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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Honolulu-Windward-Pearl Harbor

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

 

231

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20131.62 ppb1071070.980 ppb - 3.10 ppb
20141.82 ppb5048ND - 6.10 ppb
20151.67 ppb75ND - 2.80 ppb
20161.60 ppb331.40 ppb - 1.80 ppb
20171.75 ppb5251ND - 5.10 ppb
20181.24 ppb76ND - 2.00 ppb
20191.46 ppb551.000 ppb - 2.00 ppb

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
2013-04-01201304030421AM2.30 ppb
2013-04-01201304030419AM1.30 ppb
2013-04-01201304030417AM1.60 ppb
2013-04-01201304030423AM2.00 ppb
2013-04-02201304040561AM1.40 ppb
2013-04-02201304040555AM1.90 ppb
2013-04-02201304040557AM1.10 ppb
2013-04-02201304040553AM1.80 ppb
2013-04-02201304040551AM1.70 ppb
2013-04-02201304040559AM1.50 ppb
2013-04-02201304040549AM1.80 ppb
2013-04-03201304050212AM1.40 ppb
2013-04-03201304050216AM1.20 ppb
2013-04-03201304050214AM1.40 ppb
2013-04-03201304050206AM2.10 ppb
2013-04-03201304050210AM2.10 ppb
2013-04-03201304050208AM1.60 ppb
2013-04-05201304090180AM2.40 ppb
2013-04-05201304090174AM1.30 ppb
2013-04-05201304090178AM2.30 ppb
2013-04-05201304090182AM1.60 ppb
2013-04-05201304090176AM3.10 ppb
2013-04-08201304100359AM1.20 ppb
2013-04-08201304100367AM1.40 ppb
2013-04-08201304100361AM1.50 ppb
2013-04-08201304100365AM1.40 ppb
2013-04-08201304100363AM1.60 ppb
2013-04-08201304100357AM2.10 ppb
2013-04-09201304110566AM1.80 ppb
2013-04-09201304110570AM2.30 ppb
2013-04-09201304110572AM1.80 ppb
2013-04-09201304110568AM1.10 ppb
2013-04-10201304120417AM1.90 ppb
2013-04-10201304120419AM1.000 ppb
2013-04-10201304120421AM1.20 ppb
2013-04-12201304160082AM1.80 ppb
2013-04-12201304160086AM1.60 ppb
2013-04-12201304160070AM1.50 ppb
2013-04-15201304170635AM1.60 ppb
2013-04-15201304170633AM1.70 ppb
2013-04-16201304180487AM1.10 ppb
2013-04-16201304180489AM1.80 ppb
2013-04-17201304190454AM1.30 ppb
2013-04-17201304190456AM2.20 ppb
2013-04-19201304230200AM1.50 ppb
2013-04-19201304230198AM2.60 ppb
2013-04-22201304240299AM2.00 ppb
2013-04-22201304240301AM2.10 ppb
2013-04-23201304250519AM2.70 ppb
2013-04-24201304260160AM1.90 ppb
2013-04-24201304260158AM1.80 ppb
2013-04-26201304300275AM1.80 ppb
2013-04-26201304300183AM1.40 ppb
2013-10-01201310030508AM1.80 ppb
2013-10-01201310030504AM2.30 ppb
2013-10-01201310030506AM1.90 ppb
2013-10-01201310030502AM1.60 ppb
2013-10-02201310040387AM1.10 ppb
2013-10-02201310040383AM1.000 ppb
2013-10-02201310040385AM0.980 ppb
2013-10-04201310080411AM1.20 ppb
2013-10-04201310080415AM1.70 ppb
2013-10-04201310080413AM2.00 ppb
2013-10-04201310080419AM2.10 ppb
2013-10-04201310080417AM1.80 ppb
2013-10-04201310080421AM1.10 ppb
2013-10-07201310090449AM1.30 ppb
2013-10-07201310090445AM2.40 ppb
2013-10-07201310090447AM1.70 ppb
2013-10-08201310100584AM1.20 ppb
2013-10-08201310100582AM1.20 ppb
2013-10-08201310100578AM1.80 ppb
2013-10-08201310100580AM1.80 ppb
2013-10-09201310110394AM0.980 ppb
2013-10-09201310110396AM1.30 ppb
2013-10-11201310150231AM1.20 ppb
2013-10-11201310150225AM1.20 ppb
2013-10-11201310150229AM1.20 ppb
2013-10-11201310150233AM1.30 ppb
2013-10-11201310150227AM1.50 ppb
2013-10-14201310160251AM0.980 ppb
2013-10-14201310160255AM1.20 ppb
2013-10-14201310160257AM1.40 ppb
2013-10-14201310160253AM1.10 ppb
2013-10-15201310170263AM1.40 ppb
2013-10-16201310180369AM1.10 ppb
2013-10-16201310180365AM1.90 ppb
2013-10-16201310180363AM1.30 ppb
2013-10-16201310180367AM1.90 ppb
2013-10-16201310180458AM1.70 ppb
2013-10-16201310180456AM1.40 ppb
2013-10-16201310180371AM2.80 ppb
2013-10-16201310180361AM1.50 ppb
2013-10-18201310220217AM1.40 ppb
2013-10-18201310220215AM1.30 ppb
2013-10-18201310220219AM1.20 ppb
2013-10-18201310220228AM1.60 ppb
2013-10-21201310230542AM1.10 ppb
2013-10-21201310230540AM1.60 ppb
2013-10-21201310230538AM1.70 ppb
2013-10-21201310230577AM1.30 ppb
2013-10-21201310230575AM1.30 ppb
2013-10-22201310240443AM2.10 ppb
2013-10-22201310240445AM1.000 ppb
2013-10-23201310250245AM2.10 ppb
2013-10-23201310250247AM2.20 ppb
2013-10-23201310250249AM1.20 ppb
2014-04-012014040304661.10 ppb
2014-04-012014040304671.30 ppb
2014-04-012014040304681.30 ppb
2014-04-012014040304691.20 ppb
2014-04-022014040405502.00 ppb
2014-04-022014040405511.90 ppb
2014-04-022014040405522.10 ppb
2014-04-022014040405531.90 ppb
2014-04-02201404040554ND
2014-04-042014040806201.30 ppb
2014-04-042014040806211.40 ppb
2014-04-072014040904821.10 ppb
2014-04-07201404090483ND
2014-04-072014040904841.80 ppb
2014-04-072014040904852.10 ppb
2014-04-082014041005461.80 ppb
2014-04-082014041005472.60 ppb
2014-04-082014041005491.80 ppb
2014-04-082014041005506.10 ppb
2014-04-082014041005512.20 ppb
2014-04-092014041202563.40 ppb
2014-04-092014041202572.10 ppb
2014-04-092014041202582.10 ppb
2014-04-112014041503632.60 ppb
2014-04-142014041605512.30 ppb
2014-04-142014041605522.60 ppb
2014-04-142014041605532.20 ppb
2014-04-142014041605541.70 ppb
2014-04-142014041605551.80 ppb
2014-04-142014041605561.50 ppb
2014-04-152014041703401.50 ppb
2014-04-152014041703411.000 ppb
2014-04-152014041703421.40 ppb
2014-04-152014041703441.20 ppb
2014-04-162014041804012.70 ppb
2014-04-162014041804022.80 ppb
2014-04-162014041804032.40 ppb
2014-04-162014041804042.40 ppb
2014-04-162014041804051.50 ppb
2014-04-162014041804062.40 ppb
2014-04-212014042305991.50 ppb
2014-04-222014042402731.30 ppb
2014-04-222014042402742.00 ppb
2014-04-232014042502011.10 ppb
2014-04-232014042502021.20 ppb
2014-04-282014043006211.10 ppb
2014-05-062014050803761.80 ppb
2014-07-15201407170569AM1.50 ppb
2014-07-212014072306441.20 ppb
2014-08-192014082201681.70 ppb
2015-02-092015021103952.70 ppb
2015-02-10201502120276ND
2015-05-042015050601082.80 ppb
2015-05-272015052900832.50 ppb
2015-08-182015082004792.20 ppb
2015-10-19201510140073ND
2015-12-282015121803631.50 ppb
2016-02-091.80 ppb
2016-05-021.60 ppb
2016-10-281.40 ppb
2017-02-14ND
2017-04-032.10 ppb
2017-04-032.10 ppb
2017-04-051.80 ppb
2017-04-051.90 ppb
2017-04-111.60 ppb
2017-04-111.90 ppb
2017-04-112.90 ppb
2017-04-111.70 ppb
2017-04-172.30 ppb
2017-04-171.60 ppb
2017-04-181.20 ppb
2017-04-181.40 ppb
2017-04-192.00 ppb
2017-04-192.00 ppb
2017-04-192.00 ppb
2017-04-192.10 ppb
2017-04-191.60 ppb
2017-04-191.30 ppb
2017-04-202.00 ppb
2017-04-262.50 ppb
2017-05-011.50 ppb
2017-05-012.00 ppb
2017-05-022.40 ppb
2017-05-031.40 ppb
2017-05-031.20 ppb
2017-05-031.10 ppb
2017-05-031.80 ppb
2017-05-031.50 ppb
2017-05-041.60 ppb
2017-05-091.30 ppb
2017-05-091.30 ppb
2017-05-091.70 ppb
2017-05-101.60 ppb
2017-05-102.40 ppb
2017-05-111.000 ppb
2017-05-161.40 ppb
2017-05-161.30 ppb
2017-05-171.60 ppb
2017-05-221.40 ppb
2017-05-221.40 ppb
2017-05-221.40 ppb
2017-05-221.60 ppb
2017-05-221.30 ppb
2017-05-232.70 ppb
2017-05-231.50 ppb
2017-05-241.10 ppb
2017-05-305.10 ppb
2017-06-051.10 ppb
2017-06-062.20 ppb
2017-06-071.50 ppb
2017-06-132.40 ppb
2018-02-122018010802812.00 ppb
2018-02-202018012903071.20 ppb
2018-03-282018033003061.80 ppb
2018-04-232018042703541.40 ppb
2018-05-30201805230584ND
2018-07-252018072701831.20 ppb
2018-08-082018081101521.10 ppb
2019-07-092019062002002.00 ppb
2019-09-182019092002521.20 ppb
2019-09-252019092702201.50 ppb
2019-10-292019103102781.60 ppb
2019-12-242019121801001.000 ppb