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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Town of Gilbert

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

 

114

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20135.66 ppb6157ND - 17.0 ppb
20140.680 ppb52ND - 1.70 ppb
201510.3 ppb3310.00 ppb - 11.0 ppb
20168.62 ppb10104.10 ppb - 12.0 ppb
2017ND10ND
20189.79 ppb1716ND - 17.0 ppb
20198.28 ppb1714ND - 16.0 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
2013-04-22201304220123AM15.0 ppb
2013-04-22201304220125AM11.0 ppb
2013-04-22201304220108AM1.10 ppb
2013-04-22201304220121AM10.00 ppb
2013-04-22201304220119AM14.0 ppb
2013-04-22201304220110AM0.280 ppb
2013-04-22201304220127AM9.90 ppb
2013-04-22201304220129AM11.0 ppb
2013-04-23201304230211AM17.0 ppb
2013-04-23201304230215AM8.90 ppb
2013-04-23201304230219AM1.80 ppb
2013-04-23201304230217AM2.10 ppb
2013-04-23201304230228AM0.290 ppb
2013-04-23201304230221AM2.20 ppb
2013-04-23201304230223AM0.260 ppb
2013-04-23201304230225AM7.50 ppb
2013-04-23201304230213AM6.20 ppb
2013-04-24201304240157AM4.70 ppb
2013-04-24201304240161AM1.80 ppb
2013-04-24201304240165AM2.40 ppb
2013-04-24201304240167AM1.30 ppb
2013-04-24201304240169AM10.00 ppb
2013-04-24201304240159AM2.20 ppb
2013-04-25201304250480AM3.30 ppb
2013-04-25201304250478AM2.10 ppb
2013-04-25201304250476AM5.50 ppb
2013-04-25201304250474AM3.20 ppb
2013-05-09201305100052AM1.70 ppb
2013-07-25201307250327AM0.790 ppb
2013-07-25201307250329AM0.880 ppb
2013-07-25201307250333AM7.50 ppb
2013-07-25201307250331AMND
2013-10-14201310140284AM14.0 ppb
2013-10-14201310140276AM1.90 ppb
2013-10-14201310140288AM8.30 ppb
2013-10-14201310140282AM9.30 ppb
2013-10-14201310140280AM3.70 ppb
2013-10-14201310140278AMND
2013-10-14201310140290AM2.90 ppb
2013-10-14201310140292AM3.30 ppb
2013-10-14201310140294AMND
2013-10-14201310140286AM6.20 ppb
2013-10-15201310150550AM9.30 ppb
2013-10-15201310150546AM14.0 ppb
2013-10-15201310150548AM11.0 ppb
2013-10-15201310150554AM2.80 ppb
2013-10-15201310150556AMND
2013-10-15201310150552AM10.00 ppb
2013-10-16201310160451AM13.0 ppb
2013-10-16201310160455AM8.20 ppb
2013-10-16201310160457AM4.30 ppb
2013-10-16201310160453AM4.10 ppb
2013-10-22201310220322AM10.00 ppb
2013-10-22201310220320AM7.20 ppb
2013-10-22201310220326AM4.60 ppb
2013-10-22201310220328AM9.80 ppb
2013-10-22201310220324AM10.00 ppb
2013-10-23201310230754AM4.70 ppb
2013-10-23201310230758AM2.30 ppb
2013-10-23201310230760AM2.20 ppb
2013-10-23201310230756AM2.20 ppb
2014-01-09201401090391AM1.70 ppb
2014-01-09201401090389AM1.70 ppb
2014-01-21201401210282AMND
2014-01-21201401210278AMND
2014-01-27201401270086IND
2015-01-28201501280356I10.00 ppb
2015-06-15201506150309AM10.00 ppb
2015-12-13201512140112AM11.0 ppb
2016-01-12201601120223I9.30 ppb
2016-01-19201601190321I12.0 ppb
2016-01-26201601260298I8.30 ppb
2016-02-08201602080042I9.30 ppb
2016-02-08201602080053I4.10 ppb
2016-03-02201603020441I6.00 ppb
2016-03-23201603230453I7.60 ppb
2016-04-07201604070686I11.0 ppb
2016-04-19201604190185I6.60 ppb
2016-05-31201605310460I12.0 ppb
2017-01-042017010408151ND
2018-01-16201801160477 IND
2018-01-16201801160478 I13.0 ppb
2018-01-16201801160489 I7.00 ppb
2018-01-24201801240730 I7.70 ppb
2018-01-24201801240738 I8.00 ppb
2018-01-24201801240891 I14.0 ppb
2018-01-29201801290172 I12.0 ppb
2018-01-29201801290249 I10.00 ppb
2018-01-29201801290255 I12.0 ppb
2018-02-26201802260220 I13.0 ppb
2018-02-27201802270449 I9.40 ppb
2018-03-20201803200261 I12.0 ppb
2018-03-20201803200269 I9.80 ppb
2018-03-21201803210471 I4.40 ppb
2018-05-17201805170725 I16.0 ppb
2018-05-29201805290454 I1.20 ppb
2018-06-13201806131020 I17.0 ppb
2019-01-09201901090342114.0 ppb
2019-01-09201901090347113.0 ppb
2019-01-09201901090355116.0 ppb
2019-01-092019010903691ND
2019-01-09201901090374112.0 ppb
2019-01-0920190109037919.80 ppb
2019-01-09201901090384I6.20 ppb
2019-01-09201901090393I11.0 ppb
2019-01-09201901090396I9.50 ppb
2019-01-152019011502201ND
2019-02-06201902060216111.0 ppb
2019-02-0620190206022719.90 ppb
2019-02-0620190206023016.00 ppb
2019-03-25201903250182110.00 ppb
2019-03-25201903250230I3.90 ppb
2019-04-162019041604191ND
2019-04-2920190429029618.40 ppb