Chromium (hexavalent)

Las Vegas Valley Water District

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.0652 ppb	10	10	0.0540 ppb - 0.0850 ppb
2014	0.319 ppb	12	12	0.0660 ppb - 0.850 ppb
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/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
2013-03-06	201303080524AM	0.0630 ppb
2013-03-06	201303080526AM	0.0550 ppb
2013-06-05	201306070103AM	0.0660 ppb
2013-06-05	201306070101AM	0.0540 ppb
2013-09-16	201309190439AM	0.0790 ppb
2013-09-16	201309190437AM	0.0850 ppb
2013-12-18	201312200210AM	0.0580 ppb
2013-12-18	201312200206AM	0.0680 ppb
2013-12-18	201312200212AM	0.0540 ppb
2013-12-18	201312200208AM	0.0700 ppb
2014-03-18	201403200555AM	0.0700 ppb
2014-03-18	201403200557AM	0.0710 ppb
2014-04-23	201404250235AM	0.0660 ppb
2014-04-23	201404250231AM	0.710 ppb
2014-04-23	201404250233AM	0.780 ppb
2014-06-16	201406180435AM	0.0720 ppb
2014-06-16	201406180437AM	0.0680 ppb
2014-09-29	201410010262AM	0.0670 ppb
2014-09-29	201410010215AM	0.0750 ppb
2014-10-22	201410240229AM	0.840 ppb
2014-10-22	201410240231AM	0.850 ppb
2014-10-22	201410240233AM	0.160 ppb