01 ND
2019-02-05CB18664-01 ND
2019-02-15CB18657-01 ND
2019-02-21CB18620-01 ND
2019-03-12CB18636-01 ND
2019-03-26CB19049-01 ND
2019-04-15CC04000-01 ND
2019-04-15CC04000-02 ND
2019-04-15CC04000-03 ND
2019-04-17CC04012-01 ND
2019-04-17CC04051-01 ND
2019-04-17CC04051-02 ND
2019-04-24CC04047-01 ND
2019-04-25CC06328-01 ND
2019-05-08CC04006-01 ND
2019-05-08CC04006-02 ND
2019-05-08CC04022-01 ND
2019-05-08CC04022-02 ND
2019-06-04CC08605-01 ND
2019-09-16CC10478-01 ND
2019-10-30CC15776-01 ND
2019-10-31CC15774-01 ND
2019-10-31CC15774-02 ND
2019-11-07CC15778-01 ND
2019-12-20CC15769-01 ND
2019-12-30CC15772-01 ND