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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Town of Gilbert

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).

 

68

Samples

0

Samples exceeding legal limit (MCL)

63

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20136.01 ppb6258ND - 17.0 ppb
20140.938 ppb43ND - 1.90 ppb
201511.5 ppb2211.0 ppb - 12.0 ppb
2016N/A00N/A
2017N/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
2013-04-22201304220123AM16.0 ppb
2013-04-22201304220125AM13.0 ppb
2013-04-22201304220129AM12.0 ppb
2013-04-22201304220110AM0.0310 ppb
2013-04-22201304220108AM0.840 ppb
2013-04-22201304220119AM15.0 ppb
2013-04-22201304220121AM10.00 ppb
2013-04-22201304220127AM11.0 ppb
2013-04-23201304230213AM5.80 ppb
2013-04-23201304230228AM0.0660 ppb
2013-04-23201304230217AM1.80 ppb
2013-04-23201304230223AM0.0340 ppb
2013-04-23201304230219AM1.40 ppb
2013-04-23201304230225AM7.30 ppb
2013-04-23201304230221AM1.90 ppb
2013-04-23201304230215AM8.10 ppb
2013-04-23201304230211AM17.0 ppb
2013-04-24201304240157AM4.00 ppb
2013-04-24201304240155AM9.00 ppb
2013-04-24201304240167AM0.960 ppb
2013-04-24201304240159AM1.70 ppb
2013-04-24201304240169AM11.0 ppb
2013-04-24201304240165AM2.40 ppb
2013-04-24201304240161AM1.40 ppb
2013-04-24201304240163AM5.00 ppb
2013-04-25201304250474AM2.60 ppb
2013-04-25201304250478AM1.60 ppb
2013-04-25201304250480AM2.80 ppb
2013-04-25201304250476AM5.00 ppb
2013-07-25201307250333AM8.20 ppb
2013-07-25201307250331AMND
2013-07-25201307250327AM0.550 ppb
2013-07-25201307250329AM0.640 ppb
2013-10-14201310140278AMND
2013-10-14201310140294AMND
2013-10-14201310140292AM3.50 ppb
2013-10-14201310140286AM6.80 ppb
2013-10-14201310140290AM3.00 ppb
2013-10-14201310140284AM15.0 ppb
2013-10-14201310140280AM4.00 ppb
2013-10-14201310140282AM10.00 ppb
2013-10-14201310140288AM9.00 ppb
2013-10-14201310140276AM2.00 ppb
2013-10-15201310150550AM10.00 ppb
2013-10-15201310150548AM12.0 ppb
2013-10-15201310150546AM16.0 ppb
2013-10-15201310150552AM11.0 ppb
2013-10-15201310150556AMND
2013-10-15201310150554AM3.10 ppb
2013-10-16201310160453AM4.20 ppb
2013-10-16201310160451AM15.0 ppb
2013-10-16201310160457AM4.20 ppb
2013-10-16201310160455AM8.40 ppb
2013-10-22201310220328AM11.0 ppb
2013-10-22201310220326AM5.50 ppb
2013-10-22201310220322AM11.0 ppb
2013-10-22201310220320AM8.20 ppb
2013-10-22201310220324AM11.0 ppb
2013-10-23201310230758AM2.40 ppb
2013-10-23201310230754AM3.70 ppb
2013-10-23201310230760AM2.30 ppb
2013-10-23201310230756AM2.40 ppb
2014-01-09201401090391AM1.80 ppb
2014-01-09201401090389AM1.90 ppb
2014-01-21201401210278AMND
2014-01-21201401210282AM0.0500 ppb
2015-06-15201506150309AM12.0 ppb
2015-12-13201512140112AM11.0 ppb