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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Waipahu-Ewa-Waianae

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20131.88 ppb1817ND - 8.80 ppb
20141.52 ppb4737ND - 9.00 ppb
20153.50 ppb76ND - 10.00 ppb
20161.70 ppb221.30 ppb - 2.10 ppb
20171.72 ppb2014ND - 8.20 ppb
20181.40 ppb111.40 ppb
20192.10 ppb112.10 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
2013-07-01201307030663AM0.500 ppb
2013-07-01201307030661AM1.60 ppb
2013-07-01201307030685AMND
2013-07-01201307030712AM3.20 ppb
2013-07-01201307030716AM1.20 ppb
2013-07-01201307030714AM5.50 ppb
2013-07-01201307030687AM0.930 ppb
2013-07-05201307090226AM1.60 ppb
2013-07-05201307090228AM1.20 ppb
2013-07-05201307090222AM1.30 ppb
2013-07-08201307100914AM0.760 ppb
2013-07-08201307100908AM1.30 ppb
2013-07-08201307100910AM1.40 ppb
2013-07-08201307100916AM0.760 ppb
2013-07-08201307100912AM0.790 ppb
2013-07-09201307110697AM8.80 ppb
2013-07-09201307110695AM1.40 ppb
2013-07-09201307110708AM1.60 ppb
2014-01-03201401070165AM1.20 ppb
2014-01-04201401070157AM0.700 ppb
2014-01-05201401070162AM1.30 ppb
2014-01-06201401080575AM0.590 ppb
2014-01-06201401080571AM1.60 ppb
2014-01-06201401080573AM2.70 ppb
2014-01-06201401080569AM1.10 ppb
2014-01-07201401090458AM5.10 ppb
2014-01-07201401090460AM1.20 ppb
2014-01-08201401100236AM1.60 ppb
2014-01-08201401100234AM1.30 ppb
2014-01-10201401140240AM1.30 ppb
2014-01-10201401140236AM7.60 ppb
2014-01-10201401140234AM0.800 ppb
2014-01-11201401140238AM0.640 ppb
2014-01-12201401140232AM0.760 ppb
2014-01-13201401150663ND
2014-01-14201401160434AM0.600 ppb
2014-01-14201401160432AM1.000 ppb
2014-01-152014011703771.40 ppb
2014-01-152014011703882.00 ppb
2014-01-18201401220225ND
2014-01-182014012202261.20 ppb
2014-01-182014012202271.40 ppb
2014-01-18201401220228ND
2014-01-21201401230462ND
2014-01-21201401230463ND
2014-01-212014012304645.20 ppb
2014-01-212014012304655.60 ppb
2014-01-242014012804041.40 ppb
2014-01-242014012804051.40 ppb
2014-01-242014012804531.60 ppb
2014-01-252014012804079.00 ppb
2014-01-262014012804321.000 ppb
2014-01-262014012804061.20 ppb
2014-01-292014013101661.70 ppb
2014-01-302014020100051.10 ppb
2014-02-04201402050148ND
2014-02-042014020501491.50 ppb
2014-02-18201402200355ND
2014-03-052014030702051.20 ppb
2014-04-04201404080622ND
2014-06-04201406100325AM0.740 ppb
2014-06-16201406180445AM1.20 ppb
2014-07-15201407170579AM0.340 ppb
2014-07-23201407250222ND
2014-07-23201407250456ND
2015-01-13201501150509AM0.230 ppb
2015-03-31201504020267ND
2015-05-112015051305571.40 ppb
2015-08-3120150902019310.00 ppb
2015-08-3120150902019410.00 ppb
2015-09-292015100102241.10 ppb
2015-12-282015121803641.80 ppb
2016-11-141.30 ppb
2016-12-142.10 ppb
2017-01-095.80 ppb
2017-01-10ND
2017-01-10ND
2017-01-10ND
2017-01-11ND
2017-01-241.30 ppb
2017-01-241.70 ppb
2017-01-251.80 ppb
2017-01-261.10 ppb
2017-02-021.50 ppb
2017-02-081.70 ppb
2017-02-13ND
2017-02-133.20 ppb
2017-02-168.20 ppb
2017-02-221.50 ppb
2017-02-221.30 ppb
2017-02-231.30 ppb
2017-02-272.00 ppb
2017-03-141.90 ppb
2017-03-15ND
2018-08-212018081302571.40 ppb
2019-07-302019080101782.10 ppb