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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Wailuku

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

 

87

Samples

0

Samples exceeding legal limit (MCL)

87

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.51 ppb65650.650 ppb - 2.90 ppb
20151.51 ppb22220.750 ppb - 2.90 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined 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. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-20201405220346AM1.20 ppb
2014-05-20201405220596AM1.40 ppb
2014-05-20201405220487AM2.10 ppb
2014-05-20201405220517AM1.000 ppb
2014-05-20201405220350AM1.30 ppb
2014-05-20201405220348AM1.90 ppb
2014-05-20201405220365AM1.10 ppb
2014-05-20201405220374AM2.70 ppb
2014-05-20201405220352AM0.760 ppb
2014-05-20201405220363AM1.20 ppb
2014-05-20201405220354AM2.90 ppb
2014-05-20201405220359AM2.10 ppb
2014-05-20201405220552AM1.20 ppb
2014-05-20201405220511AM0.870 ppb
2014-05-20201405220560AM1.000 ppb
2014-05-20201405220557AM2.90 ppb
2014-05-20201405220514AM1.20 ppb
2014-05-20201405220554AM1.20 ppb
2014-05-21201405220376AM1.20 ppb
2014-05-21201405220356AM0.910 ppb
2014-05-21201405230211AM2.40 ppb
2014-08-18201408200301AM2.10 ppb
2014-08-18201408200640AM1.20 ppb
2014-08-18201408200308AM1.40 ppb
2014-08-18201408200495AM1.10 ppb
2014-08-18201408200593AM1.000 ppb
2014-08-18201408200629AM0.660 ppb
2014-08-18201408200642AM0.960 ppb
2014-08-18201408200666AM2.80 ppb
2014-08-18201408210408AM0.860 ppb
2014-08-18201408200675AM1.20 ppb
2014-08-18201408200604AM1.20 ppb
2014-08-18201408200180AM1.10 ppb
2014-08-18201408200242AM1.20 ppb
2014-08-18201408200238AM2.00 ppb
2014-08-18201408200221AM1.10 ppb
2014-08-18201408200170AM2.60 ppb
2014-08-18201408200174AM1.90 ppb
2014-08-18201408200185AM0.850 ppb
2014-08-18201408200240AM0.650 ppb
2014-08-18201408200162AM1.20 ppb
2014-08-28201409030643AM2.60 ppb
2014-08-28201409030634AM2.40 ppb
2014-11-17201411190330AM1.40 ppb
2014-11-17201411190543AM0.920 ppb
2014-11-17201411190553AM1.20 ppb
2014-11-17201411190539AM1.10 ppb
2014-11-17201411190551AM2.90 ppb
2014-11-17201411190535AM1.30 ppb
2014-11-17201411190501AM1.000 ppb
2014-11-17201411190281AM1.20 ppb
2014-11-17201411190349AM2.60 ppb
2014-11-17201411190711AM1.10 ppb
2014-11-18201411200621AM0.670 ppb
2014-11-18201411200530AM0.650 ppb
2014-11-18201411200526AM1.10 ppb
2014-11-18201411200624AM0.910 ppb
2014-11-18201411200618AM1.20 ppb
2014-11-18201411200408AM1.80 ppb
2014-11-18201411200448AM2.30 ppb
2014-11-18201411200419AM1.40 ppb
2014-11-19201411210530AM2.20 ppb
2014-11-28201412020247AM2.90 ppb
2014-12-03201412050325AM1.20 ppb
2014-12-03201412050326AM2.30 ppb
2015-02-17201502191096AM1.40 ppb
2015-02-17201502191041AM1.10 ppb
2015-02-17201502191171AM1.20 ppb
2015-02-17201502191121AM1.20 ppb
2015-02-17201502191114AM1.20 ppb
2015-02-17201502191117AM1.20 ppb
2015-02-17201502191123AM0.910 ppb
2015-02-17201502191080AM2.10 ppb
2015-02-17201502191074AM1.10 ppb
2015-02-17201502191192AM2.60 ppb
2015-02-17201502191131AM1.000 ppb
2015-02-17201502191084AM2.30 ppb
2015-02-17201502191088AM2.90 ppb
2015-02-17201502191194AM2.90 ppb
2015-02-17201502191043AM1.10 ppb
2015-02-17201502191082AM1.50 ppb
2015-02-17201502191092AM1.10 ppb
2015-02-17201502191187AM2.10 ppb
2015-02-18201502200401AM0.800 ppb
2015-02-18201502210064AM1.90 ppb
2015-02-18201502210062AM0.890 ppb
2015-02-20201502230428AM0.750 ppb